diff --git a/include/common/tep.h b/include/common/tep.h
index 56a4f7a2f0162323c7b26bf215179e0bd7361bab..602df8ca53c7eab4e7881598286b27a934a675dc 100644
--- a/include/common/tep.h
+++ b/include/common/tep.h
@@ -79,9 +79,12 @@ static FORCE_INLINE bool colDataIsNull(const SColumnInfoData* pColumnInfoData, u
   }
 }
 
-#define colDataGetData(p1_, r_)                                                      \
-  ((IS_VAR_DATA_TYPE((p1_)->info.type)) ? (p1_)->pData + (p1_)->varmeta.offset[(r_)] \
-                                        : (p1_)->pData + ((r_) * (p1_)->info.bytes))
+#define BitmapLen(_n)     (((_n) + ((1<<NBIT)-1)) >> NBIT)
+
+
+#define colDataGetData(p1_, r_)                                                          \
+  ((IS_VAR_DATA_TYPE((p1_)->info.type)) ? ((p1_)->pData + (p1_)->varmeta.offset[(r_)]) \
+                                        : ((p1_)->pData + ((r_) * (p1_)->info.bytes)))
 
 int32_t colDataAppend(SColumnInfoData* pColumnInfoData, uint32_t currentRow, const char* pData, bool isNull);
 int32_t colDataMergeCol(SColumnInfoData* pColumnInfoData, uint32_t numOfRow1, const SColumnInfoData* pSource,
@@ -112,6 +115,7 @@ SSchema* blockDataExtractSchema(const SSDataBlock* pBlock, int32_t* numOfCols);
 int32_t blockDataSort(SSDataBlock* pDataBlock, SArray* pOrderInfo, bool nullFirst);
 int32_t blockDataSort_rv(SSDataBlock* pDataBlock, SArray* pOrderInfo, bool nullFirst);
 
+int32_t      blockDataEnsureColumnCapacity(SColumnInfoData* pColumn, uint32_t numOfRows);
 int32_t      blockDataEnsureCapacity(SSDataBlock* pDataBlock, uint32_t numOfRows);
 void         blockDataClearup(SSDataBlock* pDataBlock, bool hasVarCol);
 SSDataBlock* createOneDataBlock(const SSDataBlock* pDataBlock);
diff --git a/include/common/tmsgdef.h b/include/common/tmsgdef.h
index 5117e784be122128b4bcd14869b77550cfa080ac..cae186ba16ed7af71d888eee367f13b067b712d5 100644
--- a/include/common/tmsgdef.h
+++ b/include/common/tmsgdef.h
@@ -127,7 +127,7 @@ enum {
   TD_DEF_MSG_TYPE(TDMT_MND_CREATE_STB, "mnode-create-stb", NULL, NULL)
   TD_DEF_MSG_TYPE(TDMT_MND_ALTER_STB, "mnode-alter-stb", NULL, NULL)
   TD_DEF_MSG_TYPE(TDMT_MND_DROP_STB, "mnode-drop-stb", NULL, NULL)
-  TD_DEF_MSG_TYPE(TDMT_MND_STB_META, "mnode-stb-meta", NULL, NULL)
+  TD_DEF_MSG_TYPE(TDMT_MND_TABLE_META, "mnode-table-meta", NULL, NULL)
   TD_DEF_MSG_TYPE(TDMT_MND_VGROUP_LIST, "mnode-vgroup-list", NULL, NULL)
   TD_DEF_MSG_TYPE(TDMT_MND_KILL_QUERY, "mnode-kill-query", NULL, NULL)
   TD_DEF_MSG_TYPE(TDMT_MND_KILL_CONN, "mnode-kill-conn", NULL, NULL)
diff --git a/include/libs/function/function.h b/include/libs/function/function.h
index e890a9f0e12f789bafe1b95a270fcecbf64cfba2..62063ef99a67b961b852a3870600d4d4b850ed7b 100644
--- a/include/libs/function/function.h
+++ b/include/libs/function/function.h
@@ -229,11 +229,16 @@ typedef struct SAggFunctionInfo {
 } SAggFunctionInfo;
 
 typedef struct SScalarParam {
-  void*   data;
-  bool    colData;
-  int32_t num;
-  int32_t type;
-  int32_t bytes;
+  void            *data;
+  union {
+    SColumnInfoData *columnData;
+    void            *data;
+  } orig;  
+  char            *bitmap;
+  bool             dataInBlock;
+  int32_t          num;
+  int32_t          type;
+  int32_t          bytes;
 } SScalarParam;
 
 typedef struct SScalarFunctionInfo {
diff --git a/include/libs/scalar/scalar.h b/include/libs/scalar/scalar.h
index 1902c11cc68097b63141d640ce7a8bdf4656d713..e55c0b9e7667e934236c771d8980ace53aa57ca9 100644
--- a/include/libs/scalar/scalar.h
+++ b/include/libs/scalar/scalar.h
@@ -25,9 +25,17 @@ extern "C" {
 
 typedef struct SFilterInfo SFilterInfo;
 
-
+/*
+pNode will be freed in API;
+*pRes need to freed in caller
+*/
 int32_t scalarCalculateConstants(SNode *pNode, SNode **pRes);
-int32_t scalarCalculate(SNode *pNode, SSDataBlock *pSrc, SScalarParam *pDst);
+
+/* 
+pDst need to freed in caller 
+*/
+int32_t scalarCalculate(SNode *pNode, SArray *pBlockList, SScalarParam *pDst);
+
 int32_t scalarGetOperatorParamNum(EOperatorType type);
 int32_t scalarGenerateSetFromList(void **data, void *pNode, uint32_t type);
 
diff --git a/include/os/osFile.h b/include/os/osFile.h
index 3ff3b50550f563ad67378e1d5173b1ddb121601b..cbd5d693c5aea2d8faa000b006a6a08575932391 100644
--- a/include/os/osFile.h
+++ b/include/os/osFile.h
@@ -16,12 +16,12 @@
 #ifndef _TD_OS_FILE_H_
 #define _TD_OS_FILE_H_
 
-#include "osSocket.h"
-
 #ifdef __cplusplus
 extern "C" {
 #endif
 
+#include "osSocket.h"
+
 #ifndef ALLOW_FORBID_FUNC
     #define open OPEN_FUNC_TAOS_FORBID
     #define fopen FOPEN_FUNC_TAOS_FORBID
@@ -43,6 +43,7 @@ typedef struct TdFile *TdFilePtr;
 #define TD_FILE_TEXT      0x0020
 #define TD_FILE_AUTO_DEL  0x0040
 #define TD_FILE_EXCL      0x0080
+#define TD_FILE_STREAM    0x0100   // Only support taosFprintfFile, taosGetLineFile, taosGetLineFile, taosEOFFile
  
 int32_t taosLockFile(TdFilePtr pFile);
 int32_t taosUnLockFile(TdFilePtr pFile);
diff --git a/include/util/taoserror.h b/include/util/taoserror.h
index 2b569a491a859a348d943d126395c59a467145d6..5fe69284a235b2ff19b5a0c604da80db68152b96 100644
--- a/include/util/taoserror.h
+++ b/include/util/taoserror.h
@@ -13,13 +13,15 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef _TD_UTIL_ERROR_H_
-#define _TD_UTIL_ERROR_H_
+#ifndef _TD_UTIL_TAOS_ERROR_H_
+#define _TD_UTIL_TAOS_ERROR_H_
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
+// clang-format off
+
 #define TAOS_DEF_ERROR_CODE(mod, code) ((int32_t)((0x80000000 | ((mod)<<16) | (code))))
  
 #define TAOS_SYSTEM_ERROR(code)             (0x80ff0000 | (code))
@@ -233,6 +235,9 @@ int32_t* taosGetErrno();
 #define TSDB_CODE_MND_COLUMN_ALREADY_EXIST      TAOS_DEF_ERROR_CODE(0, 0x03AD)
 #define TSDB_CODE_MND_COLUMN_NOT_EXIST          TAOS_DEF_ERROR_CODE(0, 0x03AE)
 
+// mnode-infoSchema
+#define TSDB_CODE_MND_INVALID_INFOS_TBL         TAOS_DEF_ERROR_CODE(0, 0x03B0)
+
 // mnode-func
 #define TSDB_CODE_MND_FUNC_ALREADY_EXIST        TAOS_DEF_ERROR_CODE(0, 0x03C0)
 #define TSDB_CODE_MND_FUNC_NOT_EXIST            TAOS_DEF_ERROR_CODE(0, 0x03C1)
@@ -263,6 +268,8 @@ int32_t* taosGetErrno();
 #define TSDB_CODE_MND_OFFSET_NOT_EXIST          TAOS_DEF_ERROR_CODE(0, 0x03EA)
 #define TSDB_CODE_MND_MQ_PLACEHOLDER            TAOS_DEF_ERROR_CODE(0, 0x03F0)
 
+
+
 // dnode
 #define TSDB_CODE_DND_ACTION_IN_PROGRESS        TAOS_DEF_ERROR_CODE(0, 0x0400)
 #define TSDB_CODE_DND_OFFLINE                   TAOS_DEF_ERROR_CODE(0, 0x0401)
@@ -467,4 +474,4 @@ int32_t* taosGetErrno();
 }
 #endif
 
-#endif /*_TD_UTIL_ERROR_H_*/
+#endif /*_TD_UTIL_TAOS_ERROR_H_*/
diff --git a/include/util/tdef.h b/include/util/tdef.h
index 1a5c07d75aec3a8c48e617f9ceb17b8da749f116..a1b4fc11cf00eaf9615b41a50811b4574e759277 100644
--- a/include/util/tdef.h
+++ b/include/util/tdef.h
@@ -94,6 +94,21 @@ extern const int32_t TYPE_BYTES[15];
 #define TSDB_TIME_PRECISION_MICRO_STR "us"
 #define TSDB_TIME_PRECISION_NANO_STR  "ns"
 
+#define TSDB_INFORMATION_SCHEMA_DB            "information_schema"
+#define TSDB_INS_TABLE_DNODES                 "dnodes"
+#define TSDB_INS_TABLE_MNODES                 "mnodes"
+#define TSDB_INS_TABLE_MODULES                "modules"
+#define TSDB_INS_TABLE_QNODES                 "qnodes"
+#define TSDB_INS_TABLE_USER_DATABASE          "user_database"
+#define TSDB_INS_TABLE_USER_FUNCTIONS         "user_functions"
+#define TSDB_INS_TABLE_USER_INDEXES           "user_indexes"
+#define TSDB_INS_TABLE_USER_STABLES           "user_stables"
+#define TSDB_INS_TABLE_USER_STREAMS           "user_streams"
+#define TSDB_INS_TABLE_USER_TABLES            "user_tables"
+#define TSDB_INS_TABLE_USER_TABLE_DISTRIBUTED "user_table_distributed"
+#define TSDB_INS_TABLE_USER_USERS             "user_users"
+#define TSDB_INS_TABLE_VGROUPS                "vgroups"
+
 #define TSDB_TICK_PER_SECOND(precision)                      \
   ((int64_t)((precision) == TSDB_TIME_PRECISION_MILLI ? 1e3L \
                                                       : ((precision) == TSDB_TIME_PRECISION_MICRO ? 1e6L : 1e9L)))
diff --git a/source/client/src/clientImpl.c b/source/client/src/clientImpl.c
index f256feb2510b0a2c08b63afd7477dc9083208662..3c6a49c3db25cbcc4a7b5f76d6081728a5a6f129 100644
--- a/source/client/src/clientImpl.c
+++ b/source/client/src/clientImpl.c
@@ -226,23 +226,27 @@ void setResSchemaInfo(SReqResultInfo* pResInfo, const SSchema* pSchema, int32_t
 
 int32_t scheduleQuery(SRequestObj* pRequest, SQueryDag* pDag, SArray* pNodeList) {
   void* pTransporter = pRequest->pTscObj->pAppInfo->pTransporter;
-  if (TSDB_SQL_INSERT == pRequest->type || TSDB_SQL_CREATE_TABLE == pRequest->type) {
-    SQueryResult res = {.code = 0, .numOfRows = 0, .msgSize = ERROR_MSG_BUF_DEFAULT_SIZE, .msg = pRequest->msgBuf};
-    int32_t      code = schedulerExecJob(pTransporter, NULL, pDag, &pRequest->body.pQueryJob, pRequest->sqlstr, &res);
-    if (code != TSDB_CODE_SUCCESS) {
-      // handle error and retry
-    } else {
-      if (pRequest->body.pQueryJob != NULL) {
-        schedulerFreeJob(pRequest->body.pQueryJob);
-      }
+  SQueryResult res = {.code = 0, .numOfRows = 0, .msgSize = ERROR_MSG_BUF_DEFAULT_SIZE, .msg = pRequest->msgBuf};
+  int32_t      code = schedulerExecJob(pTransporter, pNodeList, pDag, &pRequest->body.pQueryJob, pRequest->sqlstr, &res);
+  if (code != TSDB_CODE_SUCCESS) {
+    if (pRequest->body.pQueryJob != NULL) {
+      schedulerFreeJob(pRequest->body.pQueryJob);
     }
 
-    pRequest->body.resInfo.numOfRows = res.numOfRows;
-    pRequest->code = res.code;
+    pRequest->code = code;
     return pRequest->code;
   }
 
-  return schedulerAsyncExecJob(pTransporter, pNodeList, pDag, pRequest->sqlstr, &pRequest->body.pQueryJob);
+  if (TSDB_SQL_INSERT == pRequest->type || TSDB_SQL_CREATE_TABLE == pRequest->type) {
+    pRequest->body.resInfo.numOfRows = res.numOfRows;
+    
+    if (pRequest->body.pQueryJob != NULL) {
+      schedulerFreeJob(pRequest->body.pQueryJob);
+    }
+  }
+  
+  pRequest->code = res.code;
+  return pRequest->code;
 }
 
 TAOS_RES* taos_query_l(TAOS* taos, const char* sql, int sqlLen) {
diff --git a/source/client/test/clientTests.cpp b/source/client/test/clientTests.cpp
index 276c19538c26f406051d08ba5bf3e7e9176c0e4d..7bba0935882bcac5b784dee40a6b4b8f24bc6ae9 100644
--- a/source/client/test/clientTests.cpp
+++ b/source/client/test/clientTests.cpp
@@ -334,7 +334,7 @@ TEST(testCase, create_ctable_Test) {
   }
   taos_free_result(pRes);
 
-  pRes = taos_query(pConn, "create table tm0 using st1 tags(1)");
+  pRes = taos_query(pConn, "create table tu using sts tags('2021-10-10 1:1:1');");
   if (taos_errno(pRes) != 0) {
     printf("failed to create child table tm0, reason:%s\n", taos_errstr(pRes));
   }
diff --git a/source/common/src/tep.c b/source/common/src/tep.c
index 05d30579b12632cd5cfb4189af35440a3ee373ce..e2880441be2585634a80c1c09d853a8830c73b35 100644
--- a/source/common/src/tep.c
+++ b/source/common/src/tep.c
@@ -75,7 +75,6 @@ SEpSet getEpSet_s(SCorEpSet *pEpSet) {
   return ep;
 }
 
-#define BitmapLen(_n)     (((_n) + ((1<<NBIT)-1)) >> NBIT)
 
 int32_t colDataGetLength(const SColumnInfoData* pColumnInfoData, int32_t numOfRows) {
   ASSERT(pColumnInfoData != NULL);
@@ -135,6 +134,7 @@ int32_t colDataAppend(SColumnInfoData* pColumnInfoData, uint32_t currentRow, con
   } else {
     char* p = pColumnInfoData->pData + pColumnInfoData->info.bytes * currentRow;
     switch(type) {
+      case TSDB_DATA_TYPE_BOOL: {*(bool*) p = *(bool*) pData;break;}
       case TSDB_DATA_TYPE_TINYINT:
       case TSDB_DATA_TYPE_UTINYINT: {*(int8_t*) p = *(int8_t*) pData;break;}
       case TSDB_DATA_TYPE_SMALLINT:
@@ -144,6 +144,8 @@ int32_t colDataAppend(SColumnInfoData* pColumnInfoData, uint32_t currentRow, con
       case TSDB_DATA_TYPE_TIMESTAMP:
       case TSDB_DATA_TYPE_BIGINT:
       case TSDB_DATA_TYPE_UBIGINT: {*(int64_t*) p = *(int64_t*) pData;break;}
+      case TSDB_DATA_TYPE_FLOAT: {*(float*) p = *(float*) pData;break;}
+      case TSDB_DATA_TYPE_DOUBLE: {*(double*) p = *(double*) pData;break;}
       default:
         assert(0);
     }
@@ -1071,36 +1073,47 @@ void blockDataClearup(SSDataBlock* pDataBlock, bool hasVarCol) {
   }
 }
 
-int32_t blockDataEnsureCapacity(SSDataBlock* pDataBlock, uint32_t numOfRows) {
-  for(int32_t i = 0; i < pDataBlock->info.numOfCols; ++i) {
-    SColumnInfoData* p = taosArrayGet(pDataBlock->pDataBlock, i);
-    if (IS_VAR_DATA_TYPE(p->info.type)) {
-      char* tmp = realloc(p->varmeta.offset, sizeof(int32_t) * numOfRows);
-      if (tmp == NULL) {
-        return TSDB_CODE_OUT_OF_MEMORY;
-      }
+int32_t blockDataEnsureColumnCapacity(SColumnInfoData* pColumn, uint32_t numOfRows) {
+  if (IS_VAR_DATA_TYPE(pColumn->info.type)) {
+    char* tmp = realloc(pColumn->varmeta.offset, sizeof(int32_t) * numOfRows);
+    if (tmp == NULL) {
+      return TSDB_CODE_OUT_OF_MEMORY;
+    }
 
-      p->varmeta.offset = (int32_t*)tmp;
-      memset(p->varmeta.offset, 0, sizeof(int32_t) * numOfRows);
+    pColumn->varmeta.offset = (int32_t*)tmp;
+    memset(pColumn->varmeta.offset, 0, sizeof(int32_t) * numOfRows);
 
-      p->varmeta.length = 0;
-      p->varmeta.allocLen = 0;
-      tfree(p->pData);
-    } else {
-      char* tmp = realloc(p->nullbitmap, BitmapLen(numOfRows));
-      if (tmp == NULL) {
-        return TSDB_CODE_OUT_OF_MEMORY;
-      }
+    pColumn->varmeta.length = 0;
+    pColumn->varmeta.allocLen = 0;
+    tfree(pColumn->pData);
+  } else {
+    char* tmp = realloc(pColumn->nullbitmap, BitmapLen(numOfRows));
+    if (tmp == NULL) {
+      return TSDB_CODE_OUT_OF_MEMORY;
+    }
 
-      p->nullbitmap = tmp;
-      memset(p->nullbitmap, 0, BitmapLen(numOfRows));
+    pColumn->nullbitmap = tmp;
+    memset(pColumn->nullbitmap, 0, BitmapLen(numOfRows));
 
-      tmp = realloc(p->pData, numOfRows * p->info.bytes);
-      if (tmp == NULL) {
-        return TSDB_CODE_OUT_OF_MEMORY;
-      }
+    tmp = realloc(pColumn->pData, numOfRows * pColumn->info.bytes);
+    if (tmp == NULL) {
+      return TSDB_CODE_OUT_OF_MEMORY;
+    }
 
-      p->pData = tmp;
+    pColumn->pData = tmp;
+  }
+
+  return TSDB_CODE_SUCCESS;
+}
+
+int32_t blockDataEnsureCapacity(SSDataBlock* pDataBlock, uint32_t numOfRows) {
+  int32_t code = 0;
+  
+  for(int32_t i = 0; i < pDataBlock->info.numOfCols; ++i) {
+    SColumnInfoData* p = taosArrayGet(pDataBlock->pDataBlock, i);
+    code = blockDataEnsureColumnCapacity(p, numOfRows);
+    if (code) {
+      return code;
     }
   }
 
@@ -1149,4 +1162,4 @@ SSDataBlock* createOneDataBlock(const SSDataBlock* pDataBlock) {
 
 size_t blockDataGetCapacityInRow(const SSDataBlock* pBlock, size_t pageSize) {
   return pageSize / (blockDataGetSerialRowSize(pBlock) + blockDataGetSerialMetaSize(pBlock));
-}
\ No newline at end of file
+}
diff --git a/source/common/src/tmsg.c b/source/common/src/tmsg.c
index 2f174b44e6833848e6ec540ffec4eaeba97124ac..8a3cd0a7183b935da6d81f6f6651c954942f4a3f 100644
--- a/source/common/src/tmsg.c
+++ b/source/common/src/tmsg.c
@@ -1524,6 +1524,10 @@ int32_t tDeserializeSUseDbRspImp(SCoder *pDecoder, SUseDbRsp *pRsp) {
   if (tDecodeI32(pDecoder, &pRsp->vgNum) < 0) return -1;
   if (tDecodeI8(pDecoder, &pRsp->hashMethod) < 0) return -1;
 
+  if (pRsp->vgNum <= 0) {
+    return 0;
+  }
+  
   pRsp->pVgroupInfos = taosArrayInit(pRsp->vgNum, sizeof(SVgroupInfo));
   if (pRsp->pVgroupInfos == NULL) {
     terrno = TSDB_CODE_OUT_OF_MEMORY;
diff --git a/source/common/src/ttszip.c b/source/common/src/ttszip.c
index a34895d264b8261a656cac7d87bee128ed27ce24..f20e91168162757f98529de72f5e293843df0c3c 100644
--- a/source/common/src/ttszip.c
+++ b/source/common/src/ttszip.c
@@ -1090,14 +1090,14 @@ int32_t dumpFileBlockByGroupId(STSBuf* pTSBuf, int32_t groupIndex, void* buf, in
   *numOfBlocks = 0;
 
   if (taosLSeekFile(pTSBuf->pFile, pBlockInfo->offset, SEEK_SET) != 0) {
-    int32_t code = TAOS_SYSTEM_ERROR(taosEOFFile(pTSBuf->pFile));
+    int32_t code = TAOS_SYSTEM_ERROR(taosGetErrorFile(pTSBuf->pFile));
     //    qError("%p: fseek failed: %s", pSql, tstrerror(code));
     return code;
   }
 
   size_t s = taosReadFile(pTSBuf->pFile, buf, pBlockInfo->compLen);
   if (s != pBlockInfo->compLen) {
-    int32_t code = TAOS_SYSTEM_ERROR(taosEOFFile(pTSBuf->pFile));
+    int32_t code = TAOS_SYSTEM_ERROR(taosGetErrorFile(pTSBuf->pFile));
     //    tscError("%p: fread didn't return expected data: %s", pSql, tstrerror(code));
     return code;
   }
diff --git a/source/dnode/mgmt/impl/src/dndTransport.c b/source/dnode/mgmt/impl/src/dndTransport.c
index 8c64cc16c34f6ed0fbf573d5b2e36787f5070be9..dfa2b747556989bf7cde63bc038e7c1d97444e84 100644
--- a/source/dnode/mgmt/impl/src/dndTransport.c
+++ b/source/dnode/mgmt/impl/src/dndTransport.c
@@ -95,7 +95,7 @@ static void dndInitMsgFp(STransMgmt *pMgmt) {
   pMgmt->msgFp[TMSG_INDEX(TDMT_MND_CREATE_STB)] = dndProcessMnodeWriteMsg;
   pMgmt->msgFp[TMSG_INDEX(TDMT_MND_ALTER_STB)] = dndProcessMnodeWriteMsg;
   pMgmt->msgFp[TMSG_INDEX(TDMT_MND_DROP_STB)] = dndProcessMnodeWriteMsg;
-  pMgmt->msgFp[TMSG_INDEX(TDMT_MND_STB_META)] = dndProcessMnodeReadMsg;
+  pMgmt->msgFp[TMSG_INDEX(TDMT_MND_TABLE_META)] = dndProcessMnodeReadMsg;
   pMgmt->msgFp[TMSG_INDEX(TDMT_MND_VGROUP_LIST)] = dndProcessMnodeReadMsg;
   pMgmt->msgFp[TMSG_INDEX(TDMT_MND_KILL_QUERY)] = dndProcessMnodeWriteMsg;
   pMgmt->msgFp[TMSG_INDEX(TDMT_MND_KILL_CONN)] = dndProcessMnodeWriteMsg;
diff --git a/source/dnode/mnode/impl/inc/mndInfoSchema.h b/source/dnode/mnode/impl/inc/mndInfoSchema.h
new file mode 100644
index 0000000000000000000000000000000000000000..7db41254027c3c2924e094ae806bbcc8907f0981
--- /dev/null
+++ b/source/dnode/mnode/impl/inc/mndInfoSchema.h
@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
+ *
+ * This program is free software: you can use, redistribute, and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3
+ * or later ("AGPL"), as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _TD_MND_INFO_SCHEMA_H_
+#define _TD_MND_INFO_SCHEMA_H_
+
+#include "mndInt.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct SInfosTableSchema {
+  char   *name;
+  int32_t type;
+  int32_t bytes;
+} SInfosTableSchema;
+
+typedef struct SInfosTableMeta {
+  char                    *name;
+  const SInfosTableSchema *schema;
+  int32_t                  colNum;
+} SInfosTableMeta;
+
+int32_t mndBuildInsTableSchema(SMnode *pMnode, const char *dbFName, const char *tbName, STableMetaRsp *pRsp);
+int32_t mndInitInfos(SMnode *pMnode);
+void mndCleanupInfos(SMnode *pMnode);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /*_TD_MND_INFO_SCHEMA_H_*/
diff --git a/source/dnode/mnode/impl/inc/mndInt.h b/source/dnode/mnode/impl/inc/mndInt.h
index e65535206d6cc1e23ae86d070b39d9c53336da41..54595fb10533bdd3942688a450a17b0eacf6b6b2 100644
--- a/source/dnode/mnode/impl/inc/mndInt.h
+++ b/source/dnode/mnode/impl/inc/mndInt.h
@@ -90,6 +90,7 @@ typedef struct SMnode {
   SProfileMgmt      profileMgmt;
   STelemMgmt        telemMgmt;
   SSyncMgmt         syncMgmt;
+  SHashObj         *infosMeta;
   MndMsgFp          msgFp[TDMT_MAX];
   SendReqToDnodeFp  sendReqToDnodeFp;
   SendReqToMnodeFp  sendReqToMnodeFp;
diff --git a/source/dnode/mnode/impl/src/mndDb.c b/source/dnode/mnode/impl/src/mndDb.c
index 9c8a4ce586fc81db61759df6819435f1c9911680..9165fa2264725253f9a1082f47ae26ae27a0f7d4 100644
--- a/source/dnode/mnode/impl/src/mndDb.c
+++ b/source/dnode/mnode/impl/src/mndDb.c
@@ -937,36 +937,41 @@ static int32_t mndProcessUseDbReq(SMnodeMsg *pReq) {
     goto USE_DB_OVER;
   }
 
-  pDb = mndAcquireDb(pMnode, usedbReq.db);
-  if (pDb == NULL) {
-    terrno = TSDB_CODE_MND_DB_NOT_EXIST;
-    goto USE_DB_OVER;
-  }
+  char *p = strchr(usedbReq.db, '.');
+  if (p && 0 == strcmp(p + 1, TSDB_INFORMATION_SCHEMA_DB)) {
+    memcpy(usedbRsp.db, usedbReq.db, TSDB_DB_FNAME_LEN);
+  } else {
+    pDb = mndAcquireDb(pMnode, usedbReq.db);
+    if (pDb == NULL) {
+      terrno = TSDB_CODE_MND_DB_NOT_EXIST;
+      goto USE_DB_OVER;
+    }
 
-  pUser = mndAcquireUser(pMnode, pReq->user);
-  if (pUser == NULL) {
-    goto USE_DB_OVER;
-  }
+    pUser = mndAcquireUser(pMnode, pReq->user);
+    if (pUser == NULL) {
+      goto USE_DB_OVER;
+    }
 
-  if (mndCheckUseDbAuth(pUser, pDb) != 0) {
-    goto USE_DB_OVER;
-  }
+    if (mndCheckUseDbAuth(pUser, pDb) != 0) {
+      goto USE_DB_OVER;
+    }
 
-  usedbRsp.pVgroupInfos = taosArrayInit(pDb->cfg.numOfVgroups, sizeof(SVgroupInfo));
-  if (usedbRsp.pVgroupInfos == NULL) {
-    terrno = TSDB_CODE_OUT_OF_MEMORY;
-    goto USE_DB_OVER;
-  }
+    usedbRsp.pVgroupInfos = taosArrayInit(pDb->cfg.numOfVgroups, sizeof(SVgroupInfo));
+    if (usedbRsp.pVgroupInfos == NULL) {
+      terrno = TSDB_CODE_OUT_OF_MEMORY;
+      goto USE_DB_OVER;
+    }
 
-  if (usedbReq.vgVersion < pDb->vgVersion) {
-    mndBuildDBVgroupInfo(pDb, pMnode, usedbRsp.pVgroupInfos);
-  }
+    if (usedbReq.vgVersion < pDb->vgVersion) {
+      mndBuildDBVgroupInfo(pDb, pMnode, usedbRsp.pVgroupInfos);
+    }
 
-  memcpy(usedbRsp.db, pDb->name, TSDB_DB_FNAME_LEN);
-  usedbRsp.uid = pDb->uid;
-  usedbRsp.vgVersion = pDb->vgVersion;
-  usedbRsp.vgNum = taosArrayGetSize(usedbRsp.pVgroupInfos);
-  usedbRsp.hashMethod = pDb->hashMethod;
+    memcpy(usedbRsp.db, pDb->name, TSDB_DB_FNAME_LEN);
+    usedbRsp.uid = pDb->uid;
+    usedbRsp.vgVersion = pDb->vgVersion;
+    usedbRsp.vgNum = taosArrayGetSize(usedbRsp.pVgroupInfos);
+    usedbRsp.hashMethod = pDb->hashMethod;
+  }
 
   int32_t contLen = tSerializeSUseDbRsp(NULL, 0, &usedbRsp);
   void   *pRsp = rpcMallocCont(contLen);
diff --git a/source/dnode/mnode/impl/src/mndInfoSchema.c b/source/dnode/mnode/impl/src/mndInfoSchema.c
new file mode 100644
index 0000000000000000000000000000000000000000..2c391e93e8ba0d6d0fd9950cfd3139215a043aed
--- /dev/null
+++ b/source/dnode/mnode/impl/src/mndInfoSchema.c
@@ -0,0 +1,245 @@
+/*
+ * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
+ *
+ * This program is free software: you can use, redistribute, and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3
+ * or later ("AGPL"), as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#define _DEFAULT_SOURCE
+#include "mndInfoSchema.h"
+
+static const SInfosTableSchema dnodesSchema[] = {{.name = "id",             .bytes = 4,   .type = TSDB_DATA_TYPE_INT},
+                                                 {.name = "end_point",      .bytes = 134, .type = TSDB_DATA_TYPE_BINARY},
+                                                 {.name = "vnodes",         .bytes = 4,   .type = TSDB_DATA_TYPE_INT},
+                                                 {.name = "cores",          .bytes = 4,   .type = TSDB_DATA_TYPE_INT},
+                                                 {.name = "status",         .bytes = 10,  .type = TSDB_DATA_TYPE_BINARY},
+                                                 {.name = "role",           .bytes = 10,  .type = TSDB_DATA_TYPE_BINARY},
+                                                 {.name = "create_time",    .bytes = 8,   .type = TSDB_DATA_TYPE_TIMESTAMP},
+                                                 {.name = "offline_reason", .bytes = 256, .type = TSDB_DATA_TYPE_BINARY},
+                                                };
+static const SInfosTableSchema mnodesSchema[] = {{.name = "id",             .bytes = 4,   .type = TSDB_DATA_TYPE_INT},
+                                                 {.name = "end_point",      .bytes = 134, .type = TSDB_DATA_TYPE_BINARY},
+                                                 {.name = "role",           .bytes = 10,  .type = TSDB_DATA_TYPE_BINARY},
+                                                 {.name = "role_time",      .bytes = 8,   .type = TSDB_DATA_TYPE_TIMESTAMP},
+                                                 {.name = "create_time",    .bytes = 8,   .type = TSDB_DATA_TYPE_TIMESTAMP},
+                                                };
+static const SInfosTableSchema modulesSchema[] = {{.name = "id",             .bytes = 4,   .type = TSDB_DATA_TYPE_INT},
+                                                 {.name = "end_point",       .bytes = 134, .type = TSDB_DATA_TYPE_BINARY},
+                                                 {.name = "module",          .bytes = 10,  .type = TSDB_DATA_TYPE_BINARY},
+                                                };
+static const SInfosTableSchema qnodesSchema[] = {{.name = "id",             .bytes = 4,   .type = TSDB_DATA_TYPE_INT},
+                                                 {.name = "end_point",      .bytes = 134, .type = TSDB_DATA_TYPE_BINARY},
+                                                 {.name = "create_time",    .bytes = 8,   .type = TSDB_DATA_TYPE_TIMESTAMP},
+                                                };
+static const SInfosTableSchema userDBSchema[] = {{.name = "name",             .bytes = 32,   .type = TSDB_DATA_TYPE_BINARY},
+                                                 {.name = "created_time",     .bytes = 8,    .type = TSDB_DATA_TYPE_TIMESTAMP},
+                                                 {.name = "ntables",          .bytes = 4,    .type = TSDB_DATA_TYPE_INT},
+                                                 {.name = "vgroups",          .bytes = 4,    .type = TSDB_DATA_TYPE_INT},
+                                                 {.name = "replica",          .bytes = 4,    .type = TSDB_DATA_TYPE_INT},
+                                                 {.name = "quorum",           .bytes = 4,    .type = TSDB_DATA_TYPE_INT},
+                                                 {.name = "days",             .bytes = 4,    .type = TSDB_DATA_TYPE_INT},
+                                                 {.name = "keep",             .bytes = 4,    .type = TSDB_DATA_TYPE_INT},
+                                                 {.name = "cache",            .bytes = 4,    .type = TSDB_DATA_TYPE_INT},
+                                                 {.name = "blocks",           .bytes = 4,    .type = TSDB_DATA_TYPE_INT},
+                                                 {.name = "minrows",          .bytes = 4,    .type = TSDB_DATA_TYPE_INT},
+                                                 {.name = "maxrows",          .bytes = 4,    .type = TSDB_DATA_TYPE_INT},
+                                                 {.name = "wallevel",         .bytes = 4,    .type = TSDB_DATA_TYPE_INT},
+                                                 {.name = "fsync",            .bytes = 4,    .type = TSDB_DATA_TYPE_INT},
+                                                 {.name = "comp",             .bytes = 4,    .type = TSDB_DATA_TYPE_INT},
+                                                 {.name = "cachelast",        .bytes = 4,    .type = TSDB_DATA_TYPE_INT},
+                                                 {.name = "precision",        .bytes = 2,    .type = TSDB_DATA_TYPE_BINARY},
+                                                 {.name = "status",           .bytes = 10,   .type = TSDB_DATA_TYPE_BINARY},
+                                                };
+static const SInfosTableSchema userFuncSchema[] = {{.name = "name",           .bytes = 32,   .type = TSDB_DATA_TYPE_BINARY},
+                                                   {.name = "created_time",   .bytes = 8,    .type = TSDB_DATA_TYPE_TIMESTAMP},
+                                                   {.name = "ntables",        .bytes = 4,    .type = TSDB_DATA_TYPE_INT},
+                                                   {.name = "precision",      .bytes = 2,    .type = TSDB_DATA_TYPE_BINARY},
+                                                   {.name = "status",         .bytes = 10,   .type = TSDB_DATA_TYPE_BINARY},
+                                                  };
+static const SInfosTableSchema userIdxSchema[] = {{.name = "table_database",   .bytes = 32,   .type = TSDB_DATA_TYPE_BINARY},
+                                                  {.name = "table_name",       .bytes = 192,  .type = TSDB_DATA_TYPE_BINARY},
+                                                  {.name = "index_database",   .bytes = 32,   .type = TSDB_DATA_TYPE_BINARY},
+                                                  {.name = "index_name",       .bytes = 192,  .type = TSDB_DATA_TYPE_BINARY},
+                                                  {.name = "column_name",      .bytes = 64,   .type = TSDB_DATA_TYPE_BINARY},
+                                                  {.name = "index_type",       .bytes = 10,   .type = TSDB_DATA_TYPE_BINARY},
+                                                  {.name = "index_extensions", .bytes = 256,  .type = TSDB_DATA_TYPE_BINARY},
+                                                 };
+static const SInfosTableSchema userStbsSchema[] = {{.name = "db_name",         .bytes = 32,   .type = TSDB_DATA_TYPE_BINARY},
+                                                   {.name = "stable_name",     .bytes = 192,  .type = TSDB_DATA_TYPE_BINARY},
+                                                   {.name = "created_time",    .bytes = 8,    .type = TSDB_DATA_TYPE_TIMESTAMP},
+                                                   {.name = "columns",         .bytes = 4,    .type = TSDB_DATA_TYPE_INT},
+                                                   {.name = "tags",            .bytes = 4,    .type = TSDB_DATA_TYPE_INT},
+                                                   {.name = "tables",          .bytes = 4,    .type = TSDB_DATA_TYPE_INT},
+                                                  };
+static const SInfosTableSchema userStreamsSchema[] = {{.name = "stream_name",  .bytes = 192,  .type = TSDB_DATA_TYPE_BINARY},
+                                                      {.name = "user_name",    .bytes = 23,   .type = TSDB_DATA_TYPE_BINARY},
+                                                      {.name = "dest_table",   .bytes = 192,  .type = TSDB_DATA_TYPE_BINARY},
+                                                      {.name = "created_time", .bytes = 8,    .type = TSDB_DATA_TYPE_TIMESTAMP},
+                                                      {.name = "sql",          .bytes = 1024, .type = TSDB_DATA_TYPE_BINARY},
+                                                     };
+static const SInfosTableSchema userTblsSchema[] = {{.name = "db_name",         .bytes = 32,   .type = TSDB_DATA_TYPE_BINARY},
+                                                   {.name = "table_name",      .bytes = 192,  .type = TSDB_DATA_TYPE_BINARY},
+                                                   {.name = "created_time",    .bytes = 8,    .type = TSDB_DATA_TYPE_TIMESTAMP},
+                                                   {.name = "columns",         .bytes = 4,    .type = TSDB_DATA_TYPE_INT},
+                                                   {.name = "stable_name",     .bytes = 192,  .type = TSDB_DATA_TYPE_BINARY},
+                                                   {.name = "tid",             .bytes = 8,    .type = TSDB_DATA_TYPE_BIGINT},
+                                                   {.name = "vg_id",           .bytes = 4,    .type = TSDB_DATA_TYPE_INT},
+                                                  };
+static const SInfosTableSchema userTblDistSchema[] = {{.name = "db_name",                .bytes = 32,   .type = TSDB_DATA_TYPE_BINARY},
+                                                      {.name = "table_name",             .bytes = 192,  .type = TSDB_DATA_TYPE_BINARY},
+                                                      {.name = "distributed_histogram",  .bytes = 500,  .type = TSDB_DATA_TYPE_BINARY},
+                                                      {.name = "min_of_rows",            .bytes = 4,    .type = TSDB_DATA_TYPE_INT},
+                                                      {.name = "max_of_rows",            .bytes = 4,    .type = TSDB_DATA_TYPE_INT},
+                                                      {.name = "avg_of_rows",            .bytes = 4,    .type = TSDB_DATA_TYPE_INT},
+                                                      {.name = "stddev_of_rows",         .bytes = 4,    .type = TSDB_DATA_TYPE_INT},
+                                                      {.name = "rows",                   .bytes = 8,    .type = TSDB_DATA_TYPE_BIGINT},
+                                                      {.name = "blocks",                 .bytes = 4,    .type = TSDB_DATA_TYPE_INT},
+                                                      {.name = "storage_size",           .bytes = 8,    .type = TSDB_DATA_TYPE_BIGINT},
+                                                      {.name = "compression_ratio",      .bytes = 8,    .type = TSDB_DATA_TYPE_DOUBLE},
+                                                      {.name = "rows_in_mem",            .bytes = 4,    .type = TSDB_DATA_TYPE_INT},
+                                                      {.name = "seek_header_time",       .bytes = 4,    .type = TSDB_DATA_TYPE_INT},
+                                                     };
+static const SInfosTableSchema userUsersSchema[] = {{.name = "user_name",      .bytes = 23,   .type = TSDB_DATA_TYPE_BINARY},
+                                                    {.name = "privilege",      .bytes = 256,  .type = TSDB_DATA_TYPE_BINARY},
+                                                    {.name = "create_time",    .bytes = 8,    .type = TSDB_DATA_TYPE_TIMESTAMP},
+                                                   };
+static const SInfosTableSchema vgroupsSchema[] = {{.name = "vg_id",            .bytes = 4,   .type = TSDB_DATA_TYPE_INT},
+                                                  {.name = "tables",           .bytes = 4,   .type = TSDB_DATA_TYPE_INT},
+                                                  {.name = "status",           .bytes = 10,  .type = TSDB_DATA_TYPE_BINARY},
+                                                  {.name = "onlines",          .bytes = 4,   .type = TSDB_DATA_TYPE_INT},
+                                                  {.name = "v1_dnode",         .bytes = 4,   .type = TSDB_DATA_TYPE_INT},
+                                                  {.name = "v1_status",        .bytes = 10,  .type = TSDB_DATA_TYPE_BINARY},
+                                                  {.name = "v2_dnode",         .bytes = 4,   .type = TSDB_DATA_TYPE_INT},
+                                                  {.name = "v2_status",        .bytes = 10,  .type = TSDB_DATA_TYPE_BINARY},
+                                                  {.name = "v3_dnode",         .bytes = 4,   .type = TSDB_DATA_TYPE_INT},
+                                                  {.name = "v3_status",        .bytes = 10,  .type = TSDB_DATA_TYPE_BINARY},
+                                                  {.name = "compacting",       .bytes = 4,   .type = TSDB_DATA_TYPE_INT},
+                                                 };
+
+static const SInfosTableMeta infosMeta[] = {{TSDB_INS_TABLE_DNODES, dnodesSchema, tListLen(dnodesSchema)},
+                                            {TSDB_INS_TABLE_MNODES, mnodesSchema, tListLen(mnodesSchema)},
+                                            {TSDB_INS_TABLE_MODULES, modulesSchema, tListLen(modulesSchema)},
+                                            {TSDB_INS_TABLE_QNODES, qnodesSchema, tListLen(qnodesSchema)},
+                                            {TSDB_INS_TABLE_USER_DATABASE, userDBSchema, tListLen(userDBSchema)},
+                                            {TSDB_INS_TABLE_USER_FUNCTIONS, userFuncSchema, tListLen(userFuncSchema)},
+                                            {TSDB_INS_TABLE_USER_INDEXES, userIdxSchema, tListLen(userIdxSchema)},
+                                            {TSDB_INS_TABLE_USER_STABLES, userStbsSchema, tListLen(userStbsSchema)},
+                                            {TSDB_INS_TABLE_USER_STREAMS, userStreamsSchema, tListLen(userStreamsSchema)},
+                                            {TSDB_INS_TABLE_USER_TABLES, userTblsSchema, tListLen(userTblsSchema)},
+                                            {TSDB_INS_TABLE_USER_TABLE_DISTRIBUTED, userTblDistSchema, tListLen(userTblDistSchema)},
+                                            {TSDB_INS_TABLE_USER_USERS, userUsersSchema, tListLen(userUsersSchema)},
+                                            {TSDB_INS_TABLE_VGROUPS, vgroupsSchema, tListLen(vgroupsSchema)},
+                                 };
+
+
+int32_t mndInitInfosTableSchema(const SInfosTableSchema *pSrc, int32_t colNum, SSchema **pDst) {
+  SSchema *schema = calloc(colNum, sizeof(SSchema));
+  if (NULL == schema) {
+    terrno = TSDB_CODE_OUT_OF_MEMORY;
+    return -1;
+  }
+
+  
+  for (int32_t i = 0; i < colNum; ++i) {
+    strcpy(schema[i].name, pSrc[i].name);
+    
+    schema[i].type = pSrc[i].type;
+    schema[i].colId = i + 1;
+    schema[i].bytes = pSrc[i].bytes;
+  }
+
+  *pDst = schema;
+
+  return TSDB_CODE_SUCCESS;
+}
+
+int32_t mndInsInitMeta(SHashObj *hash) {
+  STableMetaRsp meta = {0};
+
+  strcpy(meta.dbFName, TSDB_INFORMATION_SCHEMA_DB);
+  meta.tableType = TSDB_NORMAL_TABLE;
+  meta.sversion = 1;
+  meta.tversion = 1;
+
+  for (int32_t i = 0; i < tListLen(infosMeta); ++i) {
+    strcpy(meta.tbName, infosMeta[i].name);
+    meta.numOfColumns = infosMeta[i].colNum;
+    
+    if (mndInitInfosTableSchema(infosMeta[i].schema, infosMeta[i].colNum, &meta.pSchemas)) {
+      return -1;
+    }
+    
+    if (taosHashPut(hash, meta.tbName, strlen(meta.tbName), &meta, sizeof(meta))) {
+      terrno = TSDB_CODE_OUT_OF_MEMORY;
+      return -1;
+    }
+  }
+
+  return TSDB_CODE_SUCCESS;
+}
+
+int32_t mndBuildInsTableSchema(SMnode *pMnode, const char *dbFName, const char *tbName, STableMetaRsp *pRsp) {
+  if (NULL == pMnode->infosMeta) {
+    terrno = TSDB_CODE_MND_NOT_READY;
+    return -1;
+  }
+
+  STableMetaRsp *meta = (STableMetaRsp *)taosHashGet(pMnode->infosMeta, tbName, strlen(tbName));
+  if (NULL == meta) {
+    mError("invalid information schema table name:%s", tbName);
+    terrno = TSDB_CODE_MND_INVALID_INFOS_TBL;
+    return -1;
+  }
+
+  *pRsp = *meta;
+  
+  pRsp->pSchemas = calloc(meta->numOfColumns, sizeof(SSchema));
+  if (pRsp->pSchemas == NULL) {
+    terrno = TSDB_CODE_OUT_OF_MEMORY;
+    pRsp->pSchemas = NULL;
+    return -1;
+  }
+
+  memcpy(pRsp->pSchemas, meta->pSchemas, meta->numOfColumns * sizeof(SSchema));
+
+  return 0;
+}
+
+int32_t mndInitInfos(SMnode *pMnode) {
+  pMnode->infosMeta = taosHashInit(20, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BINARY), false, HASH_NO_LOCK);
+  if (pMnode->infosMeta == NULL) {
+    terrno = TSDB_CODE_OUT_OF_MEMORY;
+    return -1;
+  }
+
+  return mndInsInitMeta(pMnode->infosMeta);
+}
+
+void mndCleanupInfos(SMnode *pMnode) {
+  if (NULL == pMnode->infosMeta) {
+    return;
+  }
+  
+  void *pIter = taosHashIterate(pMnode->infosMeta, NULL);
+  while (pIter) {
+    STableMetaRsp *meta = (STableMetaRsp *)pIter;
+
+    tfree(meta->pSchemas);
+    
+    pIter = taosHashIterate(pMnode->infosMeta, pIter);
+  }
+
+  taosHashCleanup(pMnode->infosMeta);
+  pMnode->infosMeta = NULL;
+}
+
+
+
diff --git a/source/dnode/mnode/impl/src/mndStb.c b/source/dnode/mnode/impl/src/mndStb.c
index 274ae100455c1bbd65ff746423103cbde8d8ab63..d8091dfa760bc939d60867852d74aae459aa207a 100644
--- a/source/dnode/mnode/impl/src/mndStb.c
+++ b/source/dnode/mnode/impl/src/mndStb.c
@@ -23,6 +23,7 @@
 #include "mndTrans.h"
 #include "mndUser.h"
 #include "mndVgroup.h"
+#include "mndInfoSchema.h"
 #include "tname.h"
 
 #define TSDB_STB_VER_NUMBER 1
@@ -38,7 +39,7 @@ static int32_t  mndProcessMDropStbReq(SMnodeMsg *pReq);
 static int32_t  mndProcessVCreateStbRsp(SMnodeMsg *pRsp);
 static int32_t  mndProcessVAlterStbRsp(SMnodeMsg *pRsp);
 static int32_t  mndProcessVDropStbRsp(SMnodeMsg *pRsp);
-static int32_t  mndProcessStbMetaReq(SMnodeMsg *pReq);
+static int32_t  mndProcessTableMetaReq(SMnodeMsg *pReq);
 static int32_t  mndGetStbMeta(SMnodeMsg *pReq, SShowObj *pShow, STableMetaRsp *pMeta);
 static int32_t  mndRetrieveStb(SMnodeMsg *pReq, SShowObj *pShow, char *data, int32_t rows);
 static void     mndCancelGetNextStb(SMnode *pMnode, void *pIter);
@@ -58,7 +59,7 @@ int32_t mndInitStb(SMnode *pMnode) {
   mndSetMsgHandle(pMnode, TDMT_VND_CREATE_STB_RSP, mndProcessVCreateStbRsp);
   mndSetMsgHandle(pMnode, TDMT_VND_ALTER_STB_RSP, mndProcessVAlterStbRsp);
   mndSetMsgHandle(pMnode, TDMT_VND_DROP_STB_RSP, mndProcessVDropStbRsp);
-  mndSetMsgHandle(pMnode, TDMT_MND_STB_META, mndProcessStbMetaReq);
+  mndSetMsgHandle(pMnode, TDMT_MND_TABLE_META, mndProcessTableMetaReq);
 
   mndAddShowMetaHandle(pMnode, TSDB_MGMT_TABLE_STB, mndGetStbMeta);
   mndAddShowRetrieveHandle(pMnode, TSDB_MGMT_TABLE_STB, mndRetrieveStb);
@@ -1310,7 +1311,7 @@ static int32_t mndBuildStbSchema(SMnode *pMnode, const char *dbFName, const char
   return code;
 }
 
-static int32_t mndProcessStbMetaReq(SMnodeMsg *pReq) {
+static int32_t mndProcessTableMetaReq(SMnodeMsg *pReq) {
   SMnode       *pMnode = pReq->pMnode;
   int32_t       code = -1;
   STableInfoReq infoReq = {0};
@@ -1321,9 +1322,16 @@ static int32_t mndProcessStbMetaReq(SMnodeMsg *pReq) {
     goto RETRIEVE_META_OVER;
   }
 
-  mDebug("stb:%s.%s, start to retrieve meta", infoReq.dbFName, infoReq.tbName);
-  if (mndBuildStbSchema(pMnode, infoReq.dbFName, infoReq.tbName, &metaRsp) != 0) {
-    goto RETRIEVE_META_OVER;
+  if (0 == strcmp(infoReq.dbFName, TSDB_INFORMATION_SCHEMA_DB)) {
+    mDebug("information_schema table:%s.%s, start to retrieve meta", infoReq.dbFName, infoReq.tbName);
+    if (mndBuildInsTableSchema(pMnode, infoReq.dbFName, infoReq.tbName, &metaRsp) != 0) {
+      goto RETRIEVE_META_OVER;
+    }
+  } else {
+    mDebug("stb:%s.%s, start to retrieve meta", infoReq.dbFName, infoReq.tbName);
+    if (mndBuildStbSchema(pMnode, infoReq.dbFName, infoReq.tbName, &metaRsp) != 0) {
+      goto RETRIEVE_META_OVER;
+    }
   }
 
   int32_t rspLen = tSerializeSTableMetaRsp(NULL, 0, &metaRsp);
@@ -1553,4 +1561,4 @@ static int32_t mndRetrieveStb(SMnodeMsg *pReq, SShowObj *pShow, char *data, int3
 static void mndCancelGetNextStb(SMnode *pMnode, void *pIter) {
   SSdb *pSdb = pMnode->pSdb;
   sdbCancelFetch(pSdb, pIter);
-}
\ No newline at end of file
+}
diff --git a/source/dnode/mnode/impl/src/mndTelem.c b/source/dnode/mnode/impl/src/mndTelem.c
index 7c1215ea422d5026715d35efae90112af24e1ff9..d6a4c76c6220b8b0cc796a48497ea45141c5a4d1 100644
--- a/source/dnode/mnode/impl/src/mndTelem.c
+++ b/source/dnode/mnode/impl/src/mndTelem.c
@@ -63,7 +63,7 @@ static void mndAddCpuInfo(SMnode* pMnode, SBufferWriter* bw) {
   int32_t done = 0;
 
   // FILE* fp = fopen("/proc/cpuinfo", "r");
-  TdFilePtr pFile = taosOpenFile("/proc/cpuinfo", TD_FILE_READ);
+  TdFilePtr pFile = taosOpenFile("/proc/cpuinfo", TD_FILE_READ | TD_FILE_STREAM);
   if (pFile == NULL) {
     return;
   }
@@ -93,7 +93,7 @@ static void mndAddOsInfo(SMnode* pMnode, SBufferWriter* bw) {
   size_t size = 0;
 
   // FILE* fp = fopen("/etc/os-release", "r");
-  TdFilePtr pFile = taosOpenFile("/etc/os-release", TD_FILE_READ);
+  TdFilePtr pFile = taosOpenFile("/etc/os-release", TD_FILE_READ | TD_FILE_STREAM);
   if (pFile == NULL) {
     return;
   }
@@ -120,7 +120,7 @@ static void mndAddMemoryInfo(SMnode* pMnode, SBufferWriter* bw) {
   size_t size = 0;
 
   // FILE* fp = fopen("/proc/meminfo", "r");
-  TdFilePtr pFile = taosOpenFile("/proc/meminfo", TD_FILE_READ);
+  TdFilePtr pFile = taosOpenFile("/proc/meminfo", TD_FILE_READ | TD_FILE_STREAM);
   if (pFile == NULL) {
     return;
   }
diff --git a/source/dnode/mnode/impl/src/mnode.c b/source/dnode/mnode/impl/src/mnode.c
index 676cbfa1b3d03c2a59ce4944675fe67408dd54e0..ab5d0d794b6f0416056f418dbc83d104f7362d69 100644
--- a/source/dnode/mnode/impl/src/mnode.c
+++ b/source/dnode/mnode/impl/src/mnode.c
@@ -36,6 +36,7 @@
 #include "mndTrans.h"
 #include "mndUser.h"
 #include "mndVgroup.h"
+#include "mndInfoSchema.h"
 
 #define MQ_TIMER_MS    3000
 #define TRNAS_TIMER_MS 6000
@@ -221,6 +222,7 @@ static int32_t mndInitSteps(SMnode *pMnode) {
   if (mndAllocStep(pMnode, "mnode-offset", mndInitOffset, mndCleanupOffset) != 0) return -1;
   if (mndAllocStep(pMnode, "mnode-vgroup", mndInitVgroup, mndCleanupVgroup) != 0) return -1;
   if (mndAllocStep(pMnode, "mnode-stb", mndInitStb, mndCleanupStb) != 0) return -1;
+  if (mndAllocStep(pMnode, "mnode-infos", mndInitInfos, mndCleanupInfos) != 0) return -1;
   if (mndAllocStep(pMnode, "mnode-db", mndInitDb, mndCleanupDb) != 0) return -1;
   if (mndAllocStep(pMnode, "mnode-func", mndInitFunc, mndCleanupFunc) != 0) return -1;
   if (pMnode->clusterId <= 0) {
@@ -503,9 +505,17 @@ void mndSetMsgHandle(SMnode *pMnode, tmsg_t msgType, MndMsgFp fp) {
   }
 }
 
+
+// Note: uid 0 is reserved
 uint64_t mndGenerateUid(char *name, int32_t len) {
-  int64_t  us = taosGetTimestampUs();
   int32_t  hashval = MurmurHash3_32(name, len);
-  uint64_t x = (us & 0x000000FFFFFFFFFF) << 24;
-  return x + ((hashval & ((1ul << 16) - 1ul)) << 8) + (taosRand() & ((1ul << 8) - 1ul));
+
+  do {
+    int64_t  us = taosGetTimestampUs();
+    uint64_t x = (us & 0x000000FFFFFFFFFF) << 24;
+    uint64_t uuid = x + ((hashval & ((1ul << 16) - 1ul)) << 8) + (taosRand() & ((1ul << 8) - 1ul));
+    if (uuid) {
+      return uuid;
+    }
+  } while (true);
 }
diff --git a/source/dnode/mnode/impl/test/stb/stb.cpp b/source/dnode/mnode/impl/test/stb/stb.cpp
index c551097e720e32b5e303bd5180b8a9ad18edb130..f45c0795cd6441546a351a0e814f7a25c5d5ae95 100644
--- a/source/dnode/mnode/impl/test/stb/stb.cpp
+++ b/source/dnode/mnode/impl/test/stb/stb.cpp
@@ -339,7 +339,7 @@ TEST_F(MndTestStb, 01_Create_Show_Meta_Drop_Restart_Stb) {
     void*   pReq = rpcMallocCont(contLen);
     tSerializeSTableInfoReq(pReq, contLen, &infoReq);
 
-    SRpcMsg* pMsg = test.SendReq(TDMT_MND_STB_META, pReq, contLen);
+    SRpcMsg* pMsg = test.SendReq(TDMT_MND_TABLE_META, pReq, contLen);
     ASSERT_NE(pMsg, nullptr);
     ASSERT_EQ(pMsg->code, 0);
 
diff --git a/source/libs/catalog/inc/catalogInt.h b/source/libs/catalog/inc/catalogInt.h
index f89ac96b039a41a8539282d485c8be71608af181..e71f559ad960466264702e67b6c384d01e5f1113 100644
--- a/source/libs/catalog/inc/catalogInt.h
+++ b/source/libs/catalog/inc/catalogInt.h
@@ -189,11 +189,21 @@ typedef struct SCtgAction {
 #define CTG_IS_META_TABLE(type) ((type) == META_TYPE_TABLE)
 #define CTG_IS_META_BOTH(type) ((type) == META_TYPE_BOTH_TABLE)
 
-#define CTG_IS_STABLE(isSTable) (1 == (isSTable))
-#define CTG_IS_NOT_STABLE(isSTable) (0 == (isSTable))
-#define CTG_IS_UNKNOWN_STABLE(isSTable) ((isSTable) < 0)
-#define CTG_SET_STABLE(isSTable, tbType) do { (isSTable) = ((tbType) == TSDB_SUPER_TABLE) ? 1 : ((tbType) > TSDB_SUPER_TABLE ? 0 : -1); } while (0)
-#define CTG_TBTYPE_MATCH(isSTable, tbType) (CTG_IS_UNKNOWN_STABLE(isSTable) || (CTG_IS_STABLE(isSTable) && (tbType) == TSDB_SUPER_TABLE) || (CTG_IS_NOT_STABLE(isSTable) && (tbType) != TSDB_SUPER_TABLE))
+#define CTG_FLAG_STB         0x1
+#define CTG_FLAG_NOT_STB     0x2
+#define CTG_FLAG_UNKNOWN_STB 0x4
+#define CTG_FLAG_INF_DB      0x8
+
+#define CTG_IS_STB(_flag) ((_flag) & CTG_FLAG_STB)
+#define CTG_IS_NOT_STB(_flag) ((_flag) & CTG_FLAG_NOT_STB)
+#define CTG_IS_UNKNOWN_STB(_flag) ((_flag) & CTG_FLAG_UNKNOWN_STB)
+#define CTG_IS_INF_DB(_flag) ((_flag) & CTG_FLAG_INF_DB)
+#define CTG_SET_INF_DB(_flag) ((_flag) |= CTG_FLAG_INF_DB)
+#define CTG_SET_STB(_flag, tbType) do { (_flag) |= ((tbType) == TSDB_SUPER_TABLE) ? CTG_FLAG_STB : ((tbType) > TSDB_SUPER_TABLE ? CTG_FLAG_NOT_STB : CTG_FLAG_UNKNOWN_STB); } while (0)
+#define CTG_GEN_STB_FLAG(_isStb) ((_isStb) == 1) ? CTG_FLAG_STB : ((_isStb) == 0 ? CTG_FLAG_NOT_STB : CTG_FLAG_UNKNOWN_STB)
+#define CTG_TBTYPE_MATCH(_flag, tbType) (CTG_IS_UNKNOWN_STB(_flag) || (CTG_IS_STB(_flag) && (tbType) == TSDB_SUPER_TABLE) || (CTG_IS_NOT_STB(_flag) && (tbType) != TSDB_SUPER_TABLE))
+
+#define CTG_IS_INF_DBNAME(_dbname) ((*(_dbname) == 'i') && (0 == strcmp(_dbname, TSDB_INFORMATION_SCHEMA_DB)))
 
 #define CTG_META_SIZE(pMeta) (sizeof(STableMeta) + ((pMeta)->tableInfo.numOfTags + (pMeta)->tableInfo.numOfColumns) * sizeof(SSchema))
 
diff --git a/source/libs/catalog/src/catalog.c b/source/libs/catalog/src/catalog.c
index d62c189d33cd7c7621f8c65d3cf8981b9cf754b2..2b6caa2f8fb91f791f2ab30989398e9e12bf754e 100644
--- a/source/libs/catalog/src/catalog.c
+++ b/source/libs/catalog/src/catalog.c
@@ -509,7 +509,7 @@ int32_t ctgIsTableMetaExistInCache(SCatalog* pCtg, char *dbFName, char* tbName,
 }
 
 
-int32_t ctgGetTableMetaFromCache(SCatalog* pCtg, const SName* pTableName, STableMeta** pTableMeta, int32_t *exist) {
+int32_t ctgGetTableMetaFromCache(SCatalog* pCtg, const SName* pTableName, STableMeta** pTableMeta, int32_t *exist, int32_t flag) {
   if (NULL == pCtg->dbCache) {
     *exist = 0;
     ctgWarn("empty tbmeta cache, tbName:%s", pTableName->tname);
@@ -517,7 +517,11 @@ int32_t ctgGetTableMetaFromCache(SCatalog* pCtg, const SName* pTableName, STable
   }
 
   char dbFName[TSDB_DB_FNAME_LEN] = {0};
-  tNameGetFullDbName(pTableName, dbFName);
+  if (CTG_IS_INF_DB(flag)) {
+    strcpy(dbFName, pTableName->dbname);
+  } else {
+    tNameGetFullDbName(pTableName, dbFName);
+  }
 
   *pTableMeta = NULL;
 
@@ -590,15 +594,19 @@ int32_t ctgGetTableMetaFromCache(SCatalog* pCtg, const SName* pTableName, STable
   return TSDB_CODE_SUCCESS;
 }
 
-int32_t ctgGetTableTypeFromCache(SCatalog* pCtg, const SName* pTableName, int32_t *tbType) {
+int32_t ctgGetTableTypeFromCache(SCatalog* pCtg, const SName* pTableName, int32_t *tbType, int32_t flag) {
   if (NULL == pCtg->dbCache) {
     ctgWarn("empty db cache, tbName:%s", pTableName->tname);  
     return TSDB_CODE_SUCCESS;
   }
 
   char dbFName[TSDB_DB_FNAME_LEN] = {0};
-  tNameGetFullDbName(pTableName, dbFName);
-
+  if (CTG_IS_INF_DB(flag)) {
+    strcpy(dbFName, pTableName->dbname);
+  } else {
+    tNameGetFullDbName(pTableName, dbFName);
+  }
+  
   SCtgDBCache *dbCache = NULL;
   ctgAcquireDBCache(pCtg, dbFName, &dbCache);
   if (NULL == dbCache) {
@@ -629,7 +637,7 @@ int32_t ctgGetTableTypeFromCache(SCatalog* pCtg, const SName* pTableName, int32_
   return TSDB_CODE_SUCCESS;
 }
 
-int32_t ctgGetTableMetaFromMnodeImpl(SCatalog* pCtg, void *pTransporter, const SEpSet* pMgmtEps, char *dbFName, char* tbName, STableMetaOutput* output) {
+int32_t ctgGetTableMetaFromMnodeImpl(SCatalog* pCtg, void *pTrans, const SEpSet* pMgmtEps, char *dbFName, char* tbName, STableMetaOutput* output) {
   SBuildTableMetaInput bInput = {.vgId = 0, .dbFName = dbFName, .tbName = tbName};
   char *msg = NULL;
   SEpSet *pVnodeEpSet = NULL;
@@ -637,21 +645,21 @@ int32_t ctgGetTableMetaFromMnodeImpl(SCatalog* pCtg, void *pTransporter, const S
 
   ctgDebug("try to get table meta from mnode, dbFName:%s, tbName:%s", dbFName, tbName);
 
-  int32_t code = queryBuildMsg[TMSG_INDEX(TDMT_MND_STB_META)](&bInput, &msg, 0, &msgLen);
+  int32_t code = queryBuildMsg[TMSG_INDEX(TDMT_MND_TABLE_META)](&bInput, &msg, 0, &msgLen);
   if (code) {
     ctgError("Build mnode stablemeta msg failed, code:%x", code);
     CTG_ERR_RET(code);
   }
 
   SRpcMsg rpcMsg = {
-      .msgType = TDMT_MND_STB_META,
+      .msgType = TDMT_MND_TABLE_META,
       .pCont   = msg,
       .contLen = msgLen,
   };
 
   SRpcMsg rpcRsp = {0};
 
-  rpcSendRecv(pTransporter, (SEpSet*)pMgmtEps, &rpcMsg, &rpcRsp);
+  rpcSendRecv(pTrans, (SEpSet*)pMgmtEps, &rpcMsg, &rpcRsp);
   
   if (TSDB_CODE_SUCCESS != rpcRsp.code) {
     if (CTG_TABLE_NOT_EXIST(rpcRsp.code)) {
@@ -664,7 +672,7 @@ int32_t ctgGetTableMetaFromMnodeImpl(SCatalog* pCtg, void *pTransporter, const S
     CTG_ERR_RET(rpcRsp.code);
   }
 
-  code = queryProcessMsgRsp[TMSG_INDEX(TDMT_MND_STB_META)](output, rpcRsp.pCont, rpcRsp.contLen);
+  code = queryProcessMsgRsp[TMSG_INDEX(TDMT_MND_TABLE_META)](output, rpcRsp.pCont, rpcRsp.contLen);
   if (code) {
     ctgError("Process mnode stablemeta rsp failed, code:%x, dbFName:%s, tbName:%s", code, dbFName, tbName);
     CTG_ERR_RET(code);
@@ -675,15 +683,15 @@ int32_t ctgGetTableMetaFromMnodeImpl(SCatalog* pCtg, void *pTransporter, const S
   return TSDB_CODE_SUCCESS;
 }
 
-int32_t ctgGetTableMetaFromMnode(SCatalog* pCtg, void *pTransporter, const SEpSet* pMgmtEps, const SName* pTableName, STableMetaOutput* output) {
+int32_t ctgGetTableMetaFromMnode(SCatalog* pCtg, void *pTrans, const SEpSet* pMgmtEps, const SName* pTableName, STableMetaOutput* output) {
   char dbFName[TSDB_DB_FNAME_LEN];
   tNameGetFullDbName(pTableName, dbFName);
 
-  return ctgGetTableMetaFromMnodeImpl(pCtg, pTransporter, pMgmtEps, dbFName, (char *)pTableName->tname, output);
+  return ctgGetTableMetaFromMnodeImpl(pCtg, pTrans, pMgmtEps, dbFName, (char *)pTableName->tname, output);
 }
 
-int32_t ctgGetTableMetaFromVnode(SCatalog* pCtg, void *pTransporter, const SEpSet* pMgmtEps, const SName* pTableName, SVgroupInfo *vgroupInfo, STableMetaOutput* output) {
-  if (NULL == pCtg || NULL == pTransporter || NULL == pMgmtEps || NULL == pTableName || NULL == vgroupInfo || NULL == output) {
+int32_t ctgGetTableMetaFromVnode(SCatalog* pCtg, void *pTrans, const SEpSet* pMgmtEps, const SName* pTableName, SVgroupInfo *vgroupInfo, STableMetaOutput* output) {
+  if (NULL == pCtg || NULL == pTrans || NULL == pMgmtEps || NULL == pTableName || NULL == vgroupInfo || NULL == output) {
     CTG_ERR_RET(TSDB_CODE_CTG_INVALID_INPUT);
   }
 
@@ -709,7 +717,7 @@ int32_t ctgGetTableMetaFromVnode(SCatalog* pCtg, void *pTransporter, const SEpSe
   };
 
   SRpcMsg rpcRsp = {0};
-  rpcSendRecv(pTransporter, &vgroupInfo->epset, &rpcMsg, &rpcRsp);
+  rpcSendRecv(pTrans, &vgroupInfo->epset, &rpcMsg, &rpcRsp);
   
   if (TSDB_CODE_SUCCESS != rpcRsp.code) {
     if (CTG_TABLE_NOT_EXIST(rpcRsp.code)) {
@@ -829,7 +837,7 @@ int32_t ctgGetVgInfoFromHashValue(SCatalog *pCtg, SDBVgInfo *dbInfo, const SName
   CTG_RET(code);
 }
 
-int32_t ctgSTableVersionCompare(const void* key1, const void* key2) {
+int32_t ctgStbVersionCompare(const void* key1, const void* key2) {
   if (*(uint64_t *)key1 < ((SSTableMetaVersion*)key2)->suid) {
     return -1;
   } else if (*(uint64_t *)key1 > ((SSTableMetaVersion*)key2)->suid) {
@@ -1078,6 +1086,10 @@ int32_t ctgAddNewDBCache(SCatalog *pCtg, const char *dbFName, uint64_t dbId) {
 
   ctgDebug("db added to cache, dbFName:%s, dbId:%"PRIx64, dbFName, dbId);
 
+  if (CTG_IS_INF_DBNAME(dbFName)) {
+    return TSDB_CODE_SUCCESS;
+  }
+
   CTG_ERR_RET(ctgMetaRentAdd(&pCtg->dbRent, &vgVersion, dbId, sizeof(SDbVgVersion)));
 
   ctgDebug("db added to rent, dbFName:%s, vgVersion:%d, dbId:%"PRIx64, dbFName, vgVersion.vgVersion, dbId);
@@ -1100,7 +1112,7 @@ void ctgRemoveStbRent(SCatalog* pCtg, SCtgTbMetaCache *cache) {
       uint64_t *suid = NULL;
       taosHashGetKey(pIter, (void **)&suid, NULL);
 
-      if (TSDB_CODE_SUCCESS == ctgMetaRentRemove(&pCtg->stbRent, *suid, ctgSTableVersionCompare)) {
+      if (TSDB_CODE_SUCCESS == ctgMetaRentRemove(&pCtg->stbRent, *suid, ctgStbVersionCompare)) {
         ctgDebug("stb removed from rent, suid:%"PRIx64, *suid);
       }
           
@@ -1258,7 +1270,7 @@ int32_t ctgUpdateTblMeta(SCatalog *pCtg, SCtgDBCache *dbCache, char *dbFName, ui
 
       ctgDebug("stb removed from stbCache, dbFName:%s, stb:%s, suid:%"PRIx64, dbFName, tbName, orig->suid);
       
-      ctgMetaRentRemove(&pCtg->stbRent, orig->suid, ctgSTableVersionCompare);
+      ctgMetaRentRemove(&pCtg->stbRent, orig->suid, ctgStbVersionCompare);
     }
   }
 
@@ -1428,15 +1440,17 @@ int32_t ctgCloneMetaOutput(STableMetaOutput *output, STableMetaOutput **pOutput)
 
 
 
-int32_t ctgRefreshTblMeta(SCatalog* pCtg, void *pTransporter, const SEpSet* pMgmtEps, const SName* pTableName, int32_t isSTable, STableMetaOutput **pOutput) {
-  if (NULL == pCtg || NULL == pTransporter || NULL == pMgmtEps || NULL == pTableName) {
+int32_t ctgRefreshTblMeta(SCatalog* pCtg, void *pTrans, const SEpSet* pMgmtEps, const SName* pTableName, int32_t flag, STableMetaOutput **pOutput) {
+  if (NULL == pCtg || NULL == pTrans || NULL == pMgmtEps || NULL == pTableName) {
     CTG_ERR_RET(TSDB_CODE_CTG_INVALID_INPUT);
   }
 
   SVgroupInfo vgroupInfo = {0};
   int32_t code = 0;
 
-  CTG_ERR_RET(catalogGetTableHashVgroup(pCtg, pTransporter, pMgmtEps, pTableName, &vgroupInfo));
+  if (!CTG_IS_INF_DB(flag)) {
+    CTG_ERR_RET(catalogGetTableHashVgroup(pCtg, pTrans, pMgmtEps, pTableName, &vgroupInfo));
+  }
 
   SCtgUpdateTblMsg *msg = NULL;
   STableMetaOutput  moutput = {0};
@@ -1445,33 +1459,37 @@ int32_t ctgRefreshTblMeta(SCatalog* pCtg, void *pTransporter, const SEpSet* pMgm
     ctgError("malloc %d failed", (int32_t)sizeof(STableMetaOutput));
     CTG_ERR_RET(TSDB_CODE_CTG_MEM_ERROR);
   }
-  
-  if (CTG_IS_STABLE(isSTable)) {
+
+  if (CTG_IS_INF_DB(flag)) {
+    ctgDebug("will refresh tbmeta, supposed in information_schema, tbName:%s", tNameGetTableName(pTableName));
+
+    CTG_ERR_JRET(ctgGetTableMetaFromMnodeImpl(pCtg, pTrans, pMgmtEps, (char *)pTableName->dbname, (char *)pTableName->tname, output));
+  } else if (CTG_IS_STB(flag)) {
     ctgDebug("will refresh tbmeta, supposed to be stb, tbName:%s", tNameGetTableName(pTableName));
 
     // if get from mnode failed, will not try vnode
-    CTG_ERR_JRET(ctgGetTableMetaFromMnode(pCtg, pTransporter, pMgmtEps, pTableName, output));
+    CTG_ERR_JRET(ctgGetTableMetaFromMnode(pCtg, pTrans, pMgmtEps, pTableName, output));
 
     if (CTG_IS_META_NULL(output->metaType)) {
-      CTG_ERR_JRET(ctgGetTableMetaFromVnode(pCtg, pTransporter, pMgmtEps, pTableName, &vgroupInfo, output));
+      CTG_ERR_JRET(ctgGetTableMetaFromVnode(pCtg, pTrans, pMgmtEps, pTableName, &vgroupInfo, output));
     }
   } else {
-    ctgDebug("will refresh tbmeta, not supposed to be stb, tbName:%s, isStable:%d", tNameGetTableName(pTableName), isSTable);
+    ctgDebug("will refresh tbmeta, not supposed to be stb, tbName:%s, flag:%d", tNameGetTableName(pTableName), flag);
 
     // if get from vnode failed or no table meta, will not try mnode
-    CTG_ERR_JRET(ctgGetTableMetaFromVnode(pCtg, pTransporter, pMgmtEps, pTableName, &vgroupInfo, output));
+    CTG_ERR_JRET(ctgGetTableMetaFromVnode(pCtg, pTrans, pMgmtEps, pTableName, &vgroupInfo, output));
 
     if (CTG_IS_META_TABLE(output->metaType) && TSDB_SUPER_TABLE == output->tbMeta->tableType) {
       ctgDebug("will continue to refresh tbmeta since got stb, tbName:%s, metaType:%d", tNameGetTableName(pTableName), output->metaType);
 
       tfree(output->tbMeta);
       
-      CTG_ERR_JRET(ctgGetTableMetaFromMnodeImpl(pCtg, pTransporter, pMgmtEps, output->dbFName, output->tbName, output));
+      CTG_ERR_JRET(ctgGetTableMetaFromMnodeImpl(pCtg, pTrans, pMgmtEps, output->dbFName, output->tbName, output));
     } else if (CTG_IS_META_BOTH(output->metaType)) {
       int32_t exist = 0;
       CTG_ERR_JRET(ctgIsTableMetaExistInCache(pCtg, output->dbFName, output->tbName, &exist));
       if (0 == exist) {
-        CTG_ERR_JRET(ctgGetTableMetaFromMnodeImpl(pCtg, pTransporter, pMgmtEps, output->dbFName, output->tbName, &moutput));
+        CTG_ERR_JRET(ctgGetTableMetaFromMnodeImpl(pCtg, pTrans, pMgmtEps, output->dbFName, output->tbName, &moutput));
 
         if (CTG_IS_META_NULL(moutput.metaType)) {
           SET_META_TYPE_NULL(output->metaType);
@@ -1530,7 +1548,7 @@ _return:
   CTG_RET(code);
 }
 
-int32_t ctgGetTableMeta(SCatalog* pCtg, void *pRpc, const SEpSet* pMgmtEps, const SName* pTableName, bool forceUpdate, STableMeta** pTableMeta, int32_t isSTable) {
+int32_t ctgGetTableMeta(SCatalog* pCtg, void *pRpc, const SEpSet* pMgmtEps, const SName* pTableName, bool forceUpdate, STableMeta** pTableMeta, int32_t flag) {
   if (NULL == pCtg || NULL == pRpc || NULL == pMgmtEps || NULL == pTableName || NULL == pTableMeta) {
     CTG_ERR_RET(TSDB_CODE_CTG_INVALID_INPUT);
   }
@@ -1538,26 +1556,30 @@ int32_t ctgGetTableMeta(SCatalog* pCtg, void *pRpc, const SEpSet* pMgmtEps, cons
   int32_t exist = 0;
   int32_t code = 0;
 
-  if (!forceUpdate) {
-    CTG_ERR_RET(ctgGetTableMetaFromCache(pCtg, pTableName, pTableMeta, &exist));
+  if (CTG_IS_INF_DBNAME(pTableName->dbname)) {
+    CTG_SET_INF_DB(flag);
+  }
 
-    if (exist && CTG_TBTYPE_MATCH(isSTable, (*pTableMeta)->tableType)) {
+  if ((!forceUpdate) || (CTG_IS_INF_DB(flag))) {
+    CTG_ERR_RET(ctgGetTableMetaFromCache(pCtg, pTableName, pTableMeta, &exist, flag));
+
+    if (exist && CTG_TBTYPE_MATCH(flag, (*pTableMeta)->tableType)) {
       return TSDB_CODE_SUCCESS;
     }
 
     tfree(*pTableMeta);
-  } else if (CTG_IS_UNKNOWN_STABLE(isSTable)) {
+  } else if (CTG_IS_UNKNOWN_STB(flag)) {
     int32_t tbType = 0;
     
-    CTG_ERR_RET(ctgGetTableTypeFromCache(pCtg, pTableName, &tbType));
+    CTG_ERR_RET(ctgGetTableTypeFromCache(pCtg, pTableName, &tbType, flag));
 
-    CTG_SET_STABLE(isSTable, tbType);
+    CTG_SET_STB(flag, tbType);
   }
 
   STableMetaOutput *output = NULL;
 
   while (true) {
-    CTG_ERR_JRET(ctgRefreshTblMeta(pCtg, pRpc, pMgmtEps, pTableName, isSTable, &output));
+    CTG_ERR_JRET(ctgRefreshTblMeta(pCtg, pRpc, pMgmtEps, pTableName, flag, &output));
 
     if (CTG_IS_META_TABLE(output->metaType)) {
       *pTableMeta = output->tbMeta;
@@ -1582,7 +1604,7 @@ int32_t ctgGetTableMeta(SCatalog* pCtg, void *pRpc, const SEpSet* pMgmtEps, cons
     SName stbName = *pTableName;
     strcpy(stbName.tname, output->tbName);
     
-    CTG_ERR_JRET(ctgGetTableMetaFromCache(pCtg, &stbName, pTableMeta, &exist));
+    CTG_ERR_JRET(ctgGetTableMetaFromCache(pCtg, &stbName, pTableMeta, &exist, flag));
     if (0 == exist) {
       ctgDebug("stb no longer exist, dbFName:%s, tbName:%s", output->dbFName, pTableName->tname);
       continue;
@@ -1663,6 +1685,11 @@ int32_t ctgActUpdateTbl(SCtgMetaAction *action) {
     CTG_ERR_JRET(TSDB_CODE_CTG_INTERNAL_ERROR);
   }    
 
+  char *p = strchr(output->dbFName, '.');
+  if (p && CTG_IS_INF_DBNAME(p + 1)) {
+    memmove(output->dbFName, p + 1, strlen(p + 1));
+  }
+  
   CTG_ERR_JRET(ctgGetAddDBCache(pCtg, output->dbFName, output->dbId, &dbCache));
   if (NULL == dbCache) {
     ctgInfo("conflict db update, ignore this update, dbFName:%s, dbId:%"PRIx64, output->dbFName, output->dbId);
@@ -1729,7 +1756,7 @@ int32_t ctgActRemoveStb(SCtgMetaAction *action) {
   
   ctgInfo("stb removed from cache, dbFName:%s, stbName:%s, suid:%"PRIx64, msg->dbFName, msg->stbName, msg->suid);
 
-  CTG_ERR_JRET(ctgMetaRentRemove(&msg->pCtg->stbRent, msg->suid, ctgSTableVersionCompare));
+  CTG_ERR_JRET(ctgMetaRentRemove(&msg->pCtg->stbRent, msg->suid, ctgStbVersionCompare));
   
   ctgDebug("stb removed from rent, dbFName:%s, stbName:%s, suid:%"PRIx64, msg->dbFName, msg->stbName, msg->suid);
   
@@ -2140,16 +2167,16 @@ _return:
 }
 
 
-int32_t catalogGetTableMeta(SCatalog* pCtg, void *pTransporter, const SEpSet* pMgmtEps, const SName* pTableName, STableMeta** pTableMeta) {
+int32_t catalogGetTableMeta(SCatalog* pCtg, void *pTrans, const SEpSet* pMgmtEps, const SName* pTableName, STableMeta** pTableMeta) {
   CTG_API_ENTER();
 
-  CTG_API_LEAVE(ctgGetTableMeta(pCtg, pTransporter, pMgmtEps, pTableName, false, pTableMeta, -1));
+  CTG_API_LEAVE(ctgGetTableMeta(pCtg, pTrans, pMgmtEps, pTableName, false, pTableMeta, CTG_FLAG_UNKNOWN_STB));
 }
 
-int32_t catalogGetSTableMeta(SCatalog* pCtg, void * pTransporter, const SEpSet* pMgmtEps, const SName* pTableName, STableMeta** pTableMeta) {
+int32_t catalogGetSTableMeta(SCatalog* pCtg, void * pTrans, const SEpSet* pMgmtEps, const SName* pTableName, STableMeta** pTableMeta) {
   CTG_API_ENTER();
 
-  CTG_API_LEAVE(ctgGetTableMeta(pCtg, pTransporter, pMgmtEps, pTableName, false, pTableMeta, 1));
+  CTG_API_LEAVE(ctgGetTableMeta(pCtg, pTrans, pMgmtEps, pTableName, false, pTableMeta, CTG_FLAG_STB));
 }
 
 int32_t catalogUpdateSTableMeta(SCatalog* pCtg, STableMetaRsp *rspMsg) {
@@ -2204,20 +2231,20 @@ _return:
 }
 
 
-int32_t catalogRefreshTableMeta(SCatalog* pCtg, void *pTransporter, const SEpSet* pMgmtEps, const SName* pTableName, int32_t isSTable) {
+int32_t catalogRefreshTableMeta(SCatalog* pCtg, void *pTrans, const SEpSet* pMgmtEps, const SName* pTableName, int32_t isSTable) {
   CTG_API_ENTER();
 
-  if (NULL == pCtg || NULL == pTransporter || NULL == pMgmtEps || NULL == pTableName) {
+  if (NULL == pCtg || NULL == pTrans || NULL == pMgmtEps || NULL == pTableName) {
     CTG_API_LEAVE(TSDB_CODE_CTG_INVALID_INPUT);
   }
 
-  CTG_API_LEAVE(ctgRefreshTblMeta(pCtg, pTransporter, pMgmtEps, pTableName, isSTable, NULL));
+  CTG_API_LEAVE(ctgRefreshTblMeta(pCtg, pTrans, pMgmtEps, pTableName, CTG_GEN_STB_FLAG(isSTable), NULL));
 }
 
-int32_t catalogRefreshGetTableMeta(SCatalog* pCtg, void *pTransporter, const SEpSet* pMgmtEps, const SName* pTableName, STableMeta** pTableMeta, int32_t isSTable) {
+int32_t catalogRefreshGetTableMeta(SCatalog* pCtg, void *pTrans, const SEpSet* pMgmtEps, const SName* pTableName, STableMeta** pTableMeta, int32_t isSTable) {
   CTG_API_ENTER();
 
-  CTG_API_LEAVE(ctgGetTableMeta(pCtg, pTransporter, pMgmtEps, pTableName, true, pTableMeta, isSTable));
+  CTG_API_LEAVE(ctgGetTableMeta(pCtg, pTrans, pMgmtEps, pTableName, true, pTableMeta, CTG_GEN_STB_FLAG(isSTable)));
 }
 
 int32_t catalogGetTableDistVgInfo(SCatalog* pCtg, void *pRpc, const SEpSet* pMgmtEps, const SName* pTableName, SArray** pVgList) {
@@ -2226,6 +2253,11 @@ int32_t catalogGetTableDistVgInfo(SCatalog* pCtg, void *pRpc, const SEpSet* pMgm
   if (NULL == pCtg || NULL == pRpc || NULL == pMgmtEps || NULL == pTableName || NULL == pVgList) {
     CTG_API_LEAVE(TSDB_CODE_CTG_INVALID_INPUT);
   }
+
+  if (CTG_IS_INF_DBNAME(pTableName->dbname)) {
+    ctgError("no valid vgInfo for db, dbname:%s", pTableName->dbname);
+    CTG_API_LEAVE(TSDB_CODE_CTG_INVALID_INPUT);
+  }
   
   STableMeta *tbMeta = NULL;
   int32_t code = 0;
@@ -2236,7 +2268,7 @@ int32_t catalogGetTableDistVgInfo(SCatalog* pCtg, void *pRpc, const SEpSet* pMgm
 
   *pVgList = NULL;
   
-  CTG_ERR_JRET(ctgGetTableMeta(pCtg, pRpc, pMgmtEps, pTableName, false, &tbMeta, -1));
+  CTG_ERR_JRET(ctgGetTableMeta(pCtg, pRpc, pMgmtEps, pTableName, false, &tbMeta, CTG_FLAG_UNKNOWN_STB));
 
   char db[TSDB_DB_FNAME_LEN] = {0};
   tNameGetFullDbName(pTableName, db);
@@ -2307,16 +2339,21 @@ _return:
 }
 
 
-int32_t catalogGetTableHashVgroup(SCatalog *pCtg, void *pTransporter, const SEpSet *pMgmtEps, const SName *pTableName, SVgroupInfo *pVgroup) {
+int32_t catalogGetTableHashVgroup(SCatalog *pCtg, void *pTrans, const SEpSet *pMgmtEps, const SName *pTableName, SVgroupInfo *pVgroup) {
   CTG_API_ENTER();
 
+  if (CTG_IS_INF_DBNAME(pTableName->dbname)) {
+    ctgError("no valid vgInfo for db, dbname:%s", pTableName->dbname);
+    CTG_API_LEAVE(TSDB_CODE_CTG_INVALID_INPUT);
+  }
+
   SCtgDBCache* dbCache = NULL;
   int32_t code = 0;
   char db[TSDB_DB_FNAME_LEN] = {0};
   tNameGetFullDbName(pTableName, db);
 
   SDBVgInfo *vgInfo = NULL;
-  CTG_ERR_JRET(ctgGetDBVgInfo(pCtg, pTransporter, pMgmtEps, db, false, &dbCache, &vgInfo));
+  CTG_ERR_JRET(ctgGetDBVgInfo(pCtg, pTrans, pMgmtEps, db, false, &dbCache, &vgInfo));
 
   CTG_ERR_JRET(ctgGetVgInfoFromHashValue(pCtg, vgInfo ? vgInfo : dbCache->vgInfo, pTableName, pVgroup));
 
@@ -2336,10 +2373,10 @@ _return:
 }
 
 
-int32_t catalogGetAllMeta(SCatalog* pCtg, void *pTransporter, const SEpSet* pMgmtEps, const SCatalogReq* pReq, SMetaData* pRsp) {
+int32_t catalogGetAllMeta(SCatalog* pCtg, void *pTrans, const SEpSet* pMgmtEps, const SCatalogReq* pReq, SMetaData* pRsp) {
   CTG_API_ENTER();
 
-  if (NULL == pCtg || NULL == pTransporter || NULL == pMgmtEps || NULL == pReq || NULL == pRsp) {
+  if (NULL == pCtg || NULL == pTrans || NULL == pMgmtEps || NULL == pReq || NULL == pRsp) {
     CTG_API_LEAVE(TSDB_CODE_CTG_INVALID_INPUT);
   }
 
@@ -2363,7 +2400,7 @@ int32_t catalogGetAllMeta(SCatalog* pCtg, void *pTransporter, const SEpSet* pMgm
       SName *name = taosArrayGet(pReq->pTableName, i);
       STableMeta *pTableMeta = NULL;
       
-      CTG_ERR_JRET(ctgGetTableMeta(pCtg, pTransporter, pMgmtEps, name, false, &pTableMeta, -1));
+      CTG_ERR_JRET(ctgGetTableMeta(pCtg, pTrans, pMgmtEps, name, false, &pTableMeta, CTG_FLAG_UNKNOWN_STB));
 
       if (NULL == taosArrayPush(pRsp->pTableMeta, &pTableMeta)) {
         ctgError("taosArrayPush failed, idx:%d", i);
diff --git a/source/libs/catalog/test/catalogTests.cpp b/source/libs/catalog/test/catalogTests.cpp
index ebe20fbb7fb9053463b265ffd1442527e35f1e3c..f3aecadd3fef9fb3231ef720e23954058861ca67 100644
--- a/source/libs/catalog/test/catalogTests.cpp
+++ b/source/libs/catalog/test/catalogTests.cpp
@@ -38,7 +38,7 @@
 namespace {
 
 extern "C" int32_t ctgGetTableMetaFromCache(struct SCatalog *pCatalog, const SName *pTableName, STableMeta **pTableMeta,
-                                            int32_t *exist);
+                                            int32_t *exist, int32_t flag);
 extern "C" int32_t ctgDbgGetClusterCacheNum(struct SCatalog* pCatalog, int32_t type);
 extern "C" int32_t ctgActUpdateTbl(SCtgMetaAction *action);
 extern "C" int32_t ctgDbgEnableDebug(char *option);
@@ -243,6 +243,8 @@ void ctgTestBuildSTableMetaRsp(STableMetaRsp *rspMsg) {
   rspMsg->suid = ctgTestSuid + 1;
   rspMsg->tuid = ctgTestSuid + 1;
   rspMsg->vgId = 1;
+  
+  rspMsg->pSchemas = (SSchema *)calloc(rspMsg->numOfTags + rspMsg->numOfColumns, sizeof(SSchema));
 
   SSchema *s = NULL;
   s = &rspMsg->pSchemas[0];
@@ -770,7 +772,7 @@ void *ctgTestGetCtableMetaThread(void *param) {
   strcpy(cn.tname, ctgTestCTablename);
 
   while (!ctgTestStop) {
-    code = ctgGetTableMetaFromCache(pCtg, &cn, &tbMeta, &exist);
+    code = ctgGetTableMetaFromCache(pCtg, &cn, &tbMeta, &exist, 0);
     if (code || 0 == exist) {
       assert(0);
     }
@@ -827,6 +829,7 @@ void *ctgTestSetCtableMetaThread(void *param) {
 
 #if 0
 
+
 TEST(tableMeta, normalTable) {
   struct SCatalog *pCtg = NULL;
   void            *mockPointer = (void *)0x1;
@@ -1289,6 +1292,7 @@ TEST(tableMeta, updateStbMeta) {
 
   code = catalogUpdateSTableMeta(pCtg, &rsp);
   ASSERT_EQ(code, 0);
+  tfree(rsp.pSchemas);
 
   while (true) {
     uint64_t n = 0;
diff --git a/source/libs/nodes/src/nodesTraverseFuncs.c b/source/libs/nodes/src/nodesTraverseFuncs.c
index e61375b2023670db09338a8bd7a844e22c5f5788..5c81cce94aa66f8b082e686c509fef483eff13e2 100644
--- a/source/libs/nodes/src/nodesTraverseFuncs.c
+++ b/source/libs/nodes/src/nodesTraverseFuncs.c
@@ -105,6 +105,9 @@ static EDealRes walkNode(SNode* pNode, ETraversalOrder order, FNodeWalker walker
     case QUERY_NODE_RAW_EXPR:
       res = walkNode(((SRawExprNode*)pNode)->pNode, order, walker, pContext);
       break;
+    case QUERY_NODE_TARGET:
+      res = walkNode(((STargetNode*)pNode)->pExpr, order, walker, pContext);
+      break;
     default:
       break;
   }
@@ -228,6 +231,9 @@ static EDealRes rewriteNode(SNode** pRawNode, ETraversalOrder order, FNodeRewrit
     case QUERY_NODE_RAW_EXPR:
       res = rewriteNode(&(((SRawExprNode*)pNode)->pNode), order, rewriter, pContext);
       break;
+    case QUERY_NODE_TARGET:
+      res = rewriteNode(&(((STargetNode*)pNode)->pExpr), order, rewriter, pContext);
+      break;
     default:
       break;
   }
diff --git a/source/libs/nodes/src/nodesUtilFuncs.c b/source/libs/nodes/src/nodesUtilFuncs.c
index 5d51b2e5232baf746256a994d6df8a834d3ba0fd..eac5606bd62e2a3d4b1868359483d6e30caca90c 100644
--- a/source/libs/nodes/src/nodesUtilFuncs.c
+++ b/source/libs/nodes/src/nodesUtilFuncs.c
@@ -101,20 +101,47 @@ SNode* nodesMakeNode(ENodeType type) {
   return NULL;
 }
 
-static EDealRes destroyNode(SNode* pNode, void* pContext) {
-  switch (nodeType(pNode)) {
-    case QUERY_NODE_VALUE:
-      tfree(((SValueNode*)pNode)->literal);
+static EDealRes destroyNode(SNode** pNode, void* pContext) {
+  if (NULL == pNode || NULL == *pNode) {
+    return DEAL_RES_IGNORE_CHILD;
+  }
+  
+  switch (nodeType(*pNode)) {
+    case QUERY_NODE_VALUE: {
+      SValueNode* pValue = (SValueNode*)*pNode;
+      
+      tfree(pValue->literal);
+      if (IS_VAR_DATA_TYPE(pValue->node.resType.type)) {
+        tfree(pValue->datum.p);
+      }
+      
+      break;
+    }
+    case QUERY_NODE_LOGIC_CONDITION:
+      nodesDestroyList(((SLogicConditionNode*)(*pNode))->pParameterList);
+      break;
+    case QUERY_NODE_FUNCTION:
+      nodesDestroyList(((SFunctionNode*)(*pNode))->pParameterList);
+      break;
+    case QUERY_NODE_GROUPING_SET:
+      nodesDestroyList(((SGroupingSetNode*)(*pNode))->pParameterList);
+      break;
+    case QUERY_NODE_NODE_LIST:
+      nodesDestroyList(((SNodeListNode*)(*pNode))->pNodeList);
       break;
     default:
       break;
   }
-  tfree(pNode);
+  tfree(*pNode);
   return DEAL_RES_CONTINUE;
 }
 
 void nodesDestroyNode(SNode* pNode) {
-  nodesWalkNodePostOrder(pNode, destroyNode, NULL);
+  if (NULL == pNode) {
+    return;
+  }
+  
+  nodesRewriteNodePostOrder(&pNode, destroyNode, NULL);
 }
 
 SNodeList* nodesMakeList() {
@@ -191,9 +218,9 @@ SNode* nodesListGetNode(SNodeList* pList, int32_t index) {
 }
 
 void nodesDestroyList(SNodeList* pList) {
-  SNode* node;
-  FOREACH(node, pList) {
-    nodesDestroyNode(node);
+  SListCell* pNext = pList->pHead;
+  while (NULL != pNext) {
+    pNext = nodesListErase(pList, pNext);
   }
   tfree(pList);
 }
diff --git a/source/libs/parser/src/dCDAstProcess.c b/source/libs/parser/src/dCDAstProcess.c
index b4125b0a24e92c1f3b3266fc980c5e92297cca03..6131d50c127be5c1270cc9e5da18d55c9033137a 100644
--- a/source/libs/parser/src/dCDAstProcess.c
+++ b/source/libs/parser/src/dCDAstProcess.c
@@ -260,8 +260,11 @@ static int32_t doParseSerializeTagValue(SSchema* pTagSchema, int32_t numOfInputT
     SKvParam param = {.builder = pKvRowBuilder, .schema = pSchema};
 
     SToken* pItem = taosArrayGet(pTagValList, i);
-    code = parseValueToken(&endPtr, pItem, pSchema, tsPrecision, tmpTokenBuf, KvRowAppend, &param, pMsgBuf);
+    if (pSchema->type == TSDB_DATA_TYPE_TIMESTAMP && pItem->z[0] == '\'') {
+      pItem->z += 1;
+    }
 
+    code = parseValueToken(&endPtr, pItem, pSchema, tsPrecision, tmpTokenBuf, KvRowAppend, &param, pMsgBuf);
     if (code != TSDB_CODE_SUCCESS) {
       return buildInvalidOperationMsg(pMsgBuf, msg1);
     }
diff --git a/source/libs/qcom/src/querymsg.c b/source/libs/qcom/src/querymsg.c
index 753ac75860539574f6691dea3e500c241f7dc723..8bc29656d41300a9db7c7ba6d22a22c83c72001d 100644
--- a/source/libs/qcom/src/querymsg.c
+++ b/source/libs/qcom/src/querymsg.c
@@ -198,7 +198,7 @@ int32_t queryCreateTableMetaFromMsg(STableMetaRsp *msg, bool isSuperTable, STabl
 }
 
 int32_t queryProcessTableMetaRsp(void *output, char *msg, int32_t msgSize) {
-  int32_t       code = -1;
+  int32_t       code = 0;
   STableMetaRsp metaRsp = {0};
 
   if (NULL == output || NULL == msg || msgSize <= 0) {
@@ -216,7 +216,7 @@ int32_t queryProcessTableMetaRsp(void *output, char *msg, int32_t msgSize) {
     goto PROCESS_META_OVER;
   }
 
-  if (!tIsValidSchema(metaRsp.pSchemas, metaRsp.numOfColumns, metaRsp.numOfTags)) {
+  if (0 != strcmp(metaRsp.dbFName, TSDB_INFORMATION_SCHEMA_DB) && !tIsValidSchema(metaRsp.pSchemas, metaRsp.numOfColumns, metaRsp.numOfTags)) {
     code = TSDB_CODE_TSC_INVALID_VALUE;
     goto PROCESS_META_OVER;
   }
@@ -254,11 +254,11 @@ PROCESS_META_OVER:
 
 void initQueryModuleMsgHandle() {
   queryBuildMsg[TMSG_INDEX(TDMT_VND_TABLE_META)] = queryBuildTableMetaReqMsg;
-  queryBuildMsg[TMSG_INDEX(TDMT_MND_STB_META)] = queryBuildTableMetaReqMsg;
+  queryBuildMsg[TMSG_INDEX(TDMT_MND_TABLE_META)] = queryBuildTableMetaReqMsg;
   queryBuildMsg[TMSG_INDEX(TDMT_MND_USE_DB)] = queryBuildUseDbMsg;
 
   queryProcessMsgRsp[TMSG_INDEX(TDMT_VND_TABLE_META)] = queryProcessTableMetaRsp;
-  queryProcessMsgRsp[TMSG_INDEX(TDMT_MND_STB_META)] = queryProcessTableMetaRsp;
+  queryProcessMsgRsp[TMSG_INDEX(TDMT_MND_TABLE_META)] = queryProcessTableMetaRsp;
   queryProcessMsgRsp[TMSG_INDEX(TDMT_MND_USE_DB)] = queryProcessUseDBRsp;
 }
 
diff --git a/source/libs/scalar/inc/filterInt.h b/source/libs/scalar/inc/filterInt.h
index 959b1d9af12ed859f976d106fe510e6060a51946..b4fe9a67caa2e8bb354d486cd3ff51427266b290 100644
--- a/source/libs/scalar/inc/filterInt.h
+++ b/source/libs/scalar/inc/filterInt.h
@@ -253,6 +253,7 @@ typedef struct SFilterInfo {
   uint32_t         *blkUnits;
   int8_t           *blkUnitRes;
   void             *pTable;
+  SArray           *blkList;
 
   SFilterPCtx       pctx;
 } SFilterInfo;
diff --git a/source/libs/scalar/inc/sclInt.h b/source/libs/scalar/inc/sclInt.h
index 59834ba299af732d3142869bed4fa732a7982c63..b79221cf82c50bdd560ef40bb8dab90b48c206b4 100644
--- a/source/libs/scalar/inc/sclInt.h
+++ b/source/libs/scalar/inc/sclInt.h
@@ -24,7 +24,7 @@ extern "C" {
 
 typedef struct SScalarCtx {
   int32_t      code;
-  SSDataBlock *pSrc; 
+  SArray      *pBlockList;  /* element is SSDataBlock* */
   SHashObj    *pRes;  /* element is SScalarParam */
 } SScalarCtx;
 
@@ -44,10 +44,13 @@ typedef struct SScalarCtx {
 #define SCL_ERR_JRET(c) do { code = c; if (code != TSDB_CODE_SUCCESS) { terrno = code; goto _return; } } while (0)
 
 
-
+int32_t sclMoveParamListData(SScalarParam *params, int32_t listNum, int32_t idx);
+bool sclIsNull(SScalarParam* param, int32_t idx);
+void sclSetNull(SScalarParam* param, int32_t idx);
+void sclFreeParam(SScalarParam *param);
 
 #ifdef __cplusplus
 }
 #endif
 
-#endif  // TDENGINE_SCALARINT_H
\ No newline at end of file
+#endif  // TDENGINE_SCALARINT_H
diff --git a/source/libs/scalar/inc/sclvector.h b/source/libs/scalar/inc/sclvector.h
index 55c482874511c86ef630c189df751f6b018b71d7..09b813359a6ef98f311577f04b0798dac1d272b4 100644
--- a/source/libs/scalar/inc/sclvector.h
+++ b/source/libs/scalar/inc/sclvector.h
@@ -22,7 +22,11 @@ extern "C" {
 
 #include "sclfunc.h"
 
-typedef void (*_bin_scalar_fn_t)(SScalarParam* pLeft, SScalarParam* pRight, void *output, int32_t order);
+typedef double (*_mathFunc)(double, double, bool *);
+
+
+typedef void (*_bufConverteFunc)(char *buf, SScalarParam* pOut, int32_t outType);
+typedef void (*_bin_scalar_fn_t)(SScalarParam* pLeft, SScalarParam* pRight, SScalarParam *output, int32_t order);
 _bin_scalar_fn_t getBinScalarOperatorFn(int32_t binOperator);
 
 #ifdef __cplusplus
diff --git a/source/libs/scalar/src/filter.c b/source/libs/scalar/src/filter.c
index 8a7d6ae9109a689e268622b710ad9ed9933bb939..e5be22c0a8862150e15ac0aa6628341e6f5c30c4 100644
--- a/source/libs/scalar/src/filter.c
+++ b/source/libs/scalar/src/filter.c
@@ -18,6 +18,7 @@
 //#include "queryLog.h"
 #include "tcompare.h"
 #include "filterInt.h"
+#include "sclInt.h"
 #include "filter.h"
 #include "tep.h"
 
@@ -1678,7 +1679,7 @@ void filterFreeInfo(SFilterInfo *info) {
   tfree(info->cunits);
   tfree(info->blkUnitRes);
   tfree(info->blkUnits);
-  
+
   for (int32_t i = 0; i < FLD_TYPE_MAX; ++i) {
     for (uint32_t f = 0; f < info->fields[i].num; ++f) {
       filterFreeField(&info->fields[i].fields[f], i);
@@ -2784,7 +2785,7 @@ bool filterExecuteBasedOnStatisImpl(void *pinfo, int32_t numOfRows, int8_t** p,
         //} else {
           uint8_t optr = cunit->optr;
 
-          if (isNull(colData, cunit->dataType)) {
+          if (colDataIsNull((SColumnInfoData *)(cunit->colData), 0, i, NULL)) {
             (*p)[i] = optr == OP_TYPE_IS_NULL ? true : false;
           } else {
             if (optr == OP_TYPE_IS_NOT_NULL) {
@@ -2881,12 +2882,12 @@ static FORCE_INLINE bool filterExecuteImplIsNull(void *pinfo, int32_t numOfRows,
         (*p)[i] = 1;
       }else if( *(char*)colData == TSDB_DATA_TYPE_JSON){  // for json is null
         colData = POINTER_SHIFT(colData, CHAR_BYTES);
-        (*p)[i] = isNull(colData, info->cunits[uidx].dataType);
+        (*p)[i] = colDataIsNull((SColumnInfoData *)info->cunits[uidx].colData, 0, i, NULL);
       }else{
         (*p)[i] = 0;
       }
     }else{
-      (*p)[i] = ((colData == NULL) || isNull(colData, info->cunits[uidx].dataType));
+      (*p)[i] = ((colData == NULL) || colDataIsNull((SColumnInfoData *)info->cunits[uidx].colData, 0, i, NULL));
     }
     if ((*p)[i] == 0) {
       all = false;
@@ -2916,12 +2917,12 @@ static FORCE_INLINE bool filterExecuteImplNotNull(void *pinfo, int32_t numOfRows
         (*p)[i] = 0;
       }else if( *(char*)colData == TSDB_DATA_TYPE_JSON){   // for json is not null
         colData = POINTER_SHIFT(colData, CHAR_BYTES);
-        (*p)[i] = !isNull(colData, info->cunits[uidx].dataType);
+        (*p)[i] = !colDataIsNull((SColumnInfoData *)info->cunits[uidx].colData, 0, i, NULL);
       }else{    // for json->'key' is not null
         (*p)[i] = 1;
       }
     }else {
-      (*p)[i] = ((colData != NULL) && !isNull(colData, info->cunits[uidx].dataType));
+      (*p)[i] = ((colData != NULL) && !colDataIsNull((SColumnInfoData *)info->cunits[uidx].colData, 0, i, NULL));
     }
 
     if ((*p)[i] == 0) {
@@ -2952,7 +2953,7 @@ bool filterExecuteImplRange(void *pinfo, int32_t numOfRows, int8_t** p, SColumnD
   for (int32_t i = 0; i < numOfRows; ++i) {    
     void *colData = colDataGetData((SColumnInfoData *)info->cunits[0].colData, i);
 
-    if (colData == NULL || isNull(colData, info->cunits[0].dataType)) {
+    if (colData == NULL || colDataIsNull((SColumnInfoData *)info->cunits[0].colData, 0, i, NULL)) {
       all = false;
       continue;
     }
@@ -2982,7 +2983,7 @@ bool filterExecuteImplMisc(void *pinfo, int32_t numOfRows, int8_t** p, SColumnDa
   for (int32_t i = 0; i < numOfRows; ++i) {
     uint32_t uidx = info->groups[0].unitIdxs[0];
     void *colData = colDataGetData((SColumnInfoData *)info->cunits[uidx].colData, i);
-    if (colData == NULL || isNull(colData, info->cunits[uidx].dataType)) {
+    if (colData == NULL || colDataIsNull((SColumnInfoData *)info->cunits[uidx].colData, 0, i, NULL)) {
       (*p)[i] = 0;
       all = false;
       continue;
@@ -3039,7 +3040,7 @@ bool filterExecuteImpl(void *pinfo, int32_t numOfRows, int8_t** p, SColumnDataAg
         //} else {
           uint8_t optr = cunit->optr;
 
-          if (colData == NULL || isNull(colData, cunit->dataType)) {
+          if (colData == NULL || colDataIsNull((SColumnInfoData *)(cunit->colData), 0, i, NULL)) {
             (*p)[i] = optr == OP_TYPE_IS_NULL ? true : false;
           } else {
             if (optr == OP_TYPE_IS_NOT_NULL) {
@@ -3669,9 +3670,17 @@ _return:
 bool filterExecute(SFilterInfo *info, SSDataBlock *pSrc, int8_t** p, SColumnDataAgg *statis, int16_t numOfCols) {
   if (info->scalarMode) {
     SScalarParam output = {0};
-    FLT_ERR_RET(scalarCalculate(info->sclCtx.node, pSrc, &output));
+    SArray *pList = taosArrayInit(1, POINTER_BYTES);
+    taosArrayPush(pList, &pSrc);
+    
+    FLT_ERR_RET(scalarCalculate(info->sclCtx.node, pList, &output));
+
+    taosArrayDestroy(pList);
+
+    *p = output.orig.data;
+    output.orig.data = NULL;
 
-    *p = output.data;
+    sclFreeParam(&output);
 
     int8_t *r = output.data;
     for (int32_t i = 0; i < output.num; ++i) {
diff --git a/source/libs/scalar/src/scalar.c b/source/libs/scalar/src/scalar.c
index 7a07988479af022245c5930f5c8718fa462b1fda..0245226dfcdfdbd360ab1a6e18d20d95839abe1d 100644
--- a/source/libs/scalar/src/scalar.c
+++ b/source/libs/scalar/src/scalar.c
@@ -5,6 +5,7 @@
 #include "functionMgt.h"
 #include "sclvector.h"
 #include "sclInt.h"
+#include "tep.h"
 
 int32_t scalarGetOperatorParamNum(EOperatorType type) {
   if (OP_TYPE_IS_NULL == type || OP_TYPE_IS_NOT_NULL == type || OP_TYPE_IS_TRUE == type || OP_TYPE_IS_NOT_TRUE == type 
@@ -87,6 +88,26 @@ _return:
   SCL_RET(code);
 }
 
+FORCE_INLINE bool sclIsNull(SScalarParam* param, int32_t idx) {
+  if (param->dataInBlock) {
+    return colDataIsNull(param->orig.columnData, 0, idx, NULL);
+  }
+
+  return param->bitmap ? colDataIsNull_f(param->bitmap, idx) : false;
+}
+
+FORCE_INLINE void sclSetNull(SScalarParam* param, int32_t idx) {
+  if (NULL == param->bitmap) {
+    param->bitmap = calloc(BitmapLen(param->num), sizeof(char));
+    if (NULL == param->bitmap) {
+      sclError("calloc %d failed", param->num);
+      return;
+    }
+  }
+  
+  colDataSetNull_f(param->bitmap, idx);
+}
+
 
 void sclFreeRes(SHashObj *res) {
   SScalarParam *p = NULL;
@@ -95,7 +116,7 @@ void sclFreeRes(SHashObj *res) {
     p = (SScalarParam *)pIter;
 
     if (p) {
-      tfree(p->data);
+      sclFreeParam(p);
     }
     
     pIter = taosHashIterate(res, pIter);
@@ -104,19 +125,54 @@ void sclFreeRes(SHashObj *res) {
   taosHashCleanup(res);
 }
 
+void sclFreeParamNoData(SScalarParam *param) {
+  tfree(param->bitmap);
+}
+
+
 void sclFreeParam(SScalarParam *param) {
-  tfree(param->data);
+  sclFreeParamNoData(param);
+  
+  if (!param->dataInBlock) {
+    if (SCL_DATA_TYPE_DUMMY_HASH == param->type) {
+      taosHashCleanup((SHashObj *)param->orig.data);
+    } else {
+      tfree(param->orig.data);
+    }
+  }
+}
+
+
+int32_t sclCopyValueNodeValue(SValueNode *pNode, void **res) {
+  if (TSDB_DATA_TYPE_NULL == pNode->node.resType.type) {
+    return TSDB_CODE_SUCCESS;
+  }
+  
+  *res = malloc(pNode->node.resType.bytes);
+  if (NULL == (*res)) {
+    sclError("malloc %d failed", pNode->node.resType.bytes);
+    SCL_ERR_RET(TSDB_CODE_QRY_OUT_OF_MEMORY);
+  }
+
+  memcpy(*res, nodesGetValueFromNode(pNode), pNode->node.resType.bytes);
+
+  return TSDB_CODE_SUCCESS;
 }
 
 int32_t sclInitParam(SNode* node, SScalarParam *param, SScalarCtx *ctx, int32_t *rowNum) {
   switch (nodeType(node)) {
     case QUERY_NODE_VALUE: {
       SValueNode *valueNode = (SValueNode *)node;
+      //SCL_ERR_RET(sclCopyValueNodeValue(valueNode, &param->data));
       param->data = nodesGetValueFromNode(valueNode);
+      param->orig.data = param->data;
       param->num = 1;
       param->type = valueNode->node.resType.type;
       param->bytes = valueNode->node.resType.bytes;
-      param->colData = false;
+      if (TSDB_DATA_TYPE_NULL == param->type) {
+        sclSetNull(param, 0);
+      }
+      param->dataInBlock = false;
       
       break;
     }
@@ -128,34 +184,44 @@ int32_t sclInitParam(SNode* node, SScalarParam *param, SScalarCtx *ctx, int32_t
       }
 
       SCL_ERR_RET(scalarGenerateSetFromList(&param->data, node, nodeList->dataType.type));
+      param->orig.data = param->data;
       param->num = 1;
       param->type = SCL_DATA_TYPE_DUMMY_HASH;
-      param->colData = false;
-      
+      param->dataInBlock = false;
+
+      if (taosHashPut(ctx->pRes, &node, POINTER_BYTES, param, sizeof(*param))) {
+        taosHashCleanup(param->orig.data);
+        param->orig.data = NULL;
+        sclError("taosHashPut nodeList failed, size:%d", (int32_t)sizeof(*param));
+        return TSDB_CODE_QRY_OUT_OF_MEMORY;
+      }   
       break;
     }
     case QUERY_NODE_COLUMN: {
-      if (NULL == ctx) {
-        sclError("invalid node type for constant calculating, type:%d, ctx:%p", nodeType(node), ctx);
+      if (NULL == ctx->pBlockList) {
+        sclError("invalid node type for constant calculating, type:%d, src:%p", nodeType(node), ctx->pBlockList);
         SCL_ERR_RET(TSDB_CODE_QRY_APP_ERROR);
       }
       
       SColumnNode *ref = (SColumnNode *)node;
-      if (ref->slotId >= taosArrayGetSize(ctx->pSrc->pDataBlock)) {
-        sclError("column ref slotId is too big, slodId:%d, dataBlockSize:%d", ref->slotId, (int32_t)taosArrayGetSize(ctx->pSrc->pDataBlock));
+      if (ref->dataBlockId >= taosArrayGetSize(ctx->pBlockList)) {
+        sclError("column tupleId is too big, tupleId:%d, dataBlockNum:%d", ref->dataBlockId, (int32_t)taosArrayGetSize(ctx->pBlockList));
         SCL_ERR_RET(TSDB_CODE_QRY_INVALID_INPUT);
       }
 
-      SColumnInfoData *columnData = (SColumnInfoData *)taosArrayGet(ctx->pSrc->pDataBlock, ref->slotId);
-      if (IS_VAR_DATA_TYPE(columnData->info.type)) {
-        param->data = columnData;        
-        param->colData = true;
-      } else {
-        param->data = columnData->pData;        
-        param->colData = false;
+      SSDataBlock *block = *(SSDataBlock **)taosArrayGet(ctx->pBlockList, ref->dataBlockId);
+      
+      if (NULL == block || ref->slotId >= taosArrayGetSize(block->pDataBlock)) {
+        sclError("column slotId is too big, slodId:%d, dataBlockSize:%d", ref->slotId, (int32_t)taosArrayGetSize(block->pDataBlock));
+        SCL_ERR_RET(TSDB_CODE_QRY_INVALID_INPUT);
       }
+
+      SColumnInfoData *columnData = (SColumnInfoData *)taosArrayGet(block->pDataBlock, ref->slotId);
+      param->data = NULL;
+      param->orig.columnData = columnData;
+      param->dataInBlock = true;
       
-      param->num = ctx->pSrc->info.rows;
+      param->num = block->info.rows;
       param->type = columnData->info.type;
       param->bytes = columnData->info.bytes;
       
@@ -163,11 +229,6 @@ int32_t sclInitParam(SNode* node, SScalarParam *param, SScalarCtx *ctx, int32_t
     }
     case QUERY_NODE_LOGIC_CONDITION:
     case QUERY_NODE_OPERATOR: {
-      if (NULL == ctx) {
-        sclError("invalid node type for constant calculating, type:%d, ctx:%p", nodeType(node), ctx);
-        SCL_ERR_RET(TSDB_CODE_QRY_APP_ERROR);
-      }
-
       SScalarParam *res = (SScalarParam *)taosHashGet(ctx->pRes, &node, POINTER_BYTES);
       if (NULL == res) {
         sclError("no result for node, type:%d, node:%p", nodeType(node), node);
@@ -192,20 +253,26 @@ int32_t sclInitParam(SNode* node, SScalarParam *param, SScalarCtx *ctx, int32_t
   return TSDB_CODE_SUCCESS;
 }
 
-int32_t sclParamMoveNext(SScalarParam *params, int32_t num) {
+int32_t sclMoveParamListData(SScalarParam *params, int32_t listNum, int32_t idx) {
   SScalarParam *param = NULL;
   
-  for (int32_t i = 0; i < num; ++i) {
+  for (int32_t i = 0; i < listNum; ++i) {
     param = params + i;
     
     if (1 == param->num) {
       continue;
     }
 
-    if (IS_VAR_DATA_TYPE(param->type)) {
-      param->data = (char *)(param->data) + varDataTLen(param->data);
+    if (param->dataInBlock) {
+      param->data = colDataGetData(param->orig.columnData, idx);
+    } else if (idx) {
+      if (IS_VAR_DATA_TYPE(param->type)) {
+        param->data = (char *)(param->data) + varDataTLen(param->data);
+      } else {
+        param->data = (char *)(param->data) + tDataTypes[param->type].bytes;
+      }
     } else {
-      param->data = (char *)(param->data) + tDataTypes[param->type].bytes;
+      param->data = param->orig.data;
     }
   }
 
@@ -281,8 +348,7 @@ int32_t sclExecFuncion(SFunctionNode *node, SScalarCtx *ctx, SScalarParam *outpu
   SScalarFuncExecFuncs ffpSet = {0};
   int32_t code = fmGetScalarFuncExecFuncs(node->funcId, &ffpSet);
   if (code) {
-    sclError(
-"fmGetFuncExecFuncs failed, funcId:%d, code:%s", node->funcId, tstrerror(code));
+    sclError("fmGetFuncExecFuncs failed, funcId:%d, code:%s", node->funcId, tstrerror(code));
     SCL_ERR_RET(code);
   }
 
@@ -296,24 +362,27 @@ int32_t sclExecFuncion(SFunctionNode *node, SScalarCtx *ctx, SScalarParam *outpu
     sclError("calloc %d failed", (int32_t)(rowNum * sizeof(tDataTypes[output->type].bytes)));
     SCL_ERR_JRET(TSDB_CODE_QRY_OUT_OF_MEMORY);
   }
+  output->orig.data = output->data;
 
   for (int32_t i = 0; i < rowNum; ++i) {
+    sclMoveParamListData(output, 1, i);
+    sclMoveParamListData(params, node->pParameterList->length, i);
+
     code = (*ffpSet.process)(params, node->pParameterList->length, output);
     if (code) {
-      sclError(
-"scalar function exec failed, funcId:%d, code:%s", node->funcId, tstrerror(code));
+      sclError("scalar function exec failed, funcId:%d, code:%s", node->funcId, tstrerror(code));
       SCL_ERR_JRET(code);    
     }
-
-    sclParamMoveNext(output, 1);
-    sclParamMoveNext(params, node->pParameterList->length);
   }
 
-  return TSDB_CODE_SUCCESS;
-
 _return:
 
+  for (int32_t i = 0; i < node->pParameterList->length; ++i) {
+    sclFreeParamNoData(params + i);
+  }
+
   tfree(params);
+  
   SCL_RET(code);
 }
 
@@ -348,12 +417,14 @@ int32_t sclExecLogic(SLogicConditionNode *node, SScalarCtx *ctx, SScalarParam *o
     sclError("calloc %d failed", (int32_t)(rowNum * sizeof(bool)));
     SCL_ERR_JRET(TSDB_CODE_QRY_OUT_OF_MEMORY);
   }
+  output->orig.data = output->data;
 
-  void *data = output->data;
-  
   bool value = false;
 
   for (int32_t i = 0; i < rowNum; ++i) {
+    sclMoveParamListData(output, 1, i);
+    sclMoveParamListData(params, node->pParameterList->length, i);
+  
     for (int32_t m = 0; m < node->pParameterList->length; ++m) {
       GET_TYPED_DATA(value, bool, params[m].type, params[m].data);
       
@@ -367,17 +438,14 @@ int32_t sclExecLogic(SLogicConditionNode *node, SScalarCtx *ctx, SScalarParam *o
     }
 
     *(bool *)output->data = value;
-
-    sclParamMoveNext(output, 1);    
-    sclParamMoveNext(params, node->pParameterList->length);
   }
 
-  output->data = data;
-
-  return TSDB_CODE_SUCCESS;
-
 _return:
 
+  for (int32_t i = 0; i < node->pParameterList->length; ++i) {
+    sclFreeParamNoData(params + i);
+  }
+
   tfree(params);
   SCL_RET(code);
 }
@@ -397,6 +465,7 @@ int32_t sclExecOperator(SOperatorNode *node, SScalarCtx *ctx, SScalarParam *outp
     sclError("calloc %d failed", (int32_t)rowNum * tDataTypes[output->type].bytes);
     SCL_ERR_JRET(TSDB_CODE_QRY_OUT_OF_MEMORY);
   }
+  output->orig.data = output->data;
 
   _bin_scalar_fn_t OperatorFn = getBinScalarOperatorFn(node->opType);
 
@@ -404,23 +473,27 @@ int32_t sclExecOperator(SOperatorNode *node, SScalarCtx *ctx, SScalarParam *outp
   SScalarParam* pLeft = &params[0];
   SScalarParam* pRight = paramNum > 1 ? &params[1] : NULL;
   
-  OperatorFn(pLeft, pRight, output->data, TSDB_ORDER_ASC);
-
-  return TSDB_CODE_SUCCESS;
+  OperatorFn(pLeft, pRight, output, TSDB_ORDER_ASC);
 
 _return:
 
+
+  for (int32_t i = 0; i < paramNum; ++i) {
+    sclFreeParamNoData(params + i);
+  }
+
   tfree(params);
+  
   SCL_RET(code);
 }
 
 
-EDealRes sclRewriteFunction(SNode** pNode, void* pContext) {
+EDealRes sclRewriteFunction(SNode** pNode, SScalarCtx *ctx) {
   SFunctionNode *node = (SFunctionNode *)*pNode;
   SScalarParam output = {0};
   
-  *(int32_t *)pContext = sclExecFuncion(node, NULL, &output);
-  if (*(int32_t *)pContext) {
+  ctx->code = sclExecFuncion(node, ctx, &output);
+  if (ctx->code) {
     return DEAL_RES_ERROR;
   }
 
@@ -428,7 +501,7 @@ EDealRes sclRewriteFunction(SNode** pNode, void* pContext) {
   if (NULL == res) {
     sclError("make value node failed");
     sclFreeParam(&output);
-    *(int32_t *)pContext = TSDB_CODE_QRY_OUT_OF_MEMORY;
+    ctx->code = TSDB_CODE_QRY_OUT_OF_MEMORY;
     return DEAL_RES_ERROR;
   }
 
@@ -449,12 +522,12 @@ EDealRes sclRewriteFunction(SNode** pNode, void* pContext) {
   return DEAL_RES_CONTINUE;
 }
 
-EDealRes sclRewriteLogic(SNode** pNode, void* pContext) {
+EDealRes sclRewriteLogic(SNode** pNode, SScalarCtx *ctx) {
   SLogicConditionNode *node = (SLogicConditionNode *)*pNode;
   SScalarParam output = {0};
 
-  *(int32_t *)pContext = sclExecLogic(node, NULL, &output);
-  if (*(int32_t *)pContext) {
+  ctx->code = sclExecLogic(node, ctx, &output);
+  if (ctx->code) {
     return DEAL_RES_ERROR;
   }
 
@@ -462,7 +535,7 @@ EDealRes sclRewriteLogic(SNode** pNode, void* pContext) {
   if (NULL == res) {
     sclError("make value node failed");
     sclFreeParam(&output);    
-    *(int32_t *)pContext = TSDB_CODE_QRY_OUT_OF_MEMORY;
+    ctx->code = TSDB_CODE_QRY_OUT_OF_MEMORY;
     return DEAL_RES_ERROR;
   }
 
@@ -483,12 +556,12 @@ EDealRes sclRewriteLogic(SNode** pNode, void* pContext) {
   return DEAL_RES_CONTINUE;
 }
 
-EDealRes sclRewriteOperator(SNode** pNode, void* pContext) {
+EDealRes sclRewriteOperator(SNode** pNode, SScalarCtx *ctx) {
   SOperatorNode *node = (SOperatorNode *)*pNode;
   SScalarParam output = {0};
 
-  *(int32_t *)pContext = sclExecOperator(node, NULL, &output);
-  if (*(int32_t *)pContext) {
+  ctx->code = sclExecOperator(node, ctx, &output);
+  if (ctx->code) {
     return DEAL_RES_ERROR;
   }
 
@@ -496,7 +569,7 @@ EDealRes sclRewriteOperator(SNode** pNode, void* pContext) {
   if (NULL == res) {
     sclError("make value node failed");    
     sclFreeParam(&output);    
-    *(int32_t *)pContext = TSDB_CODE_QRY_OUT_OF_MEMORY;
+    ctx->code = TSDB_CODE_QRY_OUT_OF_MEMORY;
     return DEAL_RES_ERROR;
   }
 
@@ -523,28 +596,29 @@ EDealRes sclConstantsRewriter(SNode** pNode, void* pContext) {
     return DEAL_RES_CONTINUE;
   }
 
+  SScalarCtx *ctx = (SScalarCtx *)pContext;
+
   if (QUERY_NODE_FUNCTION == nodeType(*pNode)) {
-    return sclRewriteFunction(pNode, pContext);
+    return sclRewriteFunction(pNode, ctx);
   }
 
   if (QUERY_NODE_LOGIC_CONDITION == nodeType(*pNode)) {
-    return sclRewriteLogic(pNode, pContext);
+    return sclRewriteLogic(pNode, ctx);
   }
 
   if (QUERY_NODE_OPERATOR == nodeType(*pNode)) {
-    return sclRewriteOperator(pNode, pContext);
+    return sclRewriteOperator(pNode, ctx);
   }  
   
   sclError("invalid node type for calculating constants, type:%d", nodeType(*pNode));
-  
-  *(int32_t *)pContext = TSDB_CODE_QRY_INVALID_INPUT;
+
+  ctx->code = TSDB_CODE_QRY_INVALID_INPUT;
   
   return DEAL_RES_ERROR;
 }
 
 
-EDealRes sclWalkFunction(SNode* pNode, void* pContext) {
-  SScalarCtx *ctx = (SScalarCtx *)pContext;
+EDealRes sclWalkFunction(SNode* pNode, SScalarCtx *ctx) {
   SFunctionNode *node = (SFunctionNode *)pNode;
   SScalarParam output = {0};
   
@@ -562,8 +636,7 @@ EDealRes sclWalkFunction(SNode* pNode, void* pContext) {
 }
 
 
-EDealRes sclWalkLogic(SNode* pNode, void* pContext) {
-  SScalarCtx *ctx = (SScalarCtx *)pContext;
+EDealRes sclWalkLogic(SNode* pNode, SScalarCtx *ctx) {
   SLogicConditionNode *node = (SLogicConditionNode *)pNode;
   SScalarParam output = {0};
   
@@ -581,8 +654,7 @@ EDealRes sclWalkLogic(SNode* pNode, void* pContext) {
 }
 
 
-EDealRes sclWalkOperator(SNode* pNode, void* pContext) {
-  SScalarCtx *ctx = (SScalarCtx *)pContext;
+EDealRes sclWalkOperator(SNode* pNode, SScalarCtx *ctx) {
   SOperatorNode *node = (SOperatorNode *)pNode;
   SScalarParam output = {0};
   
@@ -599,27 +671,69 @@ EDealRes sclWalkOperator(SNode* pNode, void* pContext) {
   return DEAL_RES_CONTINUE;
 }
 
+EDealRes sclWalkTarget(SNode* pNode, SScalarCtx *ctx) {
+  STargetNode *target = (STargetNode *)pNode;
+  
+  if (target->dataBlockId >= taosArrayGetSize(ctx->pBlockList)) {
+    sclError("target tupleId is too big, tupleId:%d, dataBlockNum:%d", target->dataBlockId, (int32_t)taosArrayGetSize(ctx->pBlockList));
+    ctx->code = TSDB_CODE_QRY_INVALID_INPUT;
+    return DEAL_RES_ERROR;
+  }
+
+  SSDataBlock *block = *(SSDataBlock **)taosArrayGet(ctx->pBlockList, target->dataBlockId);
+  if (target->slotId >= taosArrayGetSize(block->pDataBlock)) {
+    sclError("target slot not exist, dataBlockId:%d, slotId:%d, dataBlockNum:%d", target->dataBlockId, target->slotId, (int32_t)taosArrayGetSize(block->pDataBlock));
+    ctx->code = TSDB_CODE_QRY_INVALID_INPUT;
+    return DEAL_RES_ERROR;
+  }
+
+  SColumnInfoData *col = taosArrayGet(block->pDataBlock, target->slotId);
+  
+  SScalarParam *res = (SScalarParam *)taosHashGet(ctx->pRes, (void *)&target->pExpr, POINTER_BYTES);
+  if (NULL == res) {
+    sclError("no valid res in hash, node:%p, type:%d", target->pExpr, nodeType(target->pExpr));
+    ctx->code = TSDB_CODE_QRY_APP_ERROR;
+    return DEAL_RES_ERROR;
+  }
+  
+  for (int32_t i = 0; i < res->num; ++i) {
+    sclMoveParamListData(res, 1, i);
+
+    colDataAppend(col, i, res->data, sclIsNull(res, i));
+  }
+
+  sclFreeParam(res);
+
+  taosHashRemove(ctx->pRes, (void *)&target->pExpr, POINTER_BYTES);
+
+  return DEAL_RES_CONTINUE;
+}
+
 
 EDealRes sclCalcWalker(SNode* pNode, void* pContext) {
   if (QUERY_NODE_VALUE == nodeType(pNode) || QUERY_NODE_NODE_LIST == nodeType(pNode) || QUERY_NODE_COLUMN == nodeType(pNode)) {
     return DEAL_RES_CONTINUE;
   }
+
+  SScalarCtx *ctx = (SScalarCtx *)pContext;
     
   if (QUERY_NODE_FUNCTION == nodeType(pNode)) {
-    return sclWalkFunction(pNode, pContext);
+    return sclWalkFunction(pNode, ctx);
   }
 
   if (QUERY_NODE_LOGIC_CONDITION == nodeType(pNode)) {
-    return sclWalkLogic(pNode, pContext);
+    return sclWalkLogic(pNode, ctx);
   }
 
   if (QUERY_NODE_OPERATOR == nodeType(pNode)) {
-    return sclWalkOperator(pNode, pContext);
+    return sclWalkOperator(pNode, ctx);
   }
 
-  sclError("invalid node type for scalar calculating, type:%d", nodeType(pNode));
+  if (QUERY_NODE_TARGET == nodeType(pNode)) {
+    return sclWalkTarget(pNode, ctx);
+  }
 
-  SScalarCtx *ctx = (SScalarCtx *)pContext;
+  sclError("invalid node type for scalar calculating, type:%d", nodeType(pNode));
   
   ctx->code = TSDB_CODE_QRY_INVALID_INPUT;
   
@@ -634,26 +748,33 @@ int32_t scalarCalculateConstants(SNode *pNode, SNode **pRes) {
   }
 
   int32_t code = 0;
+  SScalarCtx ctx = {0};
+  ctx.pRes = taosHashInit(SCL_DEFAULT_OP_NUM, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BINARY), false, HASH_NO_LOCK);
+  if (NULL == ctx.pRes) {
+    sclError("taosHashInit failed, num:%d", SCL_DEFAULT_OP_NUM);
+    SCL_ERR_RET(TSDB_CODE_QRY_OUT_OF_MEMORY);
+  }
   
-  nodesRewriteNodePostOrder(&pNode, sclConstantsRewriter, (void *)&code);
+  nodesRewriteNodePostOrder(&pNode, sclConstantsRewriter, (void *)&ctx);
 
-  if (code) {
-    nodesDestroyNode(pNode);
-    SCL_ERR_RET(code);
-  }
+  SCL_ERR_JRET(ctx.code);
 
   *pRes = pNode;
 
-  SCL_RET(code);
+_return:
+  
+  sclFreeRes(ctx.pRes);
+
+  return code;
 }
 
-int32_t scalarCalculate(SNode *pNode, SSDataBlock *pSrc, SScalarParam *pDst) {
-  if (NULL == pNode || NULL == pSrc || NULL == pDst) {
+int32_t scalarCalculate(SNode *pNode, SArray *pBlockList, SScalarParam *pDst) {
+  if (NULL == pNode || NULL == pBlockList) {
     SCL_ERR_RET(TSDB_CODE_QRY_INVALID_INPUT);
   }
 
   int32_t code = 0;
-  SScalarCtx ctx = {.code = 0, .pSrc = pSrc};
+  SScalarCtx ctx = {.code = 0, .pBlockList = pBlockList};
   
   ctx.pRes = taosHashInit(SCL_DEFAULT_OP_NUM, taosGetDefaultHashFunction(TSDB_DATA_TYPE_BINARY), false, HASH_NO_LOCK);
   if (NULL == ctx.pRes) {
@@ -663,23 +784,28 @@ int32_t scalarCalculate(SNode *pNode, SSDataBlock *pSrc, SScalarParam *pDst) {
   
   nodesWalkNodePostOrder(pNode, sclCalcWalker, (void *)&ctx);
 
-  if (ctx.code) {
-    nodesDestroyNode(pNode);
-    sclFreeRes(ctx.pRes);
-    SCL_ERR_RET(ctx.code);
-  }
+  SCL_ERR_JRET(ctx.code);
 
-  SScalarParam *res = (SScalarParam *)taosHashGet(ctx.pRes, (void *)&pNode, POINTER_BYTES);
-  if (NULL == res) {
-    sclError("no res for calculating, node:%p, type:%d", pNode, nodeType(pNode));
-    SCL_ERR_RET(TSDB_CODE_QRY_APP_ERROR);
+  if (pDst) {
+    SScalarParam *res = (SScalarParam *)taosHashGet(ctx.pRes, (void *)&pNode, POINTER_BYTES);
+    if (NULL == res) {
+      sclError("no valid res in hash, node:%p, type:%d", pNode, nodeType(pNode));
+      SCL_ERR_JRET(TSDB_CODE_QRY_APP_ERROR);
+    }
+    
+    sclMoveParamListData(res, 1, 0);
+    
+    *pDst = *res;
+    
+    taosHashRemove(ctx.pRes, (void *)&pNode, POINTER_BYTES);
   }
-  
-  *pDst = *res;
 
-  nodesDestroyNode(pNode);
+_return:
+  
+  //nodesDestroyNode(pNode);
+  sclFreeRes(ctx.pRes);
 
-  return TSDB_CODE_SUCCESS;
+  return code;
 }
 
 
diff --git a/source/libs/scalar/src/sclvector.c b/source/libs/scalar/src/sclvector.c
index 26ffeb2d601bd52a08802f697982a7d14f2a5380..3c431ff33fde08326adf1797a183452197bc0505 100644
--- a/source/libs/scalar/src/sclvector.c
+++ b/source/libs/scalar/src/sclvector.c
@@ -261,15 +261,89 @@ _getValueAddr_fn_t getVectorValueAddrFn(int32_t srcType) {
     return p;
 }
 
+static FORCE_INLINE void varToSigned(char *buf, SScalarParam* pOut, int32_t outType) {
+  int64_t value = strtoll(buf, NULL, 10);
+  SET_TYPED_DATA(pOut->data, outType, value);
+}
+
+static FORCE_INLINE void varToUnsigned(char *buf, SScalarParam* pOut, int32_t outType) {
+  uint64_t value = strtoull(buf, NULL, 10);
+  SET_TYPED_DATA(pOut->data, outType, value);
+}
+
+static FORCE_INLINE void varToFloat(char *buf, SScalarParam* pOut, int32_t outType) {
+  double value = strtod(buf, NULL);
+  SET_TYPED_DATA(pOut->data, outType, value);
+}
+
+
+int32_t vectorConvertFromVarData(SScalarParam* pIn, SScalarParam* pOut, int32_t inType, int32_t outType) {
+  int32_t bufSize = 0;
+  char *tmp = NULL;
+  _bufConverteFunc func = NULL;
+
+  if (IS_SIGNED_NUMERIC_TYPE(outType) || TSDB_DATA_TYPE_TIMESTAMP == outType || TSDB_DATA_TYPE_BOOL == outType) {
+    func = varToSigned;
+  } else if (IS_UNSIGNED_NUMERIC_TYPE(outType)) {
+    func = varToUnsigned;
+  } else if (IS_FLOAT_TYPE(outType)) {
+    func = varToFloat;
+  } else {
+    sclError("invalid convert outType:%d", outType);
+    return TSDB_CODE_QRY_APP_ERROR;
+  }
+  
+  for (int32_t i = 0; i < pIn->num; ++i) {
+    sclMoveParamListData(pIn, 1, i);
+    sclMoveParamListData(pOut, 1, i);
+    
+    if (sclIsNull(pIn, i)) {
+      sclSetNull(pOut, i);
+      continue;
+    }
+
+    if (TSDB_DATA_TYPE_BINARY == inType) {
+      if (varDataLen(pIn->data) >= bufSize) {
+        bufSize = varDataLen(pIn->data) + 1;
+        tmp = realloc(tmp, bufSize);
+      }
+
+      memcpy(tmp, varDataVal(pIn->data), varDataLen(pIn->data));
+      tmp[varDataLen(pIn->data)] = 0;
+    } else {
+      if (varDataLen(pIn->data) * TSDB_NCHAR_SIZE >= bufSize) {
+        bufSize = varDataLen(pIn->data) * TSDB_NCHAR_SIZE + 1;
+        tmp = realloc(tmp, bufSize);
+      }
+      
+      int len = taosUcs4ToMbs(varDataVal(pIn->data), varDataLen(pIn->data), tmp);
+      if (len < 0){
+        sclError("castConvert taosUcs4ToMbs error 1");
+        tfree(tmp);
+        return TSDB_CODE_QRY_APP_ERROR;
+      }
+      
+      tmp[len] = 0;
+    }
+    
+    (*func)(tmp, pOut, outType);
+  }
+  
+  tfree(tmp);
+
+  return TSDB_CODE_SUCCESS;
+}
 
 int32_t vectorConvertImpl(SScalarParam* pIn, SScalarParam* pOut) {
   int16_t inType = pIn->type; 
   int16_t inBytes = pIn->bytes;
-  char *input = pIn->data; 
   int16_t outType = pOut->type; 
   int16_t outBytes = pOut->bytes; 
-  char *output = pOut->data;
 
+  if (inType == TSDB_DATA_TYPE_BINARY || inType == TSDB_DATA_TYPE_NCHAR) {
+    return vectorConvertFromVarData(pIn, pOut, inType, outType);
+  }
+  
   switch (outType) {
     case TSDB_DATA_TYPE_BOOL:
     case TSDB_DATA_TYPE_TINYINT:
@@ -277,239 +351,55 @@ int32_t vectorConvertImpl(SScalarParam* pIn, SScalarParam* pOut) {
     case TSDB_DATA_TYPE_INT:
     case TSDB_DATA_TYPE_BIGINT:
     case TSDB_DATA_TYPE_TIMESTAMP:    
-      if (inType == TSDB_DATA_TYPE_BINARY) {
-        int32_t bufSize = varDataLen(input) + 1;
-        char *tmp = malloc(bufSize);
-        if (NULL == tmp) {
-          sclError("malloc %d failed", bufSize);
-          return TSDB_CODE_QRY_OUT_OF_MEMORY;
-        }
-        
-        for (int32_t i = 0; i < pIn->num; ++i) {
-          if (isNull(input, inType)) {
-            assignVal(output, getNullValue(outType), 0, outType);
-          } else {
-            if (varDataLen(input) >= bufSize) {
-              bufSize = varDataLen(input) + 1;
-              tmp = realloc(tmp, bufSize);
-            }
-            
-            memcpy(tmp, varDataVal(input), varDataLen(input));
-            tmp[varDataLen(input)] = 0;
-            
-            int64_t value = strtoll(tmp, NULL, 10);
-            SET_TYPED_DATA(output, outType, value);
-          }
-          
-          input += varDataLen(input) + VARSTR_HEADER_SIZE;
-          output += tDataTypes[outType].bytes;
-        }
-        
-        tfree(tmp);
-      } else if (inType == TSDB_DATA_TYPE_NCHAR) {      
-        int32_t bufSize = varDataLen(input) * TSDB_NCHAR_SIZE + 1;
-        char *tmp = calloc(1, bufSize);
-        if (NULL == tmp) {
-          sclError("calloc %d failed", bufSize);
-          return TSDB_CODE_QRY_OUT_OF_MEMORY;
-        }
+      for (int32_t i = 0; i < pIn->num; ++i) {
+        sclMoveParamListData(pIn, 1, i);
+        sclMoveParamListData(pOut, 1, i);
         
-        for (int32_t i = 0; i < pIn->num; ++i) {
-          if (isNull(input, inType)) {
-            assignVal(output, getNullValue(outType), 0, outType);
-          } else {
-            if (varDataLen(input)* TSDB_NCHAR_SIZE >= bufSize) {
-              bufSize = varDataLen(input) * TSDB_NCHAR_SIZE + 1;
-              tmp = realloc(tmp, bufSize);
-            }
-          
-            int len = taosUcs4ToMbs(varDataVal(input), varDataLen(input), tmp);
-            if (len < 0){
-              sclError("castConvert taosUcs4ToMbs error 1");
-              tfree(tmp);
-              return TSDB_CODE_QRY_APP_ERROR;
-            }
-            
-            tmp[len] = 0;
-            int64_t value = strtoll(tmp, NULL, 10);
-            SET_TYPED_DATA(output, outType, value);
-          }
-
-          input += varDataLen(input) + VARSTR_HEADER_SIZE;
-          output += tDataTypes[outType].bytes;
+        if (sclIsNull(pIn, i)) {
+          sclSetNull(pOut, i);
+          continue;
         }
+
+        int64_t value = 0;
         
-        tfree(tmp);
-      } else {
-        for (int32_t i = 0; i < pIn->num; ++i) {
-          int64_t value = 0;
-          GET_TYPED_DATA(value, int64_t, inType, input);
-          SET_TYPED_DATA(output, outType, value);
-
-          input += tDataTypes[inType].bytes;
-          output += tDataTypes[outType].bytes;
-        }
+        GET_TYPED_DATA(value, int64_t, inType, pIn->data);
+        SET_TYPED_DATA(pOut->data, outType, value);
       }
       break;
     case TSDB_DATA_TYPE_UTINYINT:  
     case TSDB_DATA_TYPE_USMALLINT:
     case TSDB_DATA_TYPE_UINT:
     case TSDB_DATA_TYPE_UBIGINT:
-      if (inType == TSDB_DATA_TYPE_BINARY) {
-        int32_t bufSize = varDataLen(input) + 1;
-        char *tmp = malloc(bufSize);
-        if (NULL == tmp) {
-          sclError("malloc %d failed", bufSize);
-          return TSDB_CODE_QRY_OUT_OF_MEMORY;
-        }
-        
-        for (int32_t i = 0; i < pIn->num; ++i) {
-          if (isNull(input, inType)) {
-            assignVal(output, getNullValue(outType), 0, outType);
-          } else {
-            if (varDataLen(input) >= bufSize) {
-              bufSize = varDataLen(input) + 1;
-              tmp = realloc(tmp, bufSize);
-            }
-            
-            memcpy(tmp, varDataVal(input), varDataLen(input));
-            tmp[varDataLen(input)] = 0;
-            uint64_t value = strtoull(tmp, NULL, 10);
-            SET_TYPED_DATA(output, outType, value);
-          }
-          
-          input += varDataLen(input) + VARSTR_HEADER_SIZE;
-          output += tDataTypes[outType].bytes;
-        }
+      for (int32_t i = 0; i < pIn->num; ++i) {
+        sclMoveParamListData(pIn, 1, i);
+        sclMoveParamListData(pOut, 1, i);
         
-        tfree(tmp);
-      } else if (inType == TSDB_DATA_TYPE_NCHAR) {      
-        int32_t bufSize = varDataLen(input) * TSDB_NCHAR_SIZE + 1;
-        char *tmp = calloc(1, bufSize);
-        if (NULL == tmp) {
-          sclError("calloc %d failed", bufSize);
-          return TSDB_CODE_QRY_OUT_OF_MEMORY;
+        if (sclIsNull(pIn, i)) {
+          sclSetNull(pOut, i);
+          continue;
         }
         
-        for (int32_t i = 0; i < pIn->num; ++i) {
-          if (isNull(input, inType)) {
-            assignVal(output, getNullValue(outType), 0, outType);
-          } else {
-            if (varDataLen(input)* TSDB_NCHAR_SIZE >= bufSize) {
-              bufSize = varDataLen(input) * TSDB_NCHAR_SIZE + 1;
-              tmp = realloc(tmp, bufSize);
-            }
-          
-            int len = taosUcs4ToMbs(varDataVal(input), varDataLen(input), tmp);
-            if (len < 0){
-              sclError("castConvert taosUcs4ToMbs error 1");
-              tfree(tmp);
-              return TSDB_CODE_QRY_APP_ERROR;
-            }
-            
-            tmp[len] = 0;
-            uint64_t value = strtoull(tmp, NULL, 10);
-            SET_TYPED_DATA(output, outType, value);
-          }
-
-          input += varDataLen(input) + VARSTR_HEADER_SIZE;
-          output += tDataTypes[outType].bytes;
-        }
-        
-        tfree(tmp);
-      } else {      
-        for (int32_t i = 0; i < pIn->num; ++i) {
-          if (isNull(input, inType)) {
-            assignVal(output, getNullValue(outType), 0, outType);
-          } else {
-            uint64_t value = 0;
-            GET_TYPED_DATA(value, uint64_t, inType, input);
-            SET_TYPED_DATA(output, outType, value);
-          }
-
-          input += tDataTypes[inType].bytes;
-          output += tDataTypes[outType].bytes;
-        }
+        uint64_t value = 0;
+
+        GET_TYPED_DATA(value, uint64_t, inType, pIn->data);
+        SET_TYPED_DATA(pOut->data, outType, value);
       }
       break;
     case TSDB_DATA_TYPE_FLOAT:
     case TSDB_DATA_TYPE_DOUBLE:
-      if (inType == TSDB_DATA_TYPE_BINARY) {
-        int32_t bufSize = varDataLen(input) + 1;
-        char *tmp = malloc(bufSize);
-        if (NULL == tmp) {
-          sclError("malloc %d failed", bufSize);
-          return TSDB_CODE_QRY_OUT_OF_MEMORY;
-        }
+      for (int32_t i = 0; i < pIn->num; ++i) {
+        sclMoveParamListData(pIn, 1, i);
+        sclMoveParamListData(pOut, 1, i);
         
-        for (int32_t i = 0; i < pIn->num; ++i) {
-          if (isNull(input, inType)) {
-            assignVal(output, getNullValue(outType), 0, outType);
-          } else {
-            if (varDataLen(input) >= bufSize) {
-              bufSize = varDataLen(input) + 1;
-              tmp = realloc(tmp, bufSize);
-            }
-            
-            memcpy(tmp, varDataVal(input), varDataLen(input));
-            tmp[varDataLen(input)] = 0;
-            
-            double value = strtod(tmp, NULL);
-            SET_TYPED_DATA(output, outType, value);
-          }
-          
-          input += varDataLen(input) + VARSTR_HEADER_SIZE;
-          output += tDataTypes[outType].bytes;
+        if (sclIsNull(pIn, i)) {
+          sclSetNull(pOut, i);
+          continue;
         }
         
-        tfree(tmp);
-      } else if (inType == TSDB_DATA_TYPE_NCHAR) {      
-        int32_t bufSize = varDataLen(input) * TSDB_NCHAR_SIZE + 1;
-        char *tmp = calloc(1, bufSize);
-        if (NULL == tmp) {
-          sclError("calloc %d failed", bufSize);
-          return TSDB_CODE_QRY_OUT_OF_MEMORY;
-        }
-        
-        for (int32_t i = 0; i < pIn->num; ++i) {
-          if (isNull(input, inType)) {
-            assignVal(output, getNullValue(outType), 0, outType);
-          } else {        
-            if (varDataLen(input)* TSDB_NCHAR_SIZE >= bufSize) {
-              bufSize = varDataLen(input) * TSDB_NCHAR_SIZE + 1;
-              tmp = realloc(tmp, bufSize);
-            }
-          
-            int len = taosUcs4ToMbs(varDataVal(input), varDataLen(input), tmp);
-            if (len < 0){
-              sclError("castConvert taosUcs4ToMbs error 1");
-              tfree(tmp);
-              return TSDB_CODE_QRY_APP_ERROR;
-            }
-            
-            tmp[len] = 0;
-            double value = strtod(tmp, NULL);
-            SET_TYPED_DATA(output, outType, value);
-          }
-
-          input += varDataLen(input) + VARSTR_HEADER_SIZE;
-          output += tDataTypes[outType].bytes;
-        }
-        
-        tfree(tmp);
-      } else {
-        for (int32_t i = 0; i < pIn->num; ++i) {
-          if (isNull(input, inType)) {
-            assignVal(output, getNullValue(outType), 0, outType);
-          } else {         
-            int64_t value = 0;
-            GET_TYPED_DATA(value, int64_t, inType, input);
-            SET_TYPED_DATA(output, outType, value);
-          }
-
-          input += tDataTypes[inType].bytes;
-          output += tDataTypes[outType].bytes;
-        }
+        double value = 0;
+
+        GET_TYPED_DATA(value, double, inType, pIn->data);
+        SET_TYPED_DATA(pOut->data, outType, value);
       }
       break;      
     default:
@@ -595,6 +485,7 @@ int32_t vectorConvert(SScalarParam* pLeft, SScalarParam* pRight, SScalarParam* p
     if (NULL == paramOut1->data) {
       return TSDB_CODE_QRY_OUT_OF_MEMORY;
     }
+    paramOut1->orig.data = paramOut1->data;
     
     code = vectorConvertImpl(param1, paramOut1);
     if (code) {
@@ -612,6 +503,7 @@ int32_t vectorConvert(SScalarParam* pLeft, SScalarParam* pRight, SScalarParam* p
       tfree(paramOut1->data);
       return TSDB_CODE_QRY_OUT_OF_MEMORY;
     }
+    paramOut2->orig.data = paramOut2->data;
     
     code = vectorConvertImpl(param2, paramOut2);
     if (code) {
@@ -624,24 +516,21 @@ int32_t vectorConvert(SScalarParam* pLeft, SScalarParam* pRight, SScalarParam* p
   return TSDB_CODE_SUCCESS;
 }
 
-void vectorAdd(SScalarParam* pLeft, SScalarParam* pRight, void *out, int32_t _ord) {
+void vectorMath(SScalarParam* pLeft, SScalarParam* pRight, SScalarParam *pOut, int32_t _ord, _mathFunc func) {
   int32_t i = ((_ord) == TSDB_ORDER_ASC) ? 0 : TMAX(pLeft->num, pRight->num) - 1;
   int32_t step = ((_ord) == TSDB_ORDER_ASC) ? 1 : -1;
-
-  SScalarParam leftParam = {.type = TSDB_DATA_TYPE_DOUBLE, .num = pLeft->num};
-  SScalarParam rightParam = {.type = TSDB_DATA_TYPE_DOUBLE, .num = pRight->num};
+  double leftv = 0, rightv = 0;
+  bool isNull = false;
+  SScalarParam leftParam = {.type = TSDB_DATA_TYPE_DOUBLE, .num = pLeft->num, .dataInBlock = false};
+  SScalarParam rightParam = {.type = TSDB_DATA_TYPE_DOUBLE, .num = pRight->num, .dataInBlock = false};
   if (IS_VAR_DATA_TYPE(pLeft->type)) {
     leftParam.data = calloc(leftParam.num, sizeof(double));
     if (NULL == leftParam.data) {
       sclError("malloc %d failed", (int32_t)(leftParam.num * sizeof(double)));
       return;
     }
+    leftParam.orig.data = leftParam.data;
 
-    if (pLeft->colData) {
-      SColumnInfoData *colInfo = (SColumnInfoData *)pLeft->data;
-      pLeft->data = colInfo->pData;
-    }
-    
     if (vectorConvertImpl(pLeft, &leftParam)) {
       return;
     }
@@ -651,64 +540,237 @@ void vectorAdd(SScalarParam* pLeft, SScalarParam* pRight, void *out, int32_t _or
     rightParam.data = calloc(rightParam.num, sizeof(double));
     if (NULL == rightParam.data) {
       sclError("malloc %d failed", (int32_t)(rightParam.num * sizeof(double)));
-      tfree(leftParam.data);
+      sclFreeParam(&leftParam);
       return;
     }
+    rightParam.orig.data = rightParam.data;
     
-    if (pRight->colData) {    
-      SColumnInfoData *colInfo = (SColumnInfoData *)pRight->data;
-      pRight->data = colInfo->pData;
+    if (vectorConvertImpl(pRight, &rightParam)) {
+      sclFreeParam(&leftParam);
+      sclFreeParam(&rightParam);
+      return;
     }
+    pRight = &rightParam;
+  }
+
+  if (pLeft->num == pRight->num) {
+    for (; i < pRight->num && i >= 0; i += step) {
+      sclMoveParamListData(pLeft, 1, i);
+      sclMoveParamListData(pRight, 1, i);
+      sclMoveParamListData(pOut, 1, i);
+      
+      if (sclIsNull(pLeft, i) || sclIsNull(pRight, i)) {
+        sclSetNull(pOut, i);
+        continue;
+      }
+
+      GET_TYPED_DATA(leftv, double, pLeft->type, pLeft->data);
+      GET_TYPED_DATA(rightv, double, pRight->type, pRight->data);
+
+      SET_DOUBLE_VAL(pOut->data, (*func)(leftv, rightv, &isNull));
+      if (isNull) {
+        sclSetNull(pOut, i);
+        isNull = false;
+      }      
+    }
+  } else if (pLeft->num == 1) {
+    sclMoveParamListData(pLeft, 1, 0);
+    GET_TYPED_DATA(leftv, double, pLeft->type, pLeft->data);
+
+    for (; i >= 0 && i < pRight->num; i += step) {
+      sclMoveParamListData(pRight, 1, i);
+      sclMoveParamListData(pOut, 1, i);
+
+      if (sclIsNull(pLeft, 0) || sclIsNull(pRight, i)) {
+        sclSetNull(pOut, i);
+        continue;
+      }      
+
+      GET_TYPED_DATA(rightv, double, pRight->type, pRight->data);
+      
+      SET_DOUBLE_VAL(pOut->data, (*func)(leftv, rightv, &isNull));
+      if (isNull) {
+        sclSetNull(pOut, i);
+        isNull = false;
+      }
+    }
+  } else if (pRight->num == 1) {
+    sclMoveParamListData(pRight, 1, 0);
+    GET_TYPED_DATA(rightv, double, pRight->type, pRight->data);
+    
+    for (; i >= 0 && i < pLeft->num; i += step) {
+      sclMoveParamListData(pLeft, 1, i);
+      sclMoveParamListData(pOut, 1, i);
+      
+      if (sclIsNull(pLeft, i) || sclIsNull(pRight, 0)) {
+        sclSetNull(pOut, i);
+        continue;
+      }
+
+      GET_TYPED_DATA(leftv, double, pLeft->type, pLeft->data);
+      
+      SET_DOUBLE_VAL(pOut->data, (*func)(leftv, rightv, &isNull));
+      if (isNull) {
+        sclSetNull(pOut, i);
+        isNull = false;
+      }
+    }
+  }
+
+  sclFreeParam(&leftParam);
+  sclFreeParam(&rightParam);  
+}
+
+double mathAdd(double leftv, double rightv, bool *isNull) {
+  return leftv + rightv;
+}
+
+double mathSub(double leftv, double rightv, bool *isNull) {
+  return leftv - rightv;
+}
+
+double mathMultiply(double leftv, double rightv, bool *isNull) {
+  return leftv * rightv;
+}
+
+double mathDivide(double leftv, double rightv, bool *isNull) {
+  double zero = 0;  
+  if (0 == compareDoubleVal(&rightv, &zero)) {
+    *isNull = true;
+    return zero;
+  }
+  
+  return leftv / rightv;
+}
+
+double mathRemainder(double leftv, double rightv, bool *isNull) {
+  double zero = 0;
+  if (0 == compareDoubleVal(&rightv, &zero)) {
+    *isNull = true;
+    return zero;
+  }
+
+  return leftv - ((int64_t)(leftv / rightv)) * rightv;
+}
+
+
+void vectorAdd(SScalarParam* pLeft, SScalarParam* pRight, SScalarParam *pOut, int32_t _ord) {
+  vectorMath(pLeft, pRight, pOut, _ord, mathAdd);
+}
+
+void vectorSub(SScalarParam* pLeft, SScalarParam* pRight, SScalarParam *pOut, int32_t _ord) {
+  vectorMath(pLeft, pRight, pOut, _ord, mathSub);
+}
+
+void vectorMultiply(SScalarParam* pLeft, SScalarParam* pRight, SScalarParam *pOut, int32_t _ord) {
+  vectorMath(pLeft, pRight, pOut, _ord, mathMultiply);
+}
+
+void vectorDivide(SScalarParam* pLeft, SScalarParam* pRight, SScalarParam *pOut, int32_t _ord) {
+  vectorMath(pLeft, pRight, pOut, _ord, mathDivide);
+}
+
+void vectorRemainder(SScalarParam* pLeft, SScalarParam* pRight, SScalarParam *pOut, int32_t _ord) {
+  vectorMath(pLeft, pRight, pOut, _ord, mathRemainder);
+}
+
+#if 0
+void vectorAdd(SScalarParam* pLeft, SScalarParam* pRight, SScalarParam *pOut, int32_t _ord) {
+  int32_t i = ((_ord) == TSDB_ORDER_ASC) ? 0 : TMAX(pLeft->num, pRight->num) - 1;
+  int32_t step = ((_ord) == TSDB_ORDER_ASC) ? 1 : -1;
+  double leftv = 0, rightv = 0;
+  SScalarParam leftParam = {.type = TSDB_DATA_TYPE_DOUBLE, .num = pLeft->num, .dataInBlock = false};
+  SScalarParam rightParam = {.type = TSDB_DATA_TYPE_DOUBLE, .num = pRight->num, .dataInBlock = false};
+  if (IS_VAR_DATA_TYPE(pLeft->type)) {
+    leftParam.data = calloc(leftParam.num, sizeof(double));
+    if (NULL == leftParam.data) {
+      sclError("malloc %d failed", (int32_t)(leftParam.num * sizeof(double)));
+      return;
+    }
+    leftParam.orig.data = leftParam.data;
+
+    if (vectorConvertImpl(pLeft, &leftParam)) {
+      return;
+    }
+    pLeft = &leftParam;
+  }
+  if (IS_VAR_DATA_TYPE(pRight->type)) {
+    rightParam.data = calloc(rightParam.num, sizeof(double));
+    if (NULL == rightParam.data) {
+      sclError("malloc %d failed", (int32_t)(rightParam.num * sizeof(double)));
+      sclFreeParam(&leftParam);
+      return;
+    }
+    rightParam.orig.data = rightParam.data;
     
     if (vectorConvertImpl(pRight, &rightParam)) {
-      tfree(leftParam.data);
-      tfree(rightParam.data);
+      sclFreeParam(&leftParam);
+      sclFreeParam(&rightParam);
       return;
     }
     pRight = &rightParam;
   }
 
-  double *output=(double*)out;
-  _getValueAddr_fn_t getVectorValueAddrFnLeft = getVectorValueAddrFn(pLeft->type);
-  _getValueAddr_fn_t getVectorValueAddrFnRight = getVectorValueAddrFn(pRight->type);
-  _getDoubleValue_fn_t getVectorDoubleValueFnLeft = getVectorDoubleValueFn(pLeft->type);
-  _getDoubleValue_fn_t getVectorDoubleValueFnRight = getVectorDoubleValueFn(pRight->type);
-
   if (pLeft->num == pRight->num) {
-    for (; i < pRight->num && i >= 0; i += step, output += 1) {
-      if (isNull(getVectorValueAddrFnLeft(pLeft->data, i), pLeft->type) ||
-          isNull(getVectorValueAddrFnRight(pRight->data, i), pRight->type)) {
-        SET_DOUBLE_NULL(output);
+    for (; i < pRight->num && i >= 0; i += step) {
+      sclMoveParamListData(pLeft, 1, i);
+      sclMoveParamListData(pRight, 1, i);
+      sclMoveParamListData(pOut, 1, i);
+      
+      if (sclIsNull(pLeft, i) || sclIsNull(pRight, i)) {
+        sclSetNull(pOut, i);
         continue;
       }
 
-      SET_DOUBLE_VAL(output, getVectorDoubleValueFnLeft(pLeft->data, i) + getVectorDoubleValueFnRight(pRight->data, i));
+      GET_TYPED_DATA(leftv, double, pLeft->type, pLeft->data);
+      GET_TYPED_DATA(rightv, double, pRight->type, pRight->data);
+
+      SET_DOUBLE_VAL(pOut->data, leftv + rightv);
     }
   } else if (pLeft->num == 1) {
-    for (; i >= 0 && i < pRight->num; i += step, output += 1) {
-      if (isNull(getVectorValueAddrFnLeft(pLeft->data, 0), pLeft->type) || isNull(getVectorValueAddrFnRight(pRight->data,i), pRight->type)) {
-        SET_DOUBLE_NULL(output);
+    sclMoveParamListData(pLeft, 1, 0);
+    GET_TYPED_DATA(leftv, double, pLeft->type, pLeft->data);
+
+    for (; i >= 0 && i < pRight->num; i += step) {
+      sclMoveParamListData(pRight, 1, i);
+      sclMoveParamListData(pOut, 1, i);
+
+      if (sclIsNull(pLeft, 0) || sclIsNull(pRight, i)) {
+        sclSetNull(pOut, i);
         continue;
-      }
-      SET_DOUBLE_VAL(output,getVectorDoubleValueFnLeft(pLeft->data, 0) + getVectorDoubleValueFnRight(pRight->data,i));
+      }      
+
+      GET_TYPED_DATA(rightv, double, pRight->type, pRight->data);
+      
+      SET_DOUBLE_VAL(pOut->data, leftv + rightv);
     }
   } else if (pRight->num == 1) {
-    for (; i >= 0 && i < pLeft->num; i += step, output += 1) {
-      if (isNull(getVectorValueAddrFnLeft(pLeft->data,i), pLeft->type) || isNull(getVectorValueAddrFnRight(pRight->data,0), pRight->type)) {
-        SET_DOUBLE_NULL(output);
+    sclMoveParamListData(pRight, 1, 0);
+    GET_TYPED_DATA(rightv, double, pRight->type, pRight->data);
+    
+    for (; i >= 0 && i < pLeft->num; i += step) {
+      sclMoveParamListData(pLeft, 1, i);
+      sclMoveParamListData(pOut, 1, i);
+      
+      if (sclIsNull(pLeft, i) || sclIsNull(pRight, 0)) {
+        sclSetNull(pOut, i);
         continue;
       }
-      SET_DOUBLE_VAL(output,getVectorDoubleValueFnLeft(pLeft->data,i) + getVectorDoubleValueFnRight(pRight->data,0));
+
+      GET_TYPED_DATA(leftv, double, pLeft->type, pLeft->data);
+      
+      SET_DOUBLE_VAL(pOut->data, leftv + rightv);
     }
   }
 
-  tfree(leftParam.data);
-  tfree(rightParam.data);  
+  sclFreeParam(&leftParam);
+  sclFreeParam(&rightParam);  
 }
 
-void vectorSub(SScalarParam* pLeft, SScalarParam* pRight, void *out, int32_t _ord) {
+void vectorSub(SScalarParam* pLeft, SScalarParam* pRight, SScalarParam *pOut, int32_t _ord) {
   int32_t i = ((_ord) == TSDB_ORDER_ASC) ? 0 : TMAX(pLeft->num, pRight->num) - 1;
   int32_t step = ((_ord) == TSDB_ORDER_ASC) ? 1 : -1;
+  double leftv = 0, rightv = 0;
 
   SScalarParam leftParam = {.type = TSDB_DATA_TYPE_DOUBLE, .num = pLeft->num};
   SScalarParam rightParam = {.type = TSDB_DATA_TYPE_DOUBLE, .num = pRight->num};
@@ -718,12 +780,8 @@ void vectorSub(SScalarParam* pLeft, SScalarParam* pRight, void *out, int32_t _or
       sclError("malloc %d failed", (int32_t)(leftParam.num * sizeof(double)));
       return;
     }
+    leftParam.orig.data = leftParam.data;
 
-    if (pLeft->colData) {
-      SColumnInfoData *colInfo = (SColumnInfoData *)pLeft->data;
-      pLeft->data = colInfo->pData;
-    }
-    
     if (vectorConvertImpl(pLeft, &leftParam)) {
       return;
     }
@@ -733,62 +791,75 @@ void vectorSub(SScalarParam* pLeft, SScalarParam* pRight, void *out, int32_t _or
     rightParam.data = calloc(rightParam.num, sizeof(double));
     if (NULL == rightParam.data) {
       sclError("malloc %d failed", (int32_t)(rightParam.num * sizeof(double)));
-      tfree(leftParam.data);
+      sclFreeParam(&leftParam);
       return;
     }
-    
-    if (pRight->colData) {    
-      SColumnInfoData *colInfo = (SColumnInfoData *)pRight->data;
-      pRight->data = colInfo->pData;
-    }
+    rightParam.orig.data = rightParam.data;
     
     if (vectorConvertImpl(pRight, &rightParam)) {
-      tfree(leftParam.data);
-      tfree(rightParam.data);
+      sclFreeParam(&leftParam);
+      sclFreeParam(&rightParam);
       return;
     }
     pRight = &rightParam;
   }
 
-  double *output=(double*)out;
-  _getValueAddr_fn_t getVectorValueAddrFnLeft = getVectorValueAddrFn(pLeft->type);
-  _getValueAddr_fn_t getVectorValueAddrFnRight = getVectorValueAddrFn(pRight->type);
+
   _getDoubleValue_fn_t getVectorDoubleValueFnLeft = getVectorDoubleValueFn(pLeft->type);
   _getDoubleValue_fn_t getVectorDoubleValueFnRight = getVectorDoubleValueFn(pRight->type);
 
   if (pLeft->num == pRight->num) {
-    for (; i < pRight->num && i >= 0; i += step, output += 1) {
-      if (isNull(getVectorValueAddrFnLeft(pLeft->data, i), pLeft->type) ||
-          isNull(getVectorValueAddrFnRight(pRight->data, i), pRight->type)) {
-        SET_DOUBLE_NULL(output);                                                                       
-        continue;                                                                                   
+    for (; i < pRight->num && i >= 0; i += step) {
+      sclMoveParamListData(pLeft, 1, i);
+      sclMoveParamListData(pRight, 1, i);
+      sclMoveParamListData(pOut, 1, i);
+      
+      if (sclIsNull(pLeft, i) || sclIsNull(pRight, i)) {
+        sclSetNull(pOut, i);
+        continue;
       }
-      SET_DOUBLE_VAL(output, getVectorDoubleValueFnLeft(pLeft->data, i) - getVectorDoubleValueFnRight(pRight->data, i));
-    }                                                                                               
+
+      GET_TYPED_DATA(leftv, double, pLeft->type, pLeft->data);
+      GET_TYPED_DATA(rightv, double, pRight->type, pRight->data);
+
+      SET_DOUBLE_VAL(pOut->data, getVectorDoubleValueFnLeft(pLeft->data, i) - getVectorDoubleValueFnRight(pRight->data, i));
+    }
   } else if (pLeft->num == 1) {
-    for (; i >= 0 && i < pRight->num; i += step, output += 1) {
-      if (isNull(getVectorValueAddrFnLeft(pLeft->data, 0), pLeft->type) || isNull(getVectorValueAddrFnRight(pRight->data,i), pRight->type)) {
-        SET_DOUBLE_NULL(output);
+    sclMoveParamListData(pLeft, 1, 0);
+    GET_TYPED_DATA(leftv, double, pLeft->type, pLeft->data);
+  
+    for (; i >= 0 && i < pRight->num; i += step) {
+      sclMoveParamListData(pRight, 1, i);
+      sclMoveParamListData(pOut, 1, i);
+
+      if (sclIsNull(pLeft, 0) || sclIsNull(pRight, i)) {
+        sclSetNull(pOut, i);
         continue;
-      }
-      SET_DOUBLE_VAL(output,getVectorDoubleValueFnLeft(pLeft->data, 0) - getVectorDoubleValueFnRight(pRight->data,i));
+      }      
+
+      SET_DOUBLE_VAL(pOut->data,getVectorDoubleValueFnLeft(pLeft->data, 0) - getVectorDoubleValueFnRight(pRight->data,i));
     }
   } else if (pRight->num == 1) {
-    for (; i >= 0 && i < pLeft->num; i += step, output += 1) {
-      if (isNull(getVectorValueAddrFnLeft(pLeft->data,i), pLeft->type) || isNull(getVectorValueAddrFnRight(pRight->data,0), pRight->type)) {
-        SET_DOUBLE_NULL(output);
+    for (; i >= 0 && i < pLeft->num; i += step) {
+      sclMoveParamListData(pLeft, 1, i);
+      sclMoveParamListData(pOut, 1, i);
+      
+      if (sclIsNull(pLeft, i) || sclIsNull(pRight, 0)) {
+        sclSetNull(pOut, i);
         continue;
       }
-      SET_DOUBLE_VAL(output,getVectorDoubleValueFnLeft(pLeft->data,i) - getVectorDoubleValueFnRight(pRight->data,0));
+
+      SET_DOUBLE_VAL(pOut->data,getVectorDoubleValueFnLeft(pLeft->data,i) - getVectorDoubleValueFnRight(pRight->data,0));
     }
   }
 
-  tfree(leftParam.data);
-  tfree(rightParam.data);  
+  sclFreeParam(&leftParam);
+  sclFreeParam(&rightParam);  
 }
-void vectorMultiply(SScalarParam* pLeft, SScalarParam* pRight, void *out, int32_t _ord) {
+void vectorMultiply(SScalarParam* pLeft, SScalarParam* pRight, SScalarParam *pOut, int32_t _ord) {
   int32_t i = ((_ord) == TSDB_ORDER_ASC) ? 0 : TMAX(pLeft->num, pRight->num) - 1;
   int32_t step = ((_ord) == TSDB_ORDER_ASC) ? 1 : -1;
+  double leftv = 0, rightv = 0;
 
   SScalarParam leftParam = {.type = TSDB_DATA_TYPE_DOUBLE, .num = pLeft->num};
   SScalarParam rightParam = {.type = TSDB_DATA_TYPE_DOUBLE, .num = pRight->num};
@@ -798,12 +869,8 @@ void vectorMultiply(SScalarParam* pLeft, SScalarParam* pRight, void *out, int32_
       sclError("malloc %d failed", (int32_t)(leftParam.num * sizeof(double)));
       return;
     }
+    leftParam.orig.data = leftParam.data;
 
-    if (pLeft->colData) {
-      SColumnInfoData *colInfo = (SColumnInfoData *)pLeft->data;
-      pLeft->data = colInfo->pData;
-    }
-    
     if (vectorConvertImpl(pLeft, &leftParam)) {
       return;
     }
@@ -813,64 +880,76 @@ void vectorMultiply(SScalarParam* pLeft, SScalarParam* pRight, void *out, int32_
     rightParam.data = calloc(rightParam.num, sizeof(double));
     if (NULL == rightParam.data) {
       sclError("malloc %d failed", (int32_t)(rightParam.num * sizeof(double)));
-      tfree(leftParam.data);
+      sclFreeParam(&leftParam);
       return;
     }
-    
-    if (pRight->colData) {    
-      SColumnInfoData *colInfo = (SColumnInfoData *)pRight->data;
-      pRight->data = colInfo->pData;
-    }
+    rightParam.orig.data = rightParam.data;
     
     if (vectorConvertImpl(pRight, &rightParam)) {
-      tfree(leftParam.data);
-      tfree(rightParam.data);
+      sclFreeParam(&leftParam);
+      sclFreeParam(&rightParam);
       return;
     }
     pRight = &rightParam;
   }
 
-  double *output=(double*)out;
-  _getValueAddr_fn_t getVectorValueAddrFnLeft = getVectorValueAddrFn(pLeft->type);
-  _getValueAddr_fn_t getVectorValueAddrFnRight = getVectorValueAddrFn(pRight->type);
+
   _getDoubleValue_fn_t getVectorDoubleValueFnLeft = getVectorDoubleValueFn(pLeft->type);
   _getDoubleValue_fn_t getVectorDoubleValueFnRight = getVectorDoubleValueFn(pRight->type);
 
   if (pLeft->num == pRight->num) {
-    for (; i < pRight->num && i >= 0; i += step, output += 1) {
-      if (isNull(getVectorValueAddrFnLeft(pLeft->data, i), pLeft->type) ||
-          isNull(getVectorValueAddrFnRight(pRight->data, i), pRight->type)) {
-        SET_DOUBLE_NULL(output);
+    for (; i < pRight->num && i >= 0; i += step) {
+      sclMoveParamListData(pLeft, 1, i);
+      sclMoveParamListData(pRight, 1, i);
+      sclMoveParamListData(pOut, 1, i);
+      
+      if (sclIsNull(pLeft, i) || sclIsNull(pRight, i)) {
+        sclSetNull(pOut, i);
         continue;
       }
 
-      SET_DOUBLE_VAL(output, getVectorDoubleValueFnLeft(pLeft->data, i) * getVectorDoubleValueFnRight(pRight->data, i));
+      GET_TYPED_DATA(leftv, double, pLeft->type, pLeft->data);
+      GET_TYPED_DATA(rightv, double, pRight->type, pRight->data);
+
+      SET_DOUBLE_VAL(pOut->data, getVectorDoubleValueFnLeft(pLeft->data, i) * getVectorDoubleValueFnRight(pRight->data, i));
     }
   } else if (pLeft->num == 1) {
-    for (; i >= 0 && i < pRight->num; i += step, output += 1) {
-      if (isNull(getVectorValueAddrFnLeft(pLeft->data, 0), pLeft->type) || isNull(getVectorValueAddrFnRight(pRight->data,i), pRight->type)) {
-        SET_DOUBLE_NULL(output);
+    sclMoveParamListData(pLeft, 1, 0);
+    GET_TYPED_DATA(leftv, double, pLeft->type, pLeft->data);
+  
+    for (; i >= 0 && i < pRight->num; i += step) {
+      sclMoveParamListData(pRight, 1, i);
+      sclMoveParamListData(pOut, 1, i);
+
+      if (sclIsNull(pLeft, 0) || sclIsNull(pRight, i)) {
+        sclSetNull(pOut, i);
         continue;
-      }
-      SET_DOUBLE_VAL(output,getVectorDoubleValueFnLeft(pLeft->data, 0) * getVectorDoubleValueFnRight(pRight->data,i));
+      }      
+
+      SET_DOUBLE_VAL(pOut->data,getVectorDoubleValueFnLeft(pLeft->data, 0) * getVectorDoubleValueFnRight(pRight->data,i));
     }
   } else if (pRight->num == 1) {
-    for (; i >= 0 && i < pLeft->num; i += step, output += 1) {
-      if (isNull(getVectorValueAddrFnLeft(pLeft->data,i), pLeft->type) || isNull(getVectorValueAddrFnRight(pRight->data,0), pRight->type)) {
-        SET_DOUBLE_NULL(output);
+    for (; i >= 0 && i < pLeft->num; i += step) {
+      sclMoveParamListData(pLeft, 1, i);
+      sclMoveParamListData(pOut, 1, i);
+      
+      if (sclIsNull(pLeft, i) || sclIsNull(pRight, 0)) {
+        sclSetNull(pOut, i);
         continue;
       }
-      SET_DOUBLE_VAL(output,getVectorDoubleValueFnLeft(pLeft->data,i) * getVectorDoubleValueFnRight(pRight->data,0));
+
+      SET_DOUBLE_VAL(pOut->data,getVectorDoubleValueFnLeft(pLeft->data,i) * getVectorDoubleValueFnRight(pRight->data,0));
     }
-  }                                                                                                 
+  }
 
-  tfree(leftParam.data);
-  tfree(rightParam.data);  
+  sclFreeParam(&leftParam);
+  sclFreeParam(&rightParam);  
 }
 
-void vectorDivide(SScalarParam* pLeft, SScalarParam* pRight, void *out, int32_t _ord) {
+void vectorDivide(SScalarParam* pLeft, SScalarParam* pRight, SScalarParam *pOut, int32_t _ord) {
   int32_t i = ((_ord) == TSDB_ORDER_ASC) ? 0 : TMAX(pLeft->num, pRight->num) - 1;
   int32_t step = ((_ord) == TSDB_ORDER_ASC) ? 1 : -1;
+  double leftv = 0, rightv = 0;
 
   SScalarParam leftParam = {.type = TSDB_DATA_TYPE_DOUBLE, .num = pLeft->num};
   SScalarParam rightParam = {.type = TSDB_DATA_TYPE_DOUBLE, .num = pRight->num};
@@ -880,12 +959,8 @@ void vectorDivide(SScalarParam* pLeft, SScalarParam* pRight, void *out, int32_t
       sclError("malloc %d failed", (int32_t)(leftParam.num * sizeof(double)));
       return;
     }
+    leftParam.orig.data = leftParam.data;
 
-    if (pLeft->colData) {
-      SColumnInfoData *colInfo = (SColumnInfoData *)pLeft->data;
-      pLeft->data = colInfo->pData;
-    }
-    
     if (vectorConvertImpl(pLeft, &leftParam)) {
       return;
     }
@@ -895,71 +970,73 @@ void vectorDivide(SScalarParam* pLeft, SScalarParam* pRight, void *out, int32_t
     rightParam.data = calloc(rightParam.num, sizeof(double));
     if (NULL == rightParam.data) {
       sclError("malloc %d failed", (int32_t)(rightParam.num * sizeof(double)));
-      tfree(leftParam.data);
+      sclFreeParam(&leftParam);
       return;
     }
-    
-    if (pRight->colData) {    
-      SColumnInfoData *colInfo = (SColumnInfoData *)pRight->data;
-      pRight->data = colInfo->pData;
-    }
+    rightParam.orig.data = rightParam.data;
     
     if (vectorConvertImpl(pRight, &rightParam)) {
-      tfree(leftParam.data);
-      tfree(rightParam.data);
+      sclFreeParam(&leftParam);
+      sclFreeParam(&rightParam);
       return;
     }
     pRight = &rightParam;
   }
 
-  double *output=(double*)out;
-  _getValueAddr_fn_t getVectorValueAddrFnLeft = getVectorValueAddrFn(pLeft->type);
-  _getValueAddr_fn_t getVectorValueAddrFnRight = getVectorValueAddrFn(pRight->type);
+
   _getDoubleValue_fn_t getVectorDoubleValueFnLeft = getVectorDoubleValueFn(pLeft->type);
   _getDoubleValue_fn_t getVectorDoubleValueFnRight = getVectorDoubleValueFn(pRight->type);
 
   if (pLeft->num == pRight->num) {
-    for (; i < pRight->num && i >= 0; i += step, output += 1) {
-      if (isNull(getVectorValueAddrFnLeft(pLeft->data, i), pLeft->type) ||
-          isNull(getVectorValueAddrFnRight(pRight->data, i), pRight->type)) {
-        SET_DOUBLE_NULL(output);
+    for (; i < pRight->num && i >= 0; i += step) {
+      sclMoveParamListData(pLeft, 1, i);
+      sclMoveParamListData(pRight, 1, i);
+      sclMoveParamListData(pOut, 1, i);
+      
+      if (sclIsNull(pLeft, i) || sclIsNull(pRight, i)) {
+        sclSetNull(pOut, i);
         continue;
       }
 
-      SET_DOUBLE_VAL(output, getVectorDoubleValueFnLeft(pLeft->data, i) / getVectorDoubleValueFnRight(pRight->data, i));
+      GET_TYPED_DATA(leftv, double, pLeft->type, pLeft->data);
+      GET_TYPED_DATA(rightv, double, pRight->type, pRight->data);
+
+      SET_DOUBLE_VAL(pOut->data, getVectorDoubleValueFnLeft(pLeft->data, i) / getVectorDoubleValueFnRight(pRight->data, i));
     }
   } else if (pLeft->num == 1) {
-    double left = getVectorDoubleValueFnLeft(pLeft->data, 0);
+    for (; i >= 0 && i < pRight->num; i += step) {
+      sclMoveParamListData(pRight, 1, i);
+      sclMoveParamListData(pOut, 1, i);
 
-    for (; i >= 0 && i < pRight->num; i += step, output += 1) {
-      if (isNull(&left, pLeft->type) || isNull(getVectorValueAddrFnRight(pRight->data,i), pRight->type)) {
-        SET_DOUBLE_NULL(output);
+      if (sclIsNull(pLeft, 0) || sclIsNull(pRight, i)) {
+        sclSetNull(pOut, i);
         continue;
-      }
+      }      
 
-      SET_DOUBLE_VAL(output,left / getVectorDoubleValueFnRight(pRight->data,i));
+      SET_DOUBLE_VAL(pOut->data,getVectorDoubleValueFnLeft(pLeft->data, 0) / getVectorDoubleValueFnRight(pRight->data,i));
     }
   } else if (pRight->num == 1) {
-    double right = getVectorDoubleValueFnRight(pRight->data, 0);
-
-    for (; i >= 0 && i < pLeft->num; i += step, output += 1) {
-      if (isNull(getVectorValueAddrFnLeft(pLeft->data, i), pLeft->type) ||
-          isNull(&right, pRight->type)) {
-        SET_DOUBLE_NULL(output);
+    for (; i >= 0 && i < pLeft->num; i += step) {
+      sclMoveParamListData(pLeft, 1, i);
+      sclMoveParamListData(pOut, 1, i);
+      
+      if (sclIsNull(pLeft, i) || sclIsNull(pRight, 0)) {
+        sclSetNull(pOut, i);
         continue;
       }
 
-      SET_DOUBLE_VAL(output, getVectorDoubleValueFnLeft(pLeft->data, i) / right);
+      SET_DOUBLE_VAL(pOut->data,getVectorDoubleValueFnLeft(pLeft->data,i) / getVectorDoubleValueFnRight(pRight->data,0));
     }
   }
 
-  tfree(leftParam.data);
-  tfree(rightParam.data);  
+  sclFreeParam(&leftParam);
+  sclFreeParam(&rightParam);  
 }
 
-void vectorRemainder(SScalarParam* pLeft, SScalarParam* pRight, void *out, int32_t _ord) {
+void vectorRemainder(SScalarParam* pLeft, SScalarParam* pRight, SScalarParam *pOut, int32_t _ord) {
   int32_t i = ((_ord) == TSDB_ORDER_ASC) ? 0 : TMAX(pLeft->num, pRight->num) - 1;
   int32_t step = ((_ord) == TSDB_ORDER_ASC) ? 1 : -1;
+  double leftv = 0, rightv = 0;
 
   SScalarParam leftParam = {.type = TSDB_DATA_TYPE_DOUBLE, .num = pLeft->num};
   SScalarParam rightParam = {.type = TSDB_DATA_TYPE_DOUBLE, .num = pRight->num};
@@ -969,12 +1046,8 @@ void vectorRemainder(SScalarParam* pLeft, SScalarParam* pRight, void *out, int32
       sclError("malloc %d failed", (int32_t)(leftParam.num * sizeof(double)));
       return;
     }
+    leftParam.orig.data = leftParam.data;
 
-    if (pLeft->colData) {
-      SColumnInfoData *colInfo = (SColumnInfoData *)pLeft->data;
-      pLeft->data = colInfo->pData;
-    }
-    
     if (vectorConvertImpl(pLeft, &leftParam)) {
       return;
     }
@@ -984,94 +1057,98 @@ void vectorRemainder(SScalarParam* pLeft, SScalarParam* pRight, void *out, int32
     rightParam.data = calloc(rightParam.num, sizeof(double));
     if (NULL == rightParam.data) {
       sclError("malloc %d failed", (int32_t)(rightParam.num * sizeof(double)));
-      tfree(leftParam.data);
+      sclFreeParam(&leftParam);
       return;
     }
-    
-    if (pRight->colData) {    
-      SColumnInfoData *colInfo = (SColumnInfoData *)pRight->data;
-      pRight->data = colInfo->pData;
-    }
+    rightParam.orig.data = rightParam.data;
     
     if (vectorConvertImpl(pRight, &rightParam)) {
-      tfree(leftParam.data);
-      tfree(rightParam.data);
+      sclFreeParam(&leftParam);
+      sclFreeParam(&rightParam);
       return;
     }
     pRight = &rightParam;
   }
 
-  double *             output = (double *)out;
-  _getValueAddr_fn_t   getVectorValueAddrFnLeft = getVectorValueAddrFn(pLeft->type);
-  _getValueAddr_fn_t   getVectorValueAddrFnRight = getVectorValueAddrFn(pRight->type);
+
   _getDoubleValue_fn_t getVectorDoubleValueFnLeft = getVectorDoubleValueFn(pLeft->type);
   _getDoubleValue_fn_t getVectorDoubleValueFnRight = getVectorDoubleValueFn(pRight->type);
 
   if (pLeft->num == pRight->num) {
-    for (; i < pRight->num && i >= 0; i += step, output += 1) {
-      if (isNull(getVectorValueAddrFnLeft(pLeft->data, i), pLeft->type) ||
-          isNull(getVectorValueAddrFnRight(pRight->data, i), pRight->type)) {
-        SET_DOUBLE_NULL(output);
+    for (; i < pRight->num && i >= 0; i += step) {
+      sclMoveParamListData(pLeft, 1, i);
+      sclMoveParamListData(pRight, 1, i);
+      sclMoveParamListData(pOut, 1, i);
+      
+      if (sclIsNull(pLeft, i) || sclIsNull(pRight, i)) {
+        sclSetNull(pOut, i);
         continue;
       }
 
       double v, u = 0.0;
-      GET_TYPED_DATA(v, double, pRight->type, getVectorValueAddrFnRight(pRight->data, i));
+      GET_TYPED_DATA(v, double, pRight->type, pRight->data);
       if (getComparFunc(TSDB_DATA_TYPE_DOUBLE, 0)(&v, &u) == 0) {
-        SET_DOUBLE_NULL(output);
+        sclSetNull(pOut, i);
         continue;
       }
 
-      double left = getVectorDoubleValueFnLeft(pLeft->data, i);
-      double right = getVectorDoubleValueFnRight(pRight->data, i);
-      SET_DOUBLE_VAL(output, left - ((int64_t)(left / right)) * right);
+      GET_TYPED_DATA(leftv, double, pLeft->type, pLeft->data);
+      GET_TYPED_DATA(rightv, double, pRight->type, pRight->data);
+
+      SET_DOUBLE_VAL(pOut->data, left - ((int64_t)(left / right)) * right);
     }
   } else if (pLeft->num == 1) {
     double left = getVectorDoubleValueFnLeft(pLeft->data, 0);
 
-    for (; i >= 0 && i < pRight->num; i += step, output += 1) {
-      if (isNull(&left, pLeft->type) ||
-          isNull(getVectorValueAddrFnRight(pRight->data, i), pRight->type)) {
-        SET_DOUBLE_NULL(output);
+    for (; i >= 0 && i < pRight->num; i += step) {
+      sclMoveParamListData(pRight, 1, i);
+      sclMoveParamListData(pOut, 1, i);
+      
+      if (sclIsNull(pLeft, 0) || sclIsNull(pRight, i)) {
+        sclSetNull(pOut, i);
         continue;
       }
 
       double v, u = 0.0;
-      GET_TYPED_DATA(v, double, pRight->type, getVectorValueAddrFnRight(pRight->data, i));
+      GET_TYPED_DATA(v, double, pRight->type, pRight->data);
       if (getComparFunc(TSDB_DATA_TYPE_DOUBLE, 0)(&v, &u) == 0) {
-        SET_DOUBLE_NULL(output);
+        sclSetNull(pOut, i);
         continue;
       }
 
       double right = getVectorDoubleValueFnRight(pRight->data, i);
-      SET_DOUBLE_VAL(output, left - ((int64_t)(left / right)) * right);
+      SET_DOUBLE_VAL(pOut->data, left - ((int64_t)(left / right)) * right);
     }
   } else if (pRight->num == 1) {
     double right = getVectorDoubleValueFnRight(pRight->data, 0);
 
-    for (; i >= 0 && i < pLeft->num; i += step, output += 1) {
-      if (isNull(getVectorValueAddrFnLeft(pLeft->data, i), pLeft->type) ||
-          isNull(&right, pRight->type)) {
-        SET_DOUBLE_NULL(output);
+    for (; i >= 0 && i < pLeft->num; i += step) {
+      sclMoveParamListData(pLeft, 1, i);
+      sclMoveParamListData(pOut, 1, i);
+      
+      if (sclIsNull(pLeft, i) || sclIsNull(pRight, i)) {
+        sclSetNull(pOut, i);
         continue;
       }
 
       double v, u = 0.0;
-      GET_TYPED_DATA(v, double, pRight->type, getVectorValueAddrFnRight(pRight->data, 0));
+      GET_TYPED_DATA(v, double, pRight->type, pRight->data);
       if (getComparFunc(TSDB_DATA_TYPE_DOUBLE, 0)(&v, &u) == 0) {
-        SET_DOUBLE_NULL(output);
+        sclSetNull(pOut, i);
         continue;
       }
 
       double left = getVectorDoubleValueFnLeft(pLeft->data, i);
-      SET_DOUBLE_VAL(output, left - ((int64_t)(left / right)) * right);
+      SET_DOUBLE_VAL(pOut->data, left - ((int64_t)(left / right)) * right);
     }
   }                                                                                                 
 
-  tfree(leftParam.data);
-  tfree(rightParam.data);  
+  sclFreeParam(&leftParam);
+  sclFreeParam(&rightParam);  
 }
 
+#endif
+
 void vectorConcat(SScalarParam* pLeft, SScalarParam* pRight, void *out, int32_t _ord) {
   int32_t len = pLeft->bytes + pRight->bytes;
 
@@ -1119,28 +1196,24 @@ void vectorConcat(SScalarParam* pLeft, SScalarParam* pRight, void *out, int32_t
       varDataSetLen(output, varDataLen(left) + varDataLen(pRight->data));
     }
   }
-
 }
 
 
-void vectorBitAnd(SScalarParam* pLeft, SScalarParam* pRight, void *out, int32_t _ord) {
+void vectorBitAnd(SScalarParam* pLeft, SScalarParam* pRight, SScalarParam *pOut, int32_t _ord) {
   int32_t i = ((_ord) == TSDB_ORDER_ASC) ? 0 : TMAX(pLeft->num, pRight->num) - 1;
   int32_t step = ((_ord) == TSDB_ORDER_ASC) ? 1 : -1;
+  int64_t leftv = 0, rightv = 0;
 
   SScalarParam leftParam = {.type = TSDB_DATA_TYPE_BIGINT, .num = pLeft->num};
   SScalarParam rightParam = {.type = TSDB_DATA_TYPE_BIGINT, .num = pRight->num};
   if (IS_VAR_DATA_TYPE(pLeft->type)) {
     leftParam.data = calloc(leftParam.num, sizeof(int64_t));
     if (NULL == leftParam.data) {
-      sclError("malloc %d failed", (int32_t)(leftParam.num * sizeof(int64_t)));
+      sclError("malloc %d failed", (int32_t)(leftParam.num * sizeof(double)));
       return;
     }
+    leftParam.orig.data = leftParam.data;
 
-    if (pLeft->colData) {
-      SColumnInfoData *colInfo = (SColumnInfoData *)pLeft->data;
-      pLeft->data = colInfo->pData;
-    }
-    
     if (vectorConvertImpl(pLeft, &leftParam)) {
       return;
     }
@@ -1149,80 +1222,95 @@ void vectorBitAnd(SScalarParam* pLeft, SScalarParam* pRight, void *out, int32_t
   if (IS_VAR_DATA_TYPE(pRight->type)) {
     rightParam.data = calloc(rightParam.num, sizeof(int64_t));
     if (NULL == rightParam.data) {
-      sclError("malloc %d failed", (int32_t)(rightParam.num * sizeof(int64_t)));
-      tfree(leftParam.data);
+      sclError("malloc %d failed", (int32_t)(rightParam.num * sizeof(double)));
+      sclFreeParam(&leftParam);
       return;
     }
-    
-    if (pRight->colData) {    
-      SColumnInfoData *colInfo = (SColumnInfoData *)pRight->data;
-      pRight->data = colInfo->pData;
-    }
+    rightParam.orig.data = rightParam.data;
     
     if (vectorConvertImpl(pRight, &rightParam)) {
-      tfree(leftParam.data);
-      tfree(rightParam.data);
+      sclFreeParam(&leftParam);
+      sclFreeParam(&rightParam);
       return;
     }
     pRight = &rightParam;
   }
 
-  int64_t *output=(int64_t *)out;
-  _getValueAddr_fn_t getVectorValueAddrFnLeft = getVectorValueAddrFn(pLeft->type);
-  _getValueAddr_fn_t getVectorValueAddrFnRight = getVectorValueAddrFn(pRight->type);
+
   _getBigintValue_fn_t getVectorBigintValueFnLeft = getVectorBigintValueFn(pLeft->type);
   _getBigintValue_fn_t getVectorBigintValueFnRight = getVectorBigintValueFn(pRight->type);
 
   if (pLeft->num == pRight->num) {
-    for (; i < pRight->num && i >= 0; i += step, output += 1) {
-      if (isNull(getVectorValueAddrFnLeft(pLeft->data, i), pLeft->type) ||
-          isNull(getVectorValueAddrFnRight(pRight->data, i), pRight->type)) {
-        SET_BIGINT_NULL(output);
+    for (; i < pRight->num && i >= 0; i += step) {
+      sclMoveParamListData(pLeft, 1, i);
+      sclMoveParamListData(pRight, 1, i);
+      sclMoveParamListData(pOut, 1, i);
+      
+      if (sclIsNull(pLeft, i) || sclIsNull(pRight, i)) {
+        sclSetNull(pOut, i);
         continue;
       }
 
-      SET_BIGINT_VAL(output, getVectorBigintValueFnLeft(pLeft->data, i) & getVectorBigintValueFnRight(pRight->data, i));
+      GET_TYPED_DATA(leftv, int64_t, pLeft->type, pLeft->data);
+      GET_TYPED_DATA(rightv, int64_t, pRight->type, pRight->data);
+
+      SET_BIGINT_VAL(pOut->data, leftv & rightv);
     }
   } else if (pLeft->num == 1) {
-    for (; i >= 0 && i < pRight->num; i += step, output += 1) {
-      if (isNull(getVectorValueAddrFnLeft(pLeft->data, 0), pLeft->type) || isNull(getVectorValueAddrFnRight(pRight->data,i), pRight->type)) {
-        SET_BIGINT_NULL(output);
+    sclMoveParamListData(pLeft, 1, 0);
+    GET_TYPED_DATA(leftv, int64_t, pLeft->type, pLeft->data);
+  
+    for (; i >= 0 && i < pRight->num; i += step) {
+      sclMoveParamListData(pRight, 1, i);
+      sclMoveParamListData(pOut, 1, i);
+      
+      if (sclIsNull(pLeft, 0) || sclIsNull(pRight, i)) {
+        sclSetNull(pOut, i);
         continue;
       }
-      SET_BIGINT_VAL(output,getVectorBigintValueFnLeft(pLeft->data, 0) & getVectorBigintValueFnRight(pRight->data,i));
+
+      GET_TYPED_DATA(rightv, int64_t, pRight->type, pRight->data);
+      
+      SET_BIGINT_VAL(pOut->data, leftv & rightv);
     }
   } else if (pRight->num == 1) {
-    for (; i >= 0 && i < pLeft->num; i += step, output += 1) {
-      if (isNull(getVectorValueAddrFnLeft(pLeft->data,i), pLeft->type) || isNull(getVectorValueAddrFnRight(pRight->data,0), pRight->type)) {
-        SET_BIGINT_NULL(output);
+    sclMoveParamListData(pRight, 1, 0);
+    GET_TYPED_DATA(rightv, int64_t, pRight->type, pRight->data);
+  
+    for (; i >= 0 && i < pLeft->num; i += step) {
+      sclMoveParamListData(pLeft, 1, i);
+      sclMoveParamListData(pOut, 1, i);
+      
+      if (sclIsNull(pLeft, i) || sclIsNull(pRight, 0)) {
+        sclSetNull(pOut, i);
         continue;
       }
-      SET_BIGINT_VAL(output,getVectorBigintValueFnLeft(pLeft->data,i) & getVectorBigintValueFnRight(pRight->data,0));
+
+      GET_TYPED_DATA(leftv, int64_t, pLeft->type, pLeft->data);
+
+      SET_BIGINT_VAL(pOut->data, leftv & rightv);
     }
   }
 
-  tfree(leftParam.data);
-  tfree(rightParam.data);  
+  sclFreeParam(&leftParam);
+  sclFreeParam(&rightParam);  
 }
 
-void vectorBitOr(SScalarParam* pLeft, SScalarParam* pRight, void *out, int32_t _ord) {
+void vectorBitOr(SScalarParam* pLeft, SScalarParam* pRight, SScalarParam *pOut, int32_t _ord) {
   int32_t i = ((_ord) == TSDB_ORDER_ASC) ? 0 : TMAX(pLeft->num, pRight->num) - 1;
   int32_t step = ((_ord) == TSDB_ORDER_ASC) ? 1 : -1;
+  int64_t leftv = 0, rightv = 0;
 
   SScalarParam leftParam = {.type = TSDB_DATA_TYPE_BIGINT, .num = pLeft->num};
   SScalarParam rightParam = {.type = TSDB_DATA_TYPE_BIGINT, .num = pRight->num};
   if (IS_VAR_DATA_TYPE(pLeft->type)) {
     leftParam.data = calloc(leftParam.num, sizeof(int64_t));
     if (NULL == leftParam.data) {
-      sclError("malloc %d failed", (int32_t)(leftParam.num * sizeof(int64_t)));
+      sclError("malloc %d failed", (int32_t)(leftParam.num * sizeof(double)));
       return;
     }
+    leftParam.orig.data = leftParam.data;
 
-    if (pLeft->colData) {
-      SColumnInfoData *colInfo = (SColumnInfoData *)pLeft->data;
-      pLeft->data = colInfo->pData;
-    }
-    
     if (vectorConvertImpl(pLeft, &leftParam)) {
       return;
     }
@@ -1231,131 +1319,139 @@ void vectorBitOr(SScalarParam* pLeft, SScalarParam* pRight, void *out, int32_t _
   if (IS_VAR_DATA_TYPE(pRight->type)) {
     rightParam.data = calloc(rightParam.num, sizeof(int64_t));
     if (NULL == rightParam.data) {
-      sclError("malloc %d failed", (int32_t)(rightParam.num * sizeof(int64_t)));
-      tfree(leftParam.data);
+      sclError("malloc %d failed", (int32_t)(rightParam.num * sizeof(double)));
+      sclFreeParam(&leftParam);
       return;
     }
-
-    if (pRight->colData) {    
-      SColumnInfoData *colInfo = (SColumnInfoData *)pRight->data;
-      pRight->data = colInfo->pData;
-    }
+    rightParam.orig.data = rightParam.data;
     
     if (vectorConvertImpl(pRight, &rightParam)) {
-      tfree(leftParam.data);
-      tfree(rightParam.data);
+      sclFreeParam(&leftParam);
+      sclFreeParam(&rightParam);
       return;
     }
     pRight = &rightParam;
   }
 
-  int64_t *output=(int64_t *)out;
-  _getValueAddr_fn_t getVectorValueAddrFnLeft = getVectorValueAddrFn(pLeft->type);
-  _getValueAddr_fn_t getVectorValueAddrFnRight = getVectorValueAddrFn(pRight->type);
   _getBigintValue_fn_t getVectorBigintValueFnLeft = getVectorBigintValueFn(pLeft->type);
   _getBigintValue_fn_t getVectorBigintValueFnRight = getVectorBigintValueFn(pRight->type);
 
   if (pLeft->num == pRight->num) {
-    for (; i < pRight->num && i >= 0; i += step, output += 1) {
-      if (isNull(getVectorValueAddrFnLeft(pLeft->data, i), pLeft->type) ||
-          isNull(getVectorValueAddrFnRight(pRight->data, i), pRight->type)) {
-        SET_BIGINT_NULL(output);
+    for (; i < pRight->num && i >= 0; i += step) {
+      sclMoveParamListData(pLeft, 1, i);
+      sclMoveParamListData(pRight, 1, i);
+      sclMoveParamListData(pOut, 1, i);
+      
+      if (sclIsNull(pLeft, i) || sclIsNull(pRight, i)) {
+        sclSetNull(pOut, i);
         continue;
       }
 
-      SET_BIGINT_VAL(output, getVectorBigintValueFnLeft(pLeft->data, i) | getVectorBigintValueFnRight(pRight->data, i));
+      GET_TYPED_DATA(leftv, int64_t, pLeft->type, pLeft->data);
+      GET_TYPED_DATA(rightv, int64_t, pRight->type, pRight->data);
+
+      SET_BIGINT_VAL(pOut->data, leftv | rightv);
     }
   } else if (pLeft->num == 1) {
-    for (; i >= 0 && i < pRight->num; i += step, output += 1) {
-      if (isNull(getVectorValueAddrFnLeft(pLeft->data, 0), pLeft->type) || isNull(getVectorValueAddrFnRight(pRight->data,i), pRight->type)) {
-        SET_BIGINT_NULL(output);
+    sclMoveParamListData(pLeft, 1, 0);
+    GET_TYPED_DATA(leftv, int64_t, pLeft->type, pLeft->data);
+  
+    for (; i >= 0 && i < pRight->num; i += step) {
+      sclMoveParamListData(pRight, 1, i);
+      sclMoveParamListData(pOut, 1, i);
+      
+      if (sclIsNull(pLeft, 0) || sclIsNull(pRight, i)) {
+        sclSetNull(pOut, i);
         continue;
       }
-      SET_BIGINT_VAL(output,getVectorBigintValueFnLeft(pLeft->data, 0) | getVectorBigintValueFnRight(pRight->data,i));
+
+      GET_TYPED_DATA(rightv, int64_t, pRight->type, pRight->data);
+      
+      SET_BIGINT_VAL(pOut->data, leftv | rightv);
     }
   } else if (pRight->num == 1) {
-    for (; i >= 0 && i < pLeft->num; i += step, output += 1) {
-      if (isNull(getVectorValueAddrFnLeft(pLeft->data,i), pLeft->type) || isNull(getVectorValueAddrFnRight(pRight->data,0), pRight->type)) {
-        SET_BIGINT_NULL(output);
+    sclMoveParamListData(pRight, 1, 0);
+    GET_TYPED_DATA(rightv, int64_t, pRight->type, pRight->data);
+  
+    for (; i >= 0 && i < pLeft->num; i += step) {
+      sclMoveParamListData(pLeft, 1, i);
+      sclMoveParamListData(pOut, 1, i);
+      
+      if (sclIsNull(pLeft, i) || sclIsNull(pRight, 0)) {
+        sclSetNull(pOut, i);
         continue;
       }
-      SET_BIGINT_VAL(output,getVectorBigintValueFnLeft(pLeft->data,i) | getVectorBigintValueFnRight(pRight->data,0));
+
+      GET_TYPED_DATA(leftv, int64_t, pLeft->type, pLeft->data);
+
+      SET_BIGINT_VAL(pOut->data, leftv | rightv);
     }
   }
 
-  tfree(leftParam.data);
-  tfree(rightParam.data);  
+
+  sclFreeParam(&leftParam);
+  sclFreeParam(&rightParam);  
 }
 
 
-void vectorCompareImpl(SScalarParam* pLeft, SScalarParam* pRight, void *out, int32_t _ord, int32_t optr) {
+void vectorCompareImpl(SScalarParam* pLeft, SScalarParam* pRight, SScalarParam *pOut, int32_t _ord, int32_t optr) {
   int32_t i = ((_ord) == TSDB_ORDER_ASC) ? 0 : TMAX(pLeft->num, pRight->num) - 1;
   int32_t step = ((_ord) == TSDB_ORDER_ASC) ? 1 : -1;
   __compar_fn_t fp = filterGetCompFunc(pLeft->type, optr);
   bool res = false;
-  
-  bool *output=(bool *)out;
-  _getValueAddr_fn_t getVectorValueAddrFnLeft = NULL;
-  _getValueAddr_fn_t getVectorValueAddrFnRight = NULL;
-
-  if (IS_VAR_DATA_TYPE(pLeft->type) && !pLeft->colData) {
-    getVectorValueAddrFnLeft = getVectorValueAddr_default;
-  } else {
-    getVectorValueAddrFnLeft = getVectorValueAddrFn(pLeft->type);
-  }
-
-  if (IS_VAR_DATA_TYPE(pRight->type) && !pRight->colData) {
-    getVectorValueAddrFnRight = getVectorValueAddr_default;
-  } else {
-    getVectorValueAddrFnRight = getVectorValueAddrFn(pRight->type);
-  }
-
 
   if (pLeft->num == pRight->num) {
-    for (; i < pRight->num && i >= 0; i += step, output += 1) {
-      if (isNull(getVectorValueAddrFnLeft(pLeft->data, i), pLeft->type) ||
-          isNull(getVectorValueAddrFnRight(pRight->data, i), pRight->type)) {
-        res = false;
-        SET_TYPED_DATA(output, TSDB_DATA_TYPE_BOOL, res);
+    for (; i < pRight->num && i >= 0; i += step) {
+      sclMoveParamListData(pLeft, 1, i);
+      sclMoveParamListData(pRight, 1, i);
+      sclMoveParamListData(pOut, 1, i);
+      
+      if (sclIsNull(pLeft, i) || sclIsNull(pRight, i)) {
+        sclSetNull(pOut, i);
         continue;
       }
-      
-      res = filterDoCompare(fp, optr, getVectorValueAddrFnLeft(pLeft->data, i), getVectorValueAddrFnRight(pRight->data,i));
 
-      SET_TYPED_DATA(output, TSDB_DATA_TYPE_BOOL, res);
+      res = filterDoCompare(fp, optr, pLeft->data, pRight->data);
+
+      SET_TYPED_DATA(pOut->data, TSDB_DATA_TYPE_BOOL, res);
     }
   } else if (pLeft->num == 1) {
-    void *leftData = getVectorValueAddrFnLeft(pLeft->data, 0);
+    sclMoveParamListData(pLeft, 1, 0);
     
-    for (; i >= 0 && i < pRight->num; i += step, output += 1) {
-      if (isNull(leftData, pLeft->type) || isNull(getVectorValueAddrFnRight(pRight->data,i), pRight->type)) {
-        res = false;
-        SET_TYPED_DATA(output, TSDB_DATA_TYPE_BOOL, res);
+    for (; i >= 0 && i < pRight->num; i += step) {
+      sclMoveParamListData(pRight, 1, i);
+      sclMoveParamListData(pOut, 1, i);
+      
+      if (sclIsNull(pLeft, 0) || sclIsNull(pRight, i)) {
+        sclSetNull(pOut, i);
         continue;
       }
 
-      res = filterDoCompare(fp, optr, leftData, getVectorValueAddrFnRight(pRight->data,i));
 
-      SET_TYPED_DATA(output, TSDB_DATA_TYPE_BOOL, res);
+      res = filterDoCompare(fp, optr, pLeft->data, pRight->data);
+
+      SET_TYPED_DATA(pOut->data, TSDB_DATA_TYPE_BOOL, res);
     }
   } else if (pRight->num == 1) {
-    void *rightData = getVectorValueAddrFnRight(pRight->data, 0);
-
-    for (; i >= 0 && i < pLeft->num; i += step, output += 1) {
-      if (isNull(getVectorValueAddrFnLeft(pLeft->data,i), pLeft->type) || isNull(rightData, pRight->type)) {
-        res = false;
-        SET_TYPED_DATA(output, TSDB_DATA_TYPE_BOOL, res);
+    sclMoveParamListData(pRight, 1, 0);
+  
+    for (; i >= 0 && i < pLeft->num; i += step) {
+      sclMoveParamListData(pLeft, 1, i);
+      sclMoveParamListData(pOut, 1, i);
+      
+      if (sclIsNull(pLeft, i) || sclIsNull(pRight, 0)) {
+        sclSetNull(pOut, i);
         continue;
       }
 
-      res = filterDoCompare(fp, optr, getVectorValueAddrFnLeft(pLeft->data,i), rightData);
+      res = filterDoCompare(fp, optr, pLeft->data, pRight->data);
 
-      SET_TYPED_DATA(output, TSDB_DATA_TYPE_BOOL, res);
+      SET_TYPED_DATA(pOut->data, TSDB_DATA_TYPE_BOOL, res);
     }
   }
 }
 
-void vectorCompare(SScalarParam* pLeft, SScalarParam* pRight, void *out, int32_t _ord, int32_t optr) {
+void vectorCompare(SScalarParam* pLeft, SScalarParam* pRight, SScalarParam *pOut, int32_t _ord, int32_t optr) {
   SScalarParam pLeftOut = {0}; 
   SScalarParam pRightOut = {0};
   
@@ -1377,118 +1473,103 @@ void vectorCompare(SScalarParam* pLeft, SScalarParam* pRight, void *out, int32_t
     param2 = pRight;
   }
 
-  vectorCompareImpl(param1, param2, out, _ord, optr);
+  vectorCompareImpl(param1, param2, pOut, _ord, optr);
+
+  sclFreeParam(&pLeftOut);
+  sclFreeParam(&pRightOut);  
 }
 
-void vectorGreater(SScalarParam* pLeft, SScalarParam* pRight, void *out, int32_t _ord) {
-  vectorCompare(pLeft, pRight, out, _ord, OP_TYPE_GREATER_THAN);
+void vectorGreater(SScalarParam* pLeft, SScalarParam* pRight, SScalarParam *pOut, int32_t _ord) {
+  vectorCompare(pLeft, pRight, pOut, _ord, OP_TYPE_GREATER_THAN);
 }
 
-void vectorGreaterEqual(SScalarParam* pLeft, SScalarParam* pRight, void *out, int32_t _ord) {
-  vectorCompare(pLeft, pRight, out, _ord, OP_TYPE_GREATER_EQUAL);
+void vectorGreaterEqual(SScalarParam* pLeft, SScalarParam* pRight, SScalarParam *pOut, int32_t _ord) {
+  vectorCompare(pLeft, pRight, pOut, _ord, OP_TYPE_GREATER_EQUAL);
 }
 
-void vectorLower(SScalarParam* pLeft, SScalarParam* pRight, void *out, int32_t _ord) {
-  vectorCompare(pLeft, pRight, out, _ord, OP_TYPE_LOWER_THAN);
+void vectorLower(SScalarParam* pLeft, SScalarParam* pRight, SScalarParam *pOut, int32_t _ord) {
+  vectorCompare(pLeft, pRight, pOut, _ord, OP_TYPE_LOWER_THAN);
 }
 
-void vectorLowerEqual(SScalarParam* pLeft, SScalarParam* pRight, void *out, int32_t _ord) {
-  vectorCompare(pLeft, pRight, out, _ord, OP_TYPE_LOWER_EQUAL);
+void vectorLowerEqual(SScalarParam* pLeft, SScalarParam* pRight, SScalarParam *pOut, int32_t _ord) {
+  vectorCompare(pLeft, pRight, pOut, _ord, OP_TYPE_LOWER_EQUAL);
 }
 
-void vectorEqual(SScalarParam* pLeft, SScalarParam* pRight, void *out, int32_t _ord) {
-  vectorCompare(pLeft, pRight, out, _ord, OP_TYPE_EQUAL);
+void vectorEqual(SScalarParam* pLeft, SScalarParam* pRight, SScalarParam *pOut, int32_t _ord) {
+  vectorCompare(pLeft, pRight, pOut, _ord, OP_TYPE_EQUAL);
 }
 
-void vectorNotEqual(SScalarParam* pLeft, SScalarParam* pRight, void *out, int32_t _ord) {
-  vectorCompare(pLeft, pRight, out, _ord, OP_TYPE_NOT_EQUAL);
+void vectorNotEqual(SScalarParam* pLeft, SScalarParam* pRight, SScalarParam *pOut, int32_t _ord) {
+  vectorCompare(pLeft, pRight, pOut, _ord, OP_TYPE_NOT_EQUAL);
 }
 
-void vectorIn(SScalarParam* pLeft, SScalarParam* pRight, void *out, int32_t _ord) {
-  vectorCompare(pLeft, pRight, out, _ord, OP_TYPE_IN);
+void vectorIn(SScalarParam* pLeft, SScalarParam* pRight, SScalarParam *pOut, int32_t _ord) {
+  vectorCompare(pLeft, pRight, pOut, _ord, OP_TYPE_IN);
 }
 
-void vectorNotIn(SScalarParam* pLeft, SScalarParam* pRight, void *out, int32_t _ord) {
-  vectorCompare(pLeft, pRight, out, _ord, OP_TYPE_NOT_IN);
+void vectorNotIn(SScalarParam* pLeft, SScalarParam* pRight, SScalarParam *pOut, int32_t _ord) {
+  vectorCompare(pLeft, pRight, pOut, _ord, OP_TYPE_NOT_IN);
 }
 
-void vectorLike(SScalarParam* pLeft, SScalarParam* pRight, void *out, int32_t _ord) {
-  vectorCompare(pLeft, pRight, out, _ord, OP_TYPE_LIKE);
+void vectorLike(SScalarParam* pLeft, SScalarParam* pRight, SScalarParam *pOut, int32_t _ord) {
+  vectorCompare(pLeft, pRight, pOut, _ord, OP_TYPE_LIKE);
 }
 
-void vectorNotLike(SScalarParam* pLeft, SScalarParam* pRight, void *out, int32_t _ord) {
-  vectorCompare(pLeft, pRight, out, _ord, OP_TYPE_NOT_LIKE);
+void vectorNotLike(SScalarParam* pLeft, SScalarParam* pRight, SScalarParam *pOut, int32_t _ord) {
+  vectorCompare(pLeft, pRight, pOut, _ord, OP_TYPE_NOT_LIKE);
 }
 
-void vectorMatch(SScalarParam* pLeft, SScalarParam* pRight, void *out, int32_t _ord) {
-  vectorCompare(pLeft, pRight, out, _ord, OP_TYPE_MATCH);
+void vectorMatch(SScalarParam* pLeft, SScalarParam* pRight, SScalarParam *pOut, int32_t _ord) {
+  vectorCompare(pLeft, pRight, pOut, _ord, OP_TYPE_MATCH);
 }
 
-void vectorNotMatch(SScalarParam* pLeft, SScalarParam* pRight, void *out, int32_t _ord) {
-  vectorCompare(pLeft, pRight, out, _ord, OP_TYPE_NMATCH);
+void vectorNotMatch(SScalarParam* pLeft, SScalarParam* pRight, SScalarParam *pOut, int32_t _ord) {
+  vectorCompare(pLeft, pRight, pOut, _ord, OP_TYPE_NMATCH);
 }
 
-void vectorIsNull(SScalarParam* pLeft, SScalarParam* pRight, void *out, int32_t _ord) {
+void vectorIsNull(SScalarParam* pLeft, SScalarParam* pRight, SScalarParam *pOut, int32_t _ord) {
   int32_t i = ((_ord) == TSDB_ORDER_ASC) ? 0 : TMAX(pLeft->num, pRight->num) - 1;
   int32_t step = ((_ord) == TSDB_ORDER_ASC) ? 1 : -1;
   bool res = false;
   
-  bool *output=(bool *)out;
-  _getValueAddr_fn_t getVectorValueAddrFnLeft = NULL;
-
-  if (IS_VAR_DATA_TYPE(pLeft->type) && !pLeft->colData) {
-    getVectorValueAddrFnLeft = getVectorValueAddr_default;
-  } else {
-    getVectorValueAddrFnLeft = getVectorValueAddrFn(pLeft->type);
-  }
-
-  for (; i >= 0 && i < pLeft->num; i += step, output += 1) {
-    if (isNull(getVectorValueAddrFnLeft(pLeft->data,i), pLeft->type)) {
+  for (; i >= 0 && i < pLeft->num; i += step) {
+    sclMoveParamListData(pLeft, 1, i);
+    sclMoveParamListData(pOut, 1, i);
+    
+    if (sclIsNull(pLeft, i)) {
       res = true;
-      SET_TYPED_DATA(output, TSDB_DATA_TYPE_BOOL, res);
+      SET_TYPED_DATA(pOut->data, TSDB_DATA_TYPE_BOOL, res);
       continue;
     }
 
     res = false;
-    SET_TYPED_DATA(output, TSDB_DATA_TYPE_BOOL, res);
+    SET_TYPED_DATA(pOut->data, TSDB_DATA_TYPE_BOOL, res);
   }
 }
 
-void vectorNotNull(SScalarParam* pLeft, SScalarParam* pRight, void *out, int32_t _ord) {
+void vectorNotNull(SScalarParam* pLeft, SScalarParam* pRight, SScalarParam *pOut, int32_t _ord) {
   int32_t i = ((_ord) == TSDB_ORDER_ASC) ? 0 : TMAX(pLeft->num, pRight->num) - 1;
   int32_t step = ((_ord) == TSDB_ORDER_ASC) ? 1 : -1;
   bool res = false;
-  
-  bool *output = (bool *)out;
-  _getValueAddr_fn_t getVectorValueAddrFnLeft = NULL;
 
-  if (IS_VAR_DATA_TYPE(pLeft->type) && !pLeft->colData) {
-    getVectorValueAddrFnLeft = getVectorValueAddr_default;
-  } else {
-    getVectorValueAddrFnLeft = getVectorValueAddrFn(pLeft->type);
-  }
-
-  for (; i >= 0 && i < pLeft->num; i += step, output += 1) {
-    if (isNull(getVectorValueAddrFnLeft(pLeft->data,i), pLeft->type)) {
+  for (; i >= 0 && i < pLeft->num; i += step) {
+    sclMoveParamListData(pLeft, 1, i);
+    sclMoveParamListData(pOut, 1, i);
+    
+    if (sclIsNull(pLeft, i)) {
       res = false;
-      SET_TYPED_DATA(output, TSDB_DATA_TYPE_BOOL, res);
+      SET_TYPED_DATA(pOut->data, TSDB_DATA_TYPE_BOOL, res);
       continue;
     }
 
     res = true;
-    SET_TYPED_DATA(output, TSDB_DATA_TYPE_BOOL, res);
+    SET_TYPED_DATA(pOut->data, TSDB_DATA_TYPE_BOOL, res);
   }
-}
 
-void vectorIsTrue(SScalarParam* pLeft, SScalarParam* pRight, void *out, int32_t _ord) {
-  SScalarParam output = {.data = out, .num = pLeft->num, .type = TSDB_DATA_TYPE_BOOL};
+}
 
-  if (pLeft->colData) {
-    SColumnInfoData *colInfo = (SColumnInfoData *)pLeft->data;
-    pLeft->data = colInfo->pData;
-  }
-  
-  vectorConvertImpl(pLeft, &output);
+void vectorIsTrue(SScalarParam* pLeft, SScalarParam* pRight, SScalarParam *pOut, int32_t _ord) {
+  vectorConvertImpl(pLeft, pOut);
 }
 
 
diff --git a/source/libs/scalar/test/filter/filterTests.cpp b/source/libs/scalar/test/filter/filterTests.cpp
index a0618cc6624676b89f2586747952a3451a09b5b3..fafc1ea42e860a8c410d75c1e58738f3c1e9d79e 100644
--- a/source/libs/scalar/test/filter/filterTests.cpp
+++ b/source/libs/scalar/test/filter/filterTests.cpp
@@ -51,6 +51,7 @@ void flttInitLogFile() {
 
   tsAsyncLog = 0;
   qDebugFlag = 159;
+  strcpy(tsLogDir, "/var/log/taos");
 
   if (taosInitLog(defaultLogFileNamePrefix, maxLogFileNum) < 0) {
     printf("failed to open log file in directory:%s\n", tsLogDir);
@@ -75,16 +76,20 @@ void flttMakeValueNode(SNode **pNode, int32_t dataType, void *value) {
   *pNode = (SNode *)vnode;
 }
 
-void flttMakeColRefNode(SNode **pNode, SSDataBlock **block, int32_t dataType, int32_t dataBytes, int32_t rowNum, void *value) {
+void flttMakeColumnNode(SNode **pNode, SSDataBlock **block, int32_t dataType, int32_t dataBytes, int32_t rowNum, void *value) {
+  static uint64_t dbidx = 0;
+  
   SNode *node = nodesMakeNode(QUERY_NODE_COLUMN);
   SColumnNode *rnode = (SColumnNode *)node;
   rnode->node.resType.type = dataType;
   rnode->node.resType.bytes = dataBytes;
   rnode->dataBlockId = 0;
+  
+  sprintf(rnode->dbName, "%" PRIu64, dbidx++);
 
   if (NULL == block) {
     rnode->slotId = 2;
-    rnode->colId = 55;
+    rnode->colId = 3;
     *pNode = (SNode *)rnode;
 
     return;
@@ -99,7 +104,7 @@ void flttMakeColRefNode(SNode **pNode, SSDataBlock **block, int32_t dataType, in
       SColumnInfoData idata = {{0}};
       idata.info.type  = TSDB_DATA_TYPE_NULL;
       idata.info.bytes = 10;
-      idata.info.colId = 0;
+      idata.info.colId = i + 1;
 
       int32_t size = idata.info.bytes * rowNum;
       idata.pData = (char *)calloc(1, size);
@@ -109,18 +114,25 @@ void flttMakeColRefNode(SNode **pNode, SSDataBlock **block, int32_t dataType, in
     SColumnInfoData idata = {{0}};
     idata.info.type  = dataType;
     idata.info.bytes = dataBytes;
-    idata.info.colId = 55;
-    idata.pData = (char *)value;
-    if (IS_VAR_DATA_TYPE(dataType)) {
-      idata.varmeta.offset = (int32_t *)calloc(rowNum, sizeof(int32_t));
-      for (int32_t i = 0; i < rowNum; ++i) {
-        idata.varmeta.offset[i] = (dataBytes + VARSTR_HEADER_SIZE) * i;
+    idata.info.colId = 3;
+    int32_t size = idata.info.bytes * rowNum;
+    idata.pData = (char *)calloc(1, size);
+    taosArrayPush(res->pDataBlock, &idata);
+    
+    blockDataEnsureCapacity(res, rowNum);
+
+    SColumnInfoData *pColumn = (SColumnInfoData *)taosArrayGetLast(res->pDataBlock);
+    for (int32_t i = 0; i < rowNum; ++i) {
+      colDataAppend(pColumn, i, (const char *)value, false);
+      if (IS_VAR_DATA_TYPE(dataType)) {
+        value = (char *)value + varDataTLen(value);
+      } else {
+        value = (char *)value + dataBytes;
       }
     }
-    taosArrayPush(res->pDataBlock, &idata);
 
     rnode->slotId = 2;
-    rnode->colId = 55;
+    rnode->colId = 3;
 
     *block = res;
   } else {
@@ -130,14 +142,26 @@ void flttMakeColRefNode(SNode **pNode, SSDataBlock **block, int32_t dataType, in
     SColumnInfoData idata = {{0}};
     idata.info.type  = dataType;
     idata.info.bytes = dataBytes;
-    idata.info.colId = 55 + idx;
-    idata.pData = (char *)value;
+    idata.info.colId = 1 + idx;
+    int32_t size = idata.info.bytes * rowNum;
+    idata.pData = (char *)calloc(1, size);
     taosArrayPush(res->pDataBlock, &idata);
-
     res->info.numOfCols++;
+    SColumnInfoData *pColumn = (SColumnInfoData *)taosArrayGetLast(res->pDataBlock);
+    
+    blockDataEnsureColumnCapacity(pColumn, rowNum);
+
+    for (int32_t i = 0; i < rowNum; ++i) {
+      colDataAppend(pColumn, i, (const char *)value, false);
+      if (IS_VAR_DATA_TYPE(dataType)) {
+        value = (char *)value + varDataTLen(value);
+      } else {
+        value = (char *)value + dataBytes;
+      }
+    }
     
     rnode->slotId = idx;
-    rnode->colId = 55 + idx;
+    rnode->colId = 1 + idx;
   }
 
   *pNode = (SNode *)rnode;
@@ -196,11 +220,11 @@ void flttMakeListNode(SNode **pNode, SNodeList *list, int32_t resType) {
 }
 
 TEST(timerangeTest, greater) {
-  SNode *pcol = NULL, *pval = NULL, *opNode1 = NULL, *opNode2 = NULL, *logicNode = NULL;
+  SNode *pcol = NULL, *pval = NULL, *opNode1 = NULL;
   bool eRes[5] = {false, false, true, true, true};
   SScalarParam res = {0};
   int64_t tsmall = 222, tbig = 333;
-  flttMakeColRefNode(&pcol, NULL, TSDB_DATA_TYPE_TIMESTAMP, sizeof(int64_t), 0, NULL);  
+  flttMakeColumnNode(&pcol, NULL, TSDB_DATA_TYPE_TIMESTAMP, sizeof(int64_t), 0, NULL);  
   flttMakeValueNode(&pval, TSDB_DATA_TYPE_TIMESTAMP, &tsmall);
   flttMakeOpNode(&opNode1, OP_TYPE_GREATER_THAN, TSDB_DATA_TYPE_BOOL, pcol, pval);
 
@@ -212,6 +236,8 @@ TEST(timerangeTest, greater) {
   ASSERT_EQ(code, 0);
   ASSERT_EQ(win.skey, tsmall);
   ASSERT_EQ(win.ekey, INT64_MAX); 
+  filterFreeInfo(filter);
+  nodesDestroyNode(opNode1);
 }
 
 TEST(timerangeTest, greater_and_lower) {
@@ -219,10 +245,10 @@ TEST(timerangeTest, greater_and_lower) {
   bool eRes[5] = {false, false, true, true, true};
   SScalarParam res = {0};
   int64_t tsmall = 222, tbig = 333;
-  flttMakeColRefNode(&pcol, NULL, TSDB_DATA_TYPE_TIMESTAMP, sizeof(int64_t), 0, NULL);  
+  flttMakeColumnNode(&pcol, NULL, TSDB_DATA_TYPE_TIMESTAMP, sizeof(int64_t), 0, NULL);  
   flttMakeValueNode(&pval, TSDB_DATA_TYPE_TIMESTAMP, &tsmall);
   flttMakeOpNode(&opNode1, OP_TYPE_GREATER_THAN, TSDB_DATA_TYPE_BOOL, pcol, pval);
-  flttMakeColRefNode(&pcol, NULL, TSDB_DATA_TYPE_TIMESTAMP, sizeof(int64_t), 0, NULL);  
+  flttMakeColumnNode(&pcol, NULL, TSDB_DATA_TYPE_TIMESTAMP, sizeof(int64_t), 0, NULL);  
   flttMakeValueNode(&pval, TSDB_DATA_TYPE_TIMESTAMP, &tbig);
   flttMakeOpNode(&opNode2, OP_TYPE_LOWER_THAN, TSDB_DATA_TYPE_BOOL, pcol, pval);
   SNode *list[2] = {0};
@@ -239,6 +265,8 @@ TEST(timerangeTest, greater_and_lower) {
   ASSERT_EQ(code, 0);
   ASSERT_EQ(win.skey, tsmall);
   ASSERT_EQ(win.ekey, tbig); 
+  filterFreeInfo(filter);
+  nodesDestroyNode(logicNode);
 }
 
 
@@ -250,7 +278,7 @@ TEST(columnTest, smallint_column_greater_double_value) {
   SSDataBlock *src = NULL;
   SScalarParam res = {0};
   int32_t rowNum = sizeof(leftv)/sizeof(leftv[0]);
-  flttMakeColRefNode(&pLeft, &src, TSDB_DATA_TYPE_SMALLINT, sizeof(int16_t), rowNum, leftv);
+  flttMakeColumnNode(&pLeft, &src, TSDB_DATA_TYPE_SMALLINT, sizeof(int16_t), rowNum, leftv);
   flttMakeValueNode(&pRight, TSDB_DATA_TYPE_DOUBLE, &rightv);
   flttMakeOpNode(&opNode, OP_TYPE_GREATER_THAN, TSDB_DATA_TYPE_BOOL, pLeft, pRight);
   
@@ -291,6 +319,10 @@ TEST(columnTest, smallint_column_greater_double_value) {
   for (int32_t i = 0; i < rowNum; ++i) {
     ASSERT_EQ(*((int8_t *)rowRes + i), eRes[i]);
   }
+  tfree(rowRes);
+  filterFreeInfo(filter);
+  blockDataDestroy(src);
+  nodesDestroyNode(opNode);
 }
 
 TEST(columnTest, int_column_greater_smallint_value) {
@@ -301,7 +333,7 @@ TEST(columnTest, int_column_greater_smallint_value) {
   SSDataBlock *src = NULL;
   SScalarParam res = {0};
   int32_t rowNum = sizeof(leftv)/sizeof(leftv[0]);
-  flttMakeColRefNode(&pLeft, &src, TSDB_DATA_TYPE_INT, sizeof(int32_t), rowNum, leftv);
+  flttMakeColumnNode(&pLeft, &src, TSDB_DATA_TYPE_INT, sizeof(int32_t), rowNum, leftv);
   flttMakeValueNode(&pRight, TSDB_DATA_TYPE_SMALLINT, &rightv);
   flttMakeOpNode(&opNode, OP_TYPE_GREATER_THAN, TSDB_DATA_TYPE_BOOL, pLeft, pRight);
   
@@ -342,6 +374,10 @@ TEST(columnTest, int_column_greater_smallint_value) {
   for (int32_t i = 0; i < rowNum; ++i) {
     ASSERT_EQ(*((int8_t *)rowRes + i), eRes[i]);
   }
+  tfree(rowRes);
+  filterFreeInfo(filter);
+  nodesDestroyNode(opNode);
+  blockDataDestroy(src);
 }
 
 
@@ -353,7 +389,7 @@ TEST(columnTest, int_column_in_double_list) {
   SSDataBlock *src = NULL;  
   SScalarParam res = {0};
   int32_t rowNum = sizeof(leftv)/sizeof(leftv[0]);
-  flttMakeColRefNode(&pLeft, &src, TSDB_DATA_TYPE_INT, sizeof(int32_t), rowNum, leftv);  
+  flttMakeColumnNode(&pLeft, &src, TSDB_DATA_TYPE_INT, sizeof(int32_t), rowNum, leftv);  
   SNodeList* list = nodesMakeList();
   flttMakeValueNode(&pRight, TSDB_DATA_TYPE_DOUBLE, &rightv1);
   nodesListAppend(list, pRight);
@@ -384,7 +420,10 @@ TEST(columnTest, int_column_in_double_list) {
     ASSERT_EQ(*((int8_t *)rowRes + i), eRes[i]);
   }
 
-  
+  tfree(rowRes);
+  filterFreeInfo(filter);
+  nodesDestroyNode(opNode);
+  blockDataDestroy(src);
 }
 
 
@@ -416,7 +455,7 @@ TEST(columnTest, binary_column_in_binary_list) {
   }
   
   int32_t rowNum = sizeof(leftv)/sizeof(leftv[0]);
-  flttMakeColRefNode(&pLeft, &src, TSDB_DATA_TYPE_BINARY, 3, rowNum, leftv);  
+  flttMakeColumnNode(&pLeft, &src, TSDB_DATA_TYPE_BINARY, 3, rowNum, leftv);  
   SNodeList* list = nodesMakeList();
   flttMakeValueNode(&pRight, TSDB_DATA_TYPE_BINARY, rightv[0]);
   nodesListAppend(list, pRight);
@@ -446,6 +485,10 @@ TEST(columnTest, binary_column_in_binary_list) {
   for (int32_t i = 0; i < rowNum; ++i) {
     ASSERT_EQ(*((int8_t *)rowRes + i), eRes[i]);
   }
+  tfree(rowRes);
+  filterFreeInfo(filter);
+  nodesDestroyNode(opNode);
+  blockDataDestroy(src);
 }
 
 
@@ -465,7 +508,7 @@ TEST(columnTest, binary_column_like_binary) {
   }  
   
   int32_t rowNum = sizeof(leftv)/sizeof(leftv[0]);
-  flttMakeColRefNode(&pLeft, &src, TSDB_DATA_TYPE_BINARY, 3, rowNum, leftv);  
+  flttMakeColumnNode(&pLeft, &src, TSDB_DATA_TYPE_BINARY, 3, rowNum, leftv);  
 
   sprintf(&rightv[2], "%s", "__0");
   varDataSetLen(rightv, strlen(&rightv[2]));
@@ -491,6 +534,10 @@ TEST(columnTest, binary_column_like_binary) {
   for (int32_t i = 0; i < rowNum; ++i) {
     ASSERT_EQ(*((int8_t *)rowRes + i), eRes[i]);
   }
+  tfree(rowRes);
+  filterFreeInfo(filter);
+  nodesDestroyNode(opNode);
+  blockDataDestroy(src);
 }
 
 
@@ -499,20 +546,21 @@ TEST(columnTest, binary_column_is_null) {
   char leftv[5][5]= {0};
   SSDataBlock *src = NULL;  
   SScalarParam res = {0};
-  bool eRes[5] = {false, false, false, false, true};  
+  bool eRes[5] = {false, false, true, false, true};  
   
-  for (int32_t i = 0; i < 4; ++i) {
+  for (int32_t i = 0; i < 5; ++i) {
     leftv[i][2] = '0' + i % 2;
     leftv[i][3] = 'a';
     leftv[i][4] = '0' + i % 2;
     varDataSetLen(leftv[i], 3);
   }  
-
-  setVardataNull(leftv[4], TSDB_DATA_TYPE_BINARY);
   
   int32_t rowNum = sizeof(leftv)/sizeof(leftv[0]);
-  flttMakeColRefNode(&pLeft, &src, TSDB_DATA_TYPE_BINARY, 3, rowNum, leftv);  
+  flttMakeColumnNode(&pLeft, &src, TSDB_DATA_TYPE_BINARY, 3, rowNum, leftv);  
 
+  SColumnInfoData *pcolumn = (SColumnInfoData *)taosArrayGetLast(src->pDataBlock);
+  colDataAppend(pcolumn, 2, NULL, true);
+  colDataAppend(pcolumn, 4, NULL, true);
   flttMakeOpNode(&opNode, OP_TYPE_IS_NULL, TSDB_DATA_TYPE_BOOL, pLeft, NULL);
   
   SFilterInfo *filter = NULL;
@@ -534,6 +582,10 @@ TEST(columnTest, binary_column_is_null) {
   for (int32_t i = 0; i < rowNum; ++i) {
     ASSERT_EQ(*((int8_t *)rowRes + i), eRes[i]);
   }
+  tfree(rowRes);
+  filterFreeInfo(filter);
+  nodesDestroyNode(opNode);
+  blockDataDestroy(src);
 }
 
 TEST(columnTest, binary_column_is_not_null) {
@@ -543,17 +595,18 @@ TEST(columnTest, binary_column_is_not_null) {
   SScalarParam res = {0};
   bool eRes[5] = {true, true, true, true, false};  
   
-  for (int32_t i = 0; i < 4; ++i) {
+  for (int32_t i = 0; i < 5; ++i) {
     leftv[i][2] = '0' + i % 2;
     leftv[i][3] = 'a';
     leftv[i][4] = '0' + i % 2;
     varDataSetLen(leftv[i], 3);
   }  
-
-  setVardataNull(leftv[4], TSDB_DATA_TYPE_BINARY);
   
   int32_t rowNum = sizeof(leftv)/sizeof(leftv[0]);
-  flttMakeColRefNode(&pLeft, &src, TSDB_DATA_TYPE_BINARY, 3, rowNum, leftv);  
+  flttMakeColumnNode(&pLeft, &src, TSDB_DATA_TYPE_BINARY, 3, rowNum, leftv);  
+
+  SColumnInfoData *pcolumn = (SColumnInfoData *)taosArrayGetLast(src->pDataBlock);
+  colDataAppend(pcolumn, 4, NULL, true);
 
   flttMakeOpNode(&opNode, OP_TYPE_IS_NOT_NULL, TSDB_DATA_TYPE_BOOL, pLeft, NULL);
   
@@ -576,6 +629,10 @@ TEST(columnTest, binary_column_is_not_null) {
   for (int32_t i = 0; i < rowNum; ++i) {
     ASSERT_EQ(*((int8_t *)rowRes + i), eRes[i]);
   }
+  tfree(rowRes);
+  filterFreeInfo(filter);
+  nodesDestroyNode(opNode);
+  blockDataDestroy(src);
 }
 
 
@@ -588,8 +645,8 @@ TEST(opTest, smallint_column_greater_int_column) {
   SSDataBlock *src = NULL;
   SScalarParam res = {0};
   int32_t rowNum = sizeof(rightv)/sizeof(rightv[0]);
-  flttMakeColRefNode(&pLeft, &src, TSDB_DATA_TYPE_SMALLINT, sizeof(int16_t), rowNum, leftv);
-  flttMakeColRefNode(&pRight, &src, TSDB_DATA_TYPE_INT, sizeof(int32_t), rowNum, rightv);
+  flttMakeColumnNode(&pLeft, &src, TSDB_DATA_TYPE_SMALLINT, sizeof(int16_t), rowNum, leftv);
+  flttMakeColumnNode(&pRight, &src, TSDB_DATA_TYPE_INT, sizeof(int32_t), rowNum, rightv);
   flttMakeOpNode(&opNode, OP_TYPE_GREATER_THAN, TSDB_DATA_TYPE_BOOL, pLeft, pRight);
   
   SFilterInfo *filter = NULL;
@@ -611,6 +668,10 @@ TEST(opTest, smallint_column_greater_int_column) {
   for (int32_t i = 0; i < rowNum; ++i) {
     ASSERT_EQ(*((int8_t *)rowRes + i), eRes[i]);
   }
+  tfree(rowRes);
+  filterFreeInfo(filter);
+  nodesDestroyNode(opNode);
+  blockDataDestroy(src);
 }
 
 
@@ -623,7 +684,7 @@ TEST(opTest, smallint_value_add_int_column) {
   SScalarParam res = {0};
   int32_t rowNum = sizeof(rightv)/sizeof(rightv[0]);
   flttMakeValueNode(&pLeft, TSDB_DATA_TYPE_INT, &leftv);
-  flttMakeColRefNode(&pRight, &src, TSDB_DATA_TYPE_SMALLINT, sizeof(int16_t), rowNum, rightv);
+  flttMakeColumnNode(&pRight, &src, TSDB_DATA_TYPE_SMALLINT, sizeof(int16_t), rowNum, rightv);
   flttMakeOpNode(&opNode, OP_TYPE_ADD, TSDB_DATA_TYPE_DOUBLE, pLeft, pRight);
   flttMakeOpNode(&opNode, OP_TYPE_IS_TRUE, TSDB_DATA_TYPE_BOOL, opNode, NULL);
   
@@ -646,6 +707,10 @@ TEST(opTest, smallint_value_add_int_column) {
   for (int32_t i = 0; i < rowNum; ++i) {
     ASSERT_EQ(*((int8_t *)rowRes + i), eRes[i]);
   }
+  tfree(rowRes);
+  filterFreeInfo(filter);
+  nodesDestroyNode(opNode);
+  blockDataDestroy(src);
 }
 
 
@@ -663,8 +728,8 @@ TEST(opTest, bigint_column_multi_binary_column) {
   SSDataBlock *src = NULL;
   SScalarParam res = {0};
   int32_t rowNum = sizeof(rightv)/sizeof(rightv[0]);
-  flttMakeColRefNode(&pLeft, &src, TSDB_DATA_TYPE_BIGINT, sizeof(int64_t), rowNum, leftv);
-  flttMakeColRefNode(&pRight, &src, TSDB_DATA_TYPE_BINARY, 5, rowNum, rightv);
+  flttMakeColumnNode(&pLeft, &src, TSDB_DATA_TYPE_BIGINT, sizeof(int64_t), rowNum, leftv);
+  flttMakeColumnNode(&pRight, &src, TSDB_DATA_TYPE_BINARY, 5, rowNum, rightv);
   flttMakeOpNode(&opNode, OP_TYPE_MULTI, TSDB_DATA_TYPE_DOUBLE, pLeft, pRight);
   flttMakeOpNode(&opNode, OP_TYPE_IS_TRUE, TSDB_DATA_TYPE_BOOL, opNode, NULL);
   
@@ -687,6 +752,10 @@ TEST(opTest, bigint_column_multi_binary_column) {
   for (int32_t i = 0; i < rowNum; ++i) {
     ASSERT_EQ(*((int8_t *)rowRes + i), eRes[i]);
   }
+  tfree(rowRes);
+  filterFreeInfo(filter);
+  nodesDestroyNode(opNode);
+  blockDataDestroy(src);
 }
 
 TEST(opTest, smallint_column_and_binary_column) {
@@ -702,8 +771,8 @@ TEST(opTest, smallint_column_and_binary_column) {
   SSDataBlock *src = NULL;
   SScalarParam res = {0};
   int32_t rowNum = sizeof(rightv)/sizeof(rightv[0]);
-  flttMakeColRefNode(&pLeft, &src, TSDB_DATA_TYPE_SMALLINT, sizeof(int16_t), rowNum, leftv);
-  flttMakeColRefNode(&pRight, &src, TSDB_DATA_TYPE_BINARY, 5, rowNum, rightv);
+  flttMakeColumnNode(&pLeft, &src, TSDB_DATA_TYPE_SMALLINT, sizeof(int16_t), rowNum, leftv);
+  flttMakeColumnNode(&pRight, &src, TSDB_DATA_TYPE_BINARY, 5, rowNum, rightv);
   flttMakeOpNode(&opNode, OP_TYPE_BIT_AND, TSDB_DATA_TYPE_BIGINT, pLeft, pRight);
   flttMakeOpNode(&opNode, OP_TYPE_IS_TRUE, TSDB_DATA_TYPE_BOOL, opNode, NULL);
   
@@ -726,6 +795,10 @@ TEST(opTest, smallint_column_and_binary_column) {
   for (int32_t i = 0; i < rowNum; ++i) {
     ASSERT_EQ(*((int8_t *)rowRes + i), eRes[i]);
   }
+  tfree(rowRes);
+  filterFreeInfo(filter);
+  nodesDestroyNode(opNode);
+  blockDataDestroy(src);
 }
 
 TEST(opTest, smallint_column_or_float_column) {
@@ -736,8 +809,8 @@ TEST(opTest, smallint_column_or_float_column) {
   SSDataBlock *src = NULL;
   SScalarParam res = {0};
   int32_t rowNum = sizeof(rightv)/sizeof(rightv[0]);
-  flttMakeColRefNode(&pLeft, &src, TSDB_DATA_TYPE_SMALLINT, sizeof(int16_t), rowNum, leftv);
-  flttMakeColRefNode(&pRight, &src, TSDB_DATA_TYPE_FLOAT, sizeof(float), rowNum, rightv);
+  flttMakeColumnNode(&pLeft, &src, TSDB_DATA_TYPE_SMALLINT, sizeof(int16_t), rowNum, leftv);
+  flttMakeColumnNode(&pRight, &src, TSDB_DATA_TYPE_FLOAT, sizeof(float), rowNum, rightv);
   flttMakeOpNode(&opNode, OP_TYPE_BIT_OR, TSDB_DATA_TYPE_BIGINT, pLeft, pRight);
   flttMakeOpNode(&opNode, OP_TYPE_IS_TRUE, TSDB_DATA_TYPE_BOOL, opNode, NULL);
   
@@ -760,6 +833,10 @@ TEST(opTest, smallint_column_or_float_column) {
   for (int32_t i = 0; i < rowNum; ++i) {
     ASSERT_EQ(*((int8_t *)rowRes + i), eRes[i]);
   }
+  tfree(rowRes);
+  filterFreeInfo(filter);
+  nodesDestroyNode(opNode);
+  blockDataDestroy(src);
 }
 
 
@@ -772,7 +849,7 @@ TEST(opTest, smallint_column_or_double_value) {
   SSDataBlock *src = NULL;
   SScalarParam res = {0};
   int32_t rowNum = sizeof(leftv)/sizeof(leftv[0]);
-  flttMakeColRefNode(&pLeft, &src, TSDB_DATA_TYPE_SMALLINT, sizeof(int16_t), rowNum, leftv);
+  flttMakeColumnNode(&pLeft, &src, TSDB_DATA_TYPE_SMALLINT, sizeof(int16_t), rowNum, leftv);
   flttMakeValueNode(&pRight, TSDB_DATA_TYPE_DOUBLE, &rightv);
   flttMakeOpNode(&opNode, OP_TYPE_BIT_OR, TSDB_DATA_TYPE_BIGINT, pLeft, pRight);
   flttMakeOpNode(&opNode, OP_TYPE_IS_TRUE, TSDB_DATA_TYPE_BOOL, opNode, NULL);
@@ -796,6 +873,10 @@ TEST(opTest, smallint_column_or_double_value) {
   for (int32_t i = 0; i < rowNum; ++i) {
     ASSERT_EQ(*((int8_t *)rowRes + i), eRes[i]);
   }
+  tfree(rowRes);
+  filterFreeInfo(filter);
+  nodesDestroyNode(opNode);
+  blockDataDestroy(src);
 }
 
 
@@ -814,7 +895,7 @@ TEST(opTest, binary_column_is_true) {
   }  
   
   int32_t rowNum = sizeof(leftv)/sizeof(leftv[0]);
-  flttMakeColRefNode(&pLeft, &src, TSDB_DATA_TYPE_BINARY, 3, rowNum, leftv);  
+  flttMakeColumnNode(&pLeft, &src, TSDB_DATA_TYPE_BINARY, 3, rowNum, leftv);  
 
   flttMakeOpNode(&opNode, OP_TYPE_IS_TRUE, TSDB_DATA_TYPE_BOOL, pLeft, NULL);
   
@@ -837,10 +918,16 @@ TEST(opTest, binary_column_is_true) {
   for (int32_t i = 0; i < rowNum; ++i) {
     ASSERT_EQ(*((int8_t *)rowRes + i), eRes[i]);
   }
+  tfree(rowRes);
+  filterFreeInfo(filter);
+  nodesDestroyNode(opNode);
+  blockDataDestroy(src);
 }
 
 
 TEST(filterModelogicTest, diff_columns_and_or_and) {
+  flttInitLogFile();
+
   SNode *pLeft1 = NULL, *pRight1 = NULL, *pLeft2 = NULL, *pRight2 = NULL, *opNode1 = NULL, *opNode2 = NULL;
   SNode *logicNode1 = NULL, *logicNode2 = NULL;
   double leftv1[8]= {1, 2, 3, 4, 5,-1,-2,-3}, leftv2[8]= {3.0, 4, 2, 9, -3, 3.9, 4.1, 5.2};
@@ -851,12 +938,12 @@ TEST(filterModelogicTest, diff_columns_and_or_and) {
   SNodeList* list = nodesMakeList();
 
   int32_t rowNum = sizeof(leftv1)/sizeof(leftv1[0]);
-  flttMakeColRefNode(&pLeft1, &src, TSDB_DATA_TYPE_DOUBLE, sizeof(double), rowNum, leftv1);
+  flttMakeColumnNode(&pLeft1, &src, TSDB_DATA_TYPE_DOUBLE, sizeof(double), rowNum, leftv1);
   flttMakeValueNode(&pRight1, TSDB_DATA_TYPE_INT, &rightv1);
   flttMakeOpNode(&opNode1, OP_TYPE_GREATER_THAN, TSDB_DATA_TYPE_BOOL, pLeft1, pRight1);
   nodesListAppend(list, opNode1);
 
-  flttMakeColRefNode(&pLeft2, &src, TSDB_DATA_TYPE_DOUBLE, sizeof(double), rowNum, leftv2);
+  flttMakeColumnNode(&pLeft2, &src, TSDB_DATA_TYPE_DOUBLE, sizeof(double), rowNum, leftv2);
   flttMakeValueNode(&pRight2, TSDB_DATA_TYPE_INT, &rightv2);
   flttMakeOpNode(&opNode2, OP_TYPE_LOWER_EQUAL, TSDB_DATA_TYPE_BOOL, pLeft2, pRight2);
   nodesListAppend(list, opNode2);
@@ -866,12 +953,12 @@ TEST(filterModelogicTest, diff_columns_and_or_and) {
 
   list = nodesMakeList();
   
-  flttMakeColRefNode(&pLeft1, &src, TSDB_DATA_TYPE_DOUBLE, sizeof(double), rowNum, leftv1);
+  flttMakeColumnNode(&pLeft1, &src, TSDB_DATA_TYPE_DOUBLE, sizeof(double), rowNum, leftv1);
   flttMakeValueNode(&pRight1, TSDB_DATA_TYPE_INT, &rightv1);
   flttMakeOpNode(&opNode1, OP_TYPE_LOWER_EQUAL, TSDB_DATA_TYPE_BOOL, pLeft1, pRight1);
   nodesListAppend(list, opNode1);
 
-  flttMakeColRefNode(&pLeft2, &src, TSDB_DATA_TYPE_DOUBLE, sizeof(double), rowNum, leftv2);
+  flttMakeColumnNode(&pLeft2, &src, TSDB_DATA_TYPE_DOUBLE, sizeof(double), rowNum, leftv2);
   flttMakeValueNode(&pRight2, TSDB_DATA_TYPE_INT, &rightv2);
   flttMakeOpNode(&opNode2, OP_TYPE_GREATER_EQUAL, TSDB_DATA_TYPE_BOOL, pLeft2, pRight2);
   nodesListAppend(list, opNode2);
@@ -903,6 +990,10 @@ TEST(filterModelogicTest, diff_columns_and_or_and) {
   for (int32_t i = 0; i < rowNum; ++i) {
     ASSERT_EQ(*((int8_t *)rowRes + i), eRes[i]);
   }
+  tfree(rowRes);
+  filterFreeInfo(filter);
+  nodesDestroyNode(logicNode1);
+  blockDataDestroy(src);
 }
 
 TEST(filterModelogicTest, same_column_and_or_and) {
@@ -916,11 +1007,12 @@ TEST(filterModelogicTest, same_column_and_or_and) {
   SNodeList* list = nodesMakeList();
 
   int32_t rowNum = sizeof(leftv1)/sizeof(leftv1[0]);
-  flttMakeColRefNode(&pLeft1, &src, TSDB_DATA_TYPE_DOUBLE, sizeof(double), rowNum, leftv1);
+  flttMakeColumnNode(&pLeft1, &src, TSDB_DATA_TYPE_DOUBLE, sizeof(double), rowNum, leftv1);
   flttMakeValueNode(&pRight1, TSDB_DATA_TYPE_INT, &rightv1);
   flttMakeOpNode(&opNode1, OP_TYPE_GREATER_THAN, TSDB_DATA_TYPE_BOOL, pLeft1, pRight1);
   nodesListAppend(list, opNode1);
 
+  flttMakeColumnNode(&pLeft1, &src, TSDB_DATA_TYPE_DOUBLE, sizeof(double), rowNum, leftv1);
   flttMakeValueNode(&pRight2, TSDB_DATA_TYPE_INT, &rightv2);
   flttMakeOpNode(&opNode2, OP_TYPE_LOWER_EQUAL, TSDB_DATA_TYPE_BOOL, pLeft1, pRight2);
   nodesListAppend(list, opNode2);
@@ -929,11 +1021,13 @@ TEST(filterModelogicTest, same_column_and_or_and) {
 
 
   list = nodesMakeList();
-  
+
+  flttMakeColumnNode(&pLeft1, &src, TSDB_DATA_TYPE_DOUBLE, sizeof(double), rowNum, leftv1);  
   flttMakeValueNode(&pRight1, TSDB_DATA_TYPE_INT, &rightv3);
   flttMakeOpNode(&opNode1, OP_TYPE_LOWER_EQUAL, TSDB_DATA_TYPE_BOOL, pLeft1, pRight1);
   nodesListAppend(list, opNode1);
 
+  flttMakeColumnNode(&pLeft1, &src, TSDB_DATA_TYPE_DOUBLE, sizeof(double), rowNum, leftv1);
   flttMakeValueNode(&pRight2, TSDB_DATA_TYPE_INT, &rightv4);
   flttMakeOpNode(&opNode2, OP_TYPE_GREATER_EQUAL, TSDB_DATA_TYPE_BOOL, pLeft1, pRight2);
   nodesListAppend(list, opNode2);
@@ -965,6 +1059,10 @@ TEST(filterModelogicTest, same_column_and_or_and) {
   for (int32_t i = 0; i < rowNum; ++i) {
     ASSERT_EQ(*((int8_t *)rowRes + i), eRes[i]);
   }
+  tfree(rowRes);
+  filterFreeInfo(filter);
+  nodesDestroyNode(logicNode1);
+  blockDataDestroy(src);
 }
 
 
@@ -979,12 +1077,12 @@ TEST(filterModelogicTest, diff_columns_or_and_or) {
   SNodeList* list = nodesMakeList();
 
   int32_t rowNum = sizeof(leftv1)/sizeof(leftv1[0]);
-  flttMakeColRefNode(&pLeft1, &src, TSDB_DATA_TYPE_DOUBLE, sizeof(double), rowNum, leftv1);
+  flttMakeColumnNode(&pLeft1, &src, TSDB_DATA_TYPE_DOUBLE, sizeof(double), rowNum, leftv1);
   flttMakeValueNode(&pRight1, TSDB_DATA_TYPE_INT, &rightv1);
   flttMakeOpNode(&opNode1, OP_TYPE_GREATER_THAN, TSDB_DATA_TYPE_BOOL, pLeft1, pRight1);
   nodesListAppend(list, opNode1);
 
-  flttMakeColRefNode(&pLeft2, &src, TSDB_DATA_TYPE_DOUBLE, sizeof(double), rowNum, leftv2);
+  flttMakeColumnNode(&pLeft2, &src, TSDB_DATA_TYPE_DOUBLE, sizeof(double), rowNum, leftv2);
   flttMakeValueNode(&pRight2, TSDB_DATA_TYPE_INT, &rightv2);
   flttMakeOpNode(&opNode2, OP_TYPE_LOWER_EQUAL, TSDB_DATA_TYPE_BOOL, pLeft2, pRight2);
   nodesListAppend(list, opNode2);
@@ -994,12 +1092,12 @@ TEST(filterModelogicTest, diff_columns_or_and_or) {
 
   list = nodesMakeList();
   
-  flttMakeColRefNode(&pLeft1, &src, TSDB_DATA_TYPE_DOUBLE, sizeof(double), rowNum, leftv1);
+  flttMakeColumnNode(&pLeft1, &src, TSDB_DATA_TYPE_DOUBLE, sizeof(double), rowNum, leftv1);
   flttMakeValueNode(&pRight1, TSDB_DATA_TYPE_INT, &rightv1);
   flttMakeOpNode(&opNode1, OP_TYPE_LOWER_EQUAL, TSDB_DATA_TYPE_BOOL, pLeft1, pRight1);
   nodesListAppend(list, opNode1);
 
-  flttMakeColRefNode(&pLeft2, &src, TSDB_DATA_TYPE_DOUBLE, sizeof(double), rowNum, leftv2);
+  flttMakeColumnNode(&pLeft2, &src, TSDB_DATA_TYPE_DOUBLE, sizeof(double), rowNum, leftv2);
   flttMakeValueNode(&pRight2, TSDB_DATA_TYPE_INT, &rightv2);
   flttMakeOpNode(&opNode2, OP_TYPE_GREATER_EQUAL, TSDB_DATA_TYPE_BOOL, pLeft2, pRight2);
   nodesListAppend(list, opNode2);
@@ -1031,6 +1129,10 @@ TEST(filterModelogicTest, diff_columns_or_and_or) {
   for (int32_t i = 0; i < rowNum; ++i) {
     ASSERT_EQ(*((int8_t *)rowRes + i), eRes[i]);
   }
+  tfree(rowRes);
+  filterFreeInfo(filter);
+  nodesDestroyNode(logicNode1);
+  blockDataDestroy(src);
 }
 
 TEST(filterModelogicTest, same_column_or_and_or) {
@@ -1044,11 +1146,12 @@ TEST(filterModelogicTest, same_column_or_and_or) {
   SNodeList* list = nodesMakeList();
 
   int32_t rowNum = sizeof(leftv1)/sizeof(leftv1[0]);
-  flttMakeColRefNode(&pLeft1, &src, TSDB_DATA_TYPE_DOUBLE, sizeof(double), rowNum, leftv1);
+  flttMakeColumnNode(&pLeft1, &src, TSDB_DATA_TYPE_DOUBLE, sizeof(double), rowNum, leftv1);
   flttMakeValueNode(&pRight1, TSDB_DATA_TYPE_INT, &rightv1);
   flttMakeOpNode(&opNode1, OP_TYPE_GREATER_THAN, TSDB_DATA_TYPE_BOOL, pLeft1, pRight1);
   nodesListAppend(list, opNode1);
 
+  flttMakeColumnNode(&pLeft1, &src, TSDB_DATA_TYPE_DOUBLE, sizeof(double), rowNum, leftv1);
   flttMakeValueNode(&pRight2, TSDB_DATA_TYPE_INT, &rightv2);
   flttMakeOpNode(&opNode2, OP_TYPE_LOWER_EQUAL, TSDB_DATA_TYPE_BOOL, pLeft1, pRight2);
   nodesListAppend(list, opNode2);
@@ -1058,10 +1161,12 @@ TEST(filterModelogicTest, same_column_or_and_or) {
 
   list = nodesMakeList();
   
+  flttMakeColumnNode(&pLeft1, &src, TSDB_DATA_TYPE_DOUBLE, sizeof(double), rowNum, leftv1);
   flttMakeValueNode(&pRight1, TSDB_DATA_TYPE_INT, &rightv3);
   flttMakeOpNode(&opNode1, OP_TYPE_LOWER_EQUAL, TSDB_DATA_TYPE_BOOL, pLeft1, pRight1);
   nodesListAppend(list, opNode1);
 
+  flttMakeColumnNode(&pLeft1, &src, TSDB_DATA_TYPE_DOUBLE, sizeof(double), rowNum, leftv1);
   flttMakeValueNode(&pRight2, TSDB_DATA_TYPE_INT, &rightv4);
   flttMakeOpNode(&opNode2, OP_TYPE_GREATER_EQUAL, TSDB_DATA_TYPE_BOOL, pLeft1, pRight2);
   nodesListAppend(list, opNode2);
@@ -1093,6 +1198,10 @@ TEST(filterModelogicTest, same_column_or_and_or) {
   for (int32_t i = 0; i < rowNum; ++i) {
     ASSERT_EQ(*((int8_t *)rowRes + i), eRes[i]);
   }
+  tfree(rowRes);
+  filterFreeInfo(filter);
+  nodesDestroyNode(logicNode1);
+  blockDataDestroy(src);
 }
 
 
@@ -1110,13 +1219,13 @@ TEST(scalarModelogicTest, diff_columns_or_and_or) {
   SNodeList* list = nodesMakeList();
 
   int32_t rowNum = sizeof(leftv1)/sizeof(leftv1[0]);
-  flttMakeColRefNode(&pLeft1, &src, TSDB_DATA_TYPE_DOUBLE, sizeof(double), rowNum, leftv1);
-  flttMakeColRefNode(&pRight1, &src, TSDB_DATA_TYPE_INT, sizeof(int32_t), rowNum, rightv1);
+  flttMakeColumnNode(&pLeft1, &src, TSDB_DATA_TYPE_DOUBLE, sizeof(double), rowNum, leftv1);
+  flttMakeColumnNode(&pRight1, &src, TSDB_DATA_TYPE_INT, sizeof(int32_t), rowNum, rightv1);
   flttMakeOpNode(&opNode1, OP_TYPE_EQUAL, TSDB_DATA_TYPE_BOOL, pLeft1, pRight1);
   nodesListAppend(list, opNode1);
 
-  flttMakeColRefNode(&pLeft2, &src, TSDB_DATA_TYPE_DOUBLE, sizeof(double), rowNum, leftv2);
-  flttMakeColRefNode(&pRight2, &src, TSDB_DATA_TYPE_INT, sizeof(int32_t), rowNum, rightv2);
+  flttMakeColumnNode(&pLeft2, &src, TSDB_DATA_TYPE_DOUBLE, sizeof(double), rowNum, leftv2);
+  flttMakeColumnNode(&pRight2, &src, TSDB_DATA_TYPE_INT, sizeof(int32_t), rowNum, rightv2);
   flttMakeOpNode(&opNode2, OP_TYPE_LOWER_THAN, TSDB_DATA_TYPE_BOOL, pLeft2, pRight2);
   nodesListAppend(list, opNode2);
   
@@ -1125,13 +1234,13 @@ TEST(scalarModelogicTest, diff_columns_or_and_or) {
 
   list = nodesMakeList();
   
-  flttMakeColRefNode(&pLeft1, &src, TSDB_DATA_TYPE_DOUBLE, sizeof(double), rowNum, leftv1);
-  flttMakeColRefNode(&pRight1, &src, TSDB_DATA_TYPE_INT, sizeof(int32_t), rowNum, rightv1);
+  flttMakeColumnNode(&pLeft1, &src, TSDB_DATA_TYPE_DOUBLE, sizeof(double), rowNum, leftv1);
+  flttMakeColumnNode(&pRight1, &src, TSDB_DATA_TYPE_INT, sizeof(int32_t), rowNum, rightv1);
   flttMakeOpNode(&opNode1, OP_TYPE_GREATER_THAN, TSDB_DATA_TYPE_BOOL, pLeft1, pRight1);
   nodesListAppend(list, opNode1);
 
-  flttMakeColRefNode(&pLeft2, &src, TSDB_DATA_TYPE_DOUBLE, sizeof(double), rowNum, leftv2);
-  flttMakeColRefNode(&pRight2, &src, TSDB_DATA_TYPE_INT, sizeof(int32_t), rowNum, rightv2);
+  flttMakeColumnNode(&pLeft2, &src, TSDB_DATA_TYPE_DOUBLE, sizeof(double), rowNum, leftv2);
+  flttMakeColumnNode(&pRight2, &src, TSDB_DATA_TYPE_INT, sizeof(int32_t), rowNum, rightv2);
   flttMakeOpNode(&opNode2, OP_TYPE_LOWER_EQUAL, TSDB_DATA_TYPE_BOOL, pLeft2, pRight2);
   nodesListAppend(list, opNode2);
   
@@ -1162,6 +1271,10 @@ TEST(scalarModelogicTest, diff_columns_or_and_or) {
   for (int32_t i = 0; i < rowNum; ++i) {
     ASSERT_EQ(*((int8_t *)rowRes + i), eRes[i]);
   }
+  tfree(rowRes);
+  filterFreeInfo(filter);
+  nodesDestroyNode(logicNode1);
+  blockDataDestroy(src);
 }
 
 
diff --git a/source/libs/scalar/test/scalar/scalarTests.cpp b/source/libs/scalar/test/scalar/scalarTests.cpp
index 086594ddf542c0d1442992872a9c9f76dac16c38..b9aef99088bef2fefb98a7447cd77c6945c1ba76 100644
--- a/source/libs/scalar/test/scalar/scalarTests.cpp
+++ b/source/libs/scalar/test/scalar/scalarTests.cpp
@@ -44,18 +44,53 @@ namespace {
 int64_t scltLeftV = 21, scltRightV = 10;
 double scltLeftVd = 21.0, scltRightVd = 10.0;
 
+void scltFreeDataBlock(void *block) {
+  blockDataDestroy(*(SSDataBlock **)block);
+}
+
 void scltInitLogFile() {
   const char   *defaultLogFileNamePrefix = "taoslog";
   const int32_t maxLogFileNum = 10;
 
   tsAsyncLog = 0;
   qDebugFlag = 159;
+  strcpy(tsLogDir, "/var/log/taos");
 
   if (taosInitLog(defaultLogFileNamePrefix, maxLogFileNum) < 0) {
     printf("failed to open log file in directory:%s\n", tsLogDir);
   }
 }
 
+void scltAppendReservedSlot(SArray *pBlockList, int16_t *dataBlockId, int16_t *slotId, bool newBlock, int32_t rows, SColumnInfo *colInfo) {
+  if (newBlock) {
+    SSDataBlock *res = (SSDataBlock *)calloc(1, sizeof(SSDataBlock));
+    res->info.numOfCols = 1;
+    res->info.rows = rows;
+    res->pDataBlock = taosArrayInit(1, sizeof(SColumnInfoData));
+    SColumnInfoData idata = {0};
+    idata.info  = *colInfo;
+
+    taosArrayPush(res->pDataBlock, &idata);
+    taosArrayPush(pBlockList, &res);
+    
+    blockDataEnsureCapacity(res, rows);
+
+    *dataBlockId = taosArrayGetSize(pBlockList) - 1;
+    *slotId = 0;
+  } else {
+    SSDataBlock *res = *(SSDataBlock **)taosArrayGetLast(pBlockList);
+    res->info.numOfCols++;
+    SColumnInfoData idata = {0};
+    idata.info  = *colInfo;
+
+    blockDataEnsureColumnCapacity(&idata, rows);
+
+    taosArrayPush(res->pDataBlock, &idata);
+    
+    *dataBlockId = taosArrayGetSize(pBlockList) - 1;
+    *slotId = taosArrayGetSize(res->pDataBlock) - 1;
+  }
+}
 
 void scltMakeValueNode(SNode **pNode, int32_t dataType, void *value) {
   SNode *node = nodesMakeNode(QUERY_NODE_VALUE);
@@ -65,7 +100,7 @@ void scltMakeValueNode(SNode **pNode, int32_t dataType, void *value) {
   if (IS_VAR_DATA_TYPE(dataType)) {
     vnode->datum.p = (char *)malloc(varDataTLen(value));
     varDataCopy(vnode->datum.p, value);
-    vnode->node.resType.bytes = varDataLen(value);
+    vnode->node.resType.bytes = varDataTLen(value);
   } else {
     vnode->node.resType.bytes = tDataTypes[dataType].bytes;
     assignVal((char *)nodesGetValueFromNode(vnode), (const char *)value, 0, dataType);
@@ -74,7 +109,7 @@ void scltMakeValueNode(SNode **pNode, int32_t dataType, void *value) {
   *pNode = (SNode *)vnode;
 }
 
-void scltMakeColRefNode(SNode **pNode, SSDataBlock **block, int32_t dataType, int32_t dataBytes, int32_t rowNum, void *value) {
+void scltMakeColumnNode(SNode **pNode, SSDataBlock **block, int32_t dataType, int32_t dataBytes, int32_t rowNum, void *value) {
   SNode *node = nodesMakeNode(QUERY_NODE_COLUMN);
   SColumnNode *rnode = (SColumnNode *)node;
   rnode->node.resType.type = dataType;
@@ -90,7 +125,7 @@ void scltMakeColRefNode(SNode **pNode, SSDataBlock **block, int32_t dataType, in
       SColumnInfoData idata = {{0}};
       idata.info.type  = TSDB_DATA_TYPE_NULL;
       idata.info.bytes = 10;
-      idata.info.colId = 0;
+      idata.info.colId = i + 1;
 
       int32_t size = idata.info.bytes * rowNum;
       idata.pData = (char *)calloc(1, size);
@@ -100,18 +135,25 @@ void scltMakeColRefNode(SNode **pNode, SSDataBlock **block, int32_t dataType, in
     SColumnInfoData idata = {{0}};
     idata.info.type  = dataType;
     idata.info.bytes = dataBytes;
-    idata.info.colId = 55;
-    idata.pData = (char *)value;
-    if (IS_VAR_DATA_TYPE(dataType)) {
-      idata.varmeta.offset = (int32_t *)calloc(rowNum, sizeof(int32_t));
-      for (int32_t i = 0; i < rowNum; ++i) {
-        idata.varmeta.offset[i] = (dataBytes + VARSTR_HEADER_SIZE) * i;
+    idata.info.colId = 3;
+    int32_t size = idata.info.bytes * rowNum;
+    idata.pData = (char *)calloc(1, size);
+    taosArrayPush(res->pDataBlock, &idata);
+    
+    blockDataEnsureCapacity(res, rowNum);
+
+    SColumnInfoData *pColumn = (SColumnInfoData *)taosArrayGetLast(res->pDataBlock);
+    for (int32_t i = 0; i < rowNum; ++i) {
+      colDataAppend(pColumn, i, (const char *)value, false);
+      if (IS_VAR_DATA_TYPE(dataType)) {
+        value = (char *)value + varDataTLen(value);
+      } else {
+        value = (char *)value + dataBytes;
       }
     }
-    taosArrayPush(res->pDataBlock, &idata);
 
     rnode->slotId = 2;
-    rnode->colId = 55;
+    rnode->colId = 3;
 
     *block = res;
   } else {
@@ -121,12 +163,26 @@ void scltMakeColRefNode(SNode **pNode, SSDataBlock **block, int32_t dataType, in
     SColumnInfoData idata = {{0}};
     idata.info.type  = dataType;
     idata.info.bytes = dataBytes;
-    idata.info.colId = 55 + idx;
-    idata.pData = (char *)value;
+    idata.info.colId = 1 + idx;
+    int32_t size = idata.info.bytes * rowNum;
+    idata.pData = (char *)calloc(1, size);
     taosArrayPush(res->pDataBlock, &idata);
+    res->info.numOfCols++;
+    SColumnInfoData *pColumn = (SColumnInfoData *)taosArrayGetLast(res->pDataBlock);
+    
+    blockDataEnsureColumnCapacity(pColumn, rowNum);
+
+    for (int32_t i = 0; i < rowNum; ++i) {
+      colDataAppend(pColumn, i, (const char *)value, false);
+      if (IS_VAR_DATA_TYPE(dataType)) {
+        value = (char *)value + varDataTLen(value);
+      } else {
+        value = (char *)value + dataBytes;
+      }
+    }
     
     rnode->slotId = idx;
-    rnode->colId = 55 + idx;
+    rnode->colId = 1 + idx;
   }
 
   *pNode = (SNode *)rnode;
@@ -171,6 +227,17 @@ void scltMakeLogicNode(SNode **pNode, ELogicConditionType opType, SNode **nodeLi
   *pNode = (SNode *)onode;
 }
 
+void scltMakeTargetNode(SNode **pNode, int16_t dataBlockId, int16_t slotId, SNode *snode) {
+  SNode *node = nodesMakeNode(QUERY_NODE_TARGET);
+  STargetNode *onode = (STargetNode *)node;
+  onode->pExpr = snode;
+  onode->dataBlockId = dataBlockId;
+  onode->slotId = slotId;
+  
+  *pNode = (SNode *)onode;
+}
+
+
 
 }
 
@@ -187,6 +254,7 @@ TEST(constantTest, bigint_add_bigint) {
   SValueNode *v = (SValueNode *)res;
   ASSERT_EQ(v->node.resType.type, TSDB_DATA_TYPE_DOUBLE);
   ASSERT_EQ(v->datum.d, (scltLeftV + scltRightV));
+  nodesDestroyNode(res);
 }
 
 TEST(constantTest, double_sub_bigint) {
@@ -202,6 +270,7 @@ TEST(constantTest, double_sub_bigint) {
   SValueNode *v = (SValueNode *)res;
   ASSERT_EQ(v->node.resType.type, TSDB_DATA_TYPE_DOUBLE);
   ASSERT_EQ(v->datum.d, (scltLeftVd - scltRightV));
+  nodesDestroyNode(res);  
 }
 
 TEST(constantTest, tinyint_and_smallint) {
@@ -217,6 +286,7 @@ TEST(constantTest, tinyint_and_smallint) {
   SValueNode *v = (SValueNode *)res;
   ASSERT_EQ(v->node.resType.type, TSDB_DATA_TYPE_BIGINT);
   ASSERT_EQ(v->datum.i, (int64_t)scltLeftV & (int64_t)scltRightV);
+  nodesDestroyNode(res);  
 }
 
 TEST(constantTest, bigint_or_double) {
@@ -232,6 +302,7 @@ TEST(constantTest, bigint_or_double) {
   SValueNode *v = (SValueNode *)res;
   ASSERT_EQ(v->node.resType.type, TSDB_DATA_TYPE_BIGINT);
   ASSERT_EQ(v->datum.i, (int64_t)scltLeftV | (int64_t)scltRightVd);
+  nodesDestroyNode(res);
 }
 
 TEST(constantTest, int_or_binary) {
@@ -250,6 +321,7 @@ TEST(constantTest, int_or_binary) {
   SValueNode *v = (SValueNode *)res;
   ASSERT_EQ(v->node.resType.type, TSDB_DATA_TYPE_BIGINT);
   ASSERT_EQ(v->datum.b, scltLeftV | scltRightV);
+  nodesDestroyNode(res);
 }
 
 
@@ -266,6 +338,7 @@ TEST(constantTest, int_greater_double) {
   SValueNode *v = (SValueNode *)res;
   ASSERT_EQ(v->node.resType.type, TSDB_DATA_TYPE_BOOL);
   ASSERT_EQ(v->datum.b, scltLeftV > scltRightVd);
+  nodesDestroyNode(res);
 }
 
 TEST(constantTest, int_greater_equal_binary) {
@@ -284,6 +357,7 @@ TEST(constantTest, int_greater_equal_binary) {
   SValueNode *v = (SValueNode *)res;
   ASSERT_EQ(v->node.resType.type, TSDB_DATA_TYPE_BOOL);
   ASSERT_EQ(v->datum.b, scltLeftV > scltRightVd);
+  nodesDestroyNode(res);
 }
 
 TEST(constantTest, tinyint_lower_ubigint) {
@@ -299,11 +373,13 @@ TEST(constantTest, tinyint_lower_ubigint) {
   SValueNode *v = (SValueNode *)res;
   ASSERT_EQ(v->node.resType.type, TSDB_DATA_TYPE_BOOL);
   ASSERT_EQ(v->datum.b, scltLeftV < scltRightV);
+  nodesDestroyNode(res);
 }
 
 TEST(constantTest, usmallint_lower_equal_ubigint) {
   SNode *pLeft = NULL, *pRight = NULL, *opNode = NULL, *res = NULL;
-  int32_t leftv = 1, rightv = 1;
+  int32_t leftv = 1;
+  int64_t rightv = 1;
   scltMakeValueNode(&pLeft, TSDB_DATA_TYPE_USMALLINT, &leftv);
   scltMakeValueNode(&pRight, TSDB_DATA_TYPE_UBIGINT, &rightv);
   scltMakeOpNode(&opNode, OP_TYPE_LOWER_EQUAL, TSDB_DATA_TYPE_BOOL, pLeft, pRight);
@@ -315,11 +391,13 @@ TEST(constantTest, usmallint_lower_equal_ubigint) {
   SValueNode *v = (SValueNode *)res;
   ASSERT_EQ(v->node.resType.type, TSDB_DATA_TYPE_BOOL);
   ASSERT_EQ(v->datum.b, leftv <= rightv);
+  nodesDestroyNode(res);
 }
 
 TEST(constantTest, int_equal_smallint1) {
   SNode *pLeft = NULL, *pRight = NULL, *opNode = NULL, *res = NULL;
-  int32_t leftv = 1, rightv = 1;
+  int32_t leftv = 1;
+  int16_t rightv = 1;
   scltMakeValueNode(&pLeft, TSDB_DATA_TYPE_INT, &leftv);
   scltMakeValueNode(&pRight, TSDB_DATA_TYPE_SMALLINT, &rightv);
   scltMakeOpNode(&opNode, OP_TYPE_EQUAL, TSDB_DATA_TYPE_BOOL, pLeft, pRight);
@@ -331,6 +409,7 @@ TEST(constantTest, int_equal_smallint1) {
   SValueNode *v = (SValueNode *)res;
   ASSERT_EQ(v->node.resType.type, TSDB_DATA_TYPE_BOOL);
   ASSERT_EQ(v->datum.b, leftv == rightv);
+  nodesDestroyNode(res);
 }
 
 TEST(constantTest, int_equal_smallint2) {
@@ -347,6 +426,7 @@ TEST(constantTest, int_equal_smallint2) {
   SValueNode *v = (SValueNode *)res;
   ASSERT_EQ(v->node.resType.type, TSDB_DATA_TYPE_BOOL);
   ASSERT_EQ(v->datum.b, leftv == rightv);
+  nodesDestroyNode(res);
 }
 
 TEST(constantTest, int_not_equal_smallint1) {
@@ -363,6 +443,7 @@ TEST(constantTest, int_not_equal_smallint1) {
   SValueNode *v = (SValueNode *)res;
   ASSERT_EQ(v->node.resType.type, TSDB_DATA_TYPE_BOOL);
   ASSERT_EQ(v->datum.b, leftv != rightv);
+  nodesDestroyNode(res);
 }
 
 TEST(constantTest, int_not_equal_smallint2) {
@@ -379,6 +460,7 @@ TEST(constantTest, int_not_equal_smallint2) {
   SValueNode *v = (SValueNode *)res;
   ASSERT_EQ(v->node.resType.type, TSDB_DATA_TYPE_BOOL);
   ASSERT_EQ(v->datum.b, leftv != rightv);
+  nodesDestroyNode(res);
 }
 
 
@@ -406,6 +488,7 @@ TEST(constantTest, int_in_smallint1) {
   SValueNode *v = (SValueNode *)res;
   ASSERT_EQ(v->node.resType.type, TSDB_DATA_TYPE_BOOL);
   ASSERT_EQ(v->datum.b, true);
+  nodesDestroyNode(res);
 }
 
 TEST(constantTest, int_in_smallint2) {
@@ -431,6 +514,7 @@ TEST(constantTest, int_in_smallint2) {
   SValueNode *v = (SValueNode *)res;
   ASSERT_EQ(v->node.resType.type, TSDB_DATA_TYPE_BOOL);
   ASSERT_EQ(v->datum.b, false);
+  nodesDestroyNode(res);
 }
 
 TEST(constantTest, int_not_in_smallint1) {
@@ -454,6 +538,7 @@ TEST(constantTest, int_not_in_smallint1) {
   SValueNode *v = (SValueNode *)res;
   ASSERT_EQ(v->node.resType.type, TSDB_DATA_TYPE_BOOL);
   ASSERT_EQ(v->datum.b, false);
+  nodesDestroyNode(res);
 }
 
 TEST(constantTest, int_not_in_smallint2) {
@@ -479,6 +564,7 @@ TEST(constantTest, int_not_in_smallint2) {
   SValueNode *v = (SValueNode *)res;
   ASSERT_EQ(v->node.resType.type, TSDB_DATA_TYPE_BOOL);
   ASSERT_EQ(v->datum.b, true);
+  nodesDestroyNode(res);
 }
 
 TEST(constantTest, binary_like_binary1) {
@@ -499,6 +585,7 @@ TEST(constantTest, binary_like_binary1) {
   SValueNode *v = (SValueNode *)res;
   ASSERT_EQ(v->node.resType.type, TSDB_DATA_TYPE_BOOL);
   ASSERT_EQ(v->datum.b, true);
+  nodesDestroyNode(res);
 }
 
 TEST(constantTest, binary_like_binary2) {
@@ -519,6 +606,7 @@ TEST(constantTest, binary_like_binary2) {
   SValueNode *v = (SValueNode *)res;
   ASSERT_EQ(v->node.resType.type, TSDB_DATA_TYPE_BOOL);
   ASSERT_EQ(v->datum.b, false);
+  nodesDestroyNode(res);
 }
 
 TEST(constantTest, binary_not_like_binary1) {
@@ -539,6 +627,7 @@ TEST(constantTest, binary_not_like_binary1) {
   SValueNode *v = (SValueNode *)res;
   ASSERT_EQ(v->node.resType.type, TSDB_DATA_TYPE_BOOL);
   ASSERT_EQ(v->datum.b, false);
+  nodesDestroyNode(res);
 }
 
 TEST(constantTest, binary_not_like_binary2) {
@@ -559,6 +648,7 @@ TEST(constantTest, binary_not_like_binary2) {
   SValueNode *v = (SValueNode *)res;
   ASSERT_EQ(v->node.resType.type, TSDB_DATA_TYPE_BOOL);
   ASSERT_EQ(v->datum.b, true);
+  nodesDestroyNode(res);
 }
 
 TEST(constantTest, binary_match_binary1) {
@@ -579,6 +669,7 @@ TEST(constantTest, binary_match_binary1) {
   SValueNode *v = (SValueNode *)res;
   ASSERT_EQ(v->node.resType.type, TSDB_DATA_TYPE_BOOL);
   ASSERT_EQ(v->datum.b, true);
+  nodesDestroyNode(res);
 }
 
 TEST(constantTest, binary_match_binary2) {
@@ -599,6 +690,7 @@ TEST(constantTest, binary_match_binary2) {
   SValueNode *v = (SValueNode *)res;
   ASSERT_EQ(v->node.resType.type, TSDB_DATA_TYPE_BOOL);
   ASSERT_EQ(v->datum.b, false);
+  nodesDestroyNode(res);
 }
 
 TEST(constantTest, binary_not_match_binary1) {
@@ -619,6 +711,7 @@ TEST(constantTest, binary_not_match_binary1) {
   SValueNode *v = (SValueNode *)res;
   ASSERT_EQ(v->node.resType.type, TSDB_DATA_TYPE_BOOL);
   ASSERT_EQ(v->datum.b, true);
+  nodesDestroyNode(res);
 }
 
 TEST(constantTest, binary_not_match_binary2) {
@@ -639,6 +732,7 @@ TEST(constantTest, binary_not_match_binary2) {
   SValueNode *v = (SValueNode *)res;
   ASSERT_EQ(v->node.resType.type, TSDB_DATA_TYPE_BOOL);
   ASSERT_EQ(v->datum.b, false);
+  nodesDestroyNode(res);
 }
 
 TEST(constantTest, int_is_null1) {
@@ -654,12 +748,13 @@ TEST(constantTest, int_is_null1) {
   SValueNode *v = (SValueNode *)res;
   ASSERT_EQ(v->node.resType.type, TSDB_DATA_TYPE_BOOL);
   ASSERT_EQ(v->datum.b, false);
+  nodesDestroyNode(res);
 }
 
 TEST(constantTest, int_is_null2) {
   SNode *pLeft = NULL, *pRight = NULL, *opNode = NULL, *res = NULL;
   int32_t leftv = TSDB_DATA_INT_NULL, rightv = 1;
-  scltMakeValueNode(&pLeft, TSDB_DATA_TYPE_INT, &leftv);
+  scltMakeValueNode(&pLeft, TSDB_DATA_TYPE_NULL, &leftv);
   scltMakeOpNode(&opNode, OP_TYPE_IS_NULL, TSDB_DATA_TYPE_BOOL, pLeft, pRight);
   
   int32_t code = scalarCalculateConstants(opNode, &res);
@@ -669,6 +764,7 @@ TEST(constantTest, int_is_null2) {
   SValueNode *v = (SValueNode *)res;
   ASSERT_EQ(v->node.resType.type, TSDB_DATA_TYPE_BOOL);
   ASSERT_EQ(v->datum.b, true);
+  nodesDestroyNode(res);
 }
 
 TEST(constantTest, int_is_not_null1) {
@@ -684,12 +780,13 @@ TEST(constantTest, int_is_not_null1) {
   SValueNode *v = (SValueNode *)res;
   ASSERT_EQ(v->node.resType.type, TSDB_DATA_TYPE_BOOL);
   ASSERT_EQ(v->datum.b, true);
+  nodesDestroyNode(res);
 }
 
 TEST(constantTest, int_is_not_null2) {
   SNode *pLeft = NULL, *pRight = NULL, *opNode = NULL, *res = NULL;
-  int32_t leftv = TSDB_DATA_INT_NULL, rightv = 1;
-  scltMakeValueNode(&pLeft, TSDB_DATA_TYPE_INT, &leftv);
+  int32_t leftv = 1, rightv = 1;
+  scltMakeValueNode(&pLeft, TSDB_DATA_TYPE_NULL, &leftv);
   scltMakeOpNode(&opNode, OP_TYPE_IS_NOT_NULL, TSDB_DATA_TYPE_BOOL, pLeft, pRight);
   
   int32_t code = scalarCalculateConstants(opNode, &res);
@@ -699,6 +796,7 @@ TEST(constantTest, int_is_not_null2) {
   SValueNode *v = (SValueNode *)res;
   ASSERT_EQ(v->node.resType.type, TSDB_DATA_TYPE_BOOL);
   ASSERT_EQ(v->datum.b, false);
+  nodesDestroyNode(res);
 }
 
 TEST(constantTest, int_add_int_is_true1) {
@@ -716,6 +814,7 @@ TEST(constantTest, int_add_int_is_true1) {
   SValueNode *v = (SValueNode *)res;
   ASSERT_EQ(v->node.resType.type, TSDB_DATA_TYPE_BOOL);
   ASSERT_EQ(v->datum.b, true);
+  nodesDestroyNode(res);
 }
 
 TEST(constantTest, int_add_int_is_true2) {
@@ -733,6 +832,7 @@ TEST(constantTest, int_add_int_is_true2) {
   SValueNode *v = (SValueNode *)res;
   ASSERT_EQ(v->node.resType.type, TSDB_DATA_TYPE_BOOL);
   ASSERT_EQ(v->datum.b, false);
+  nodesDestroyNode(res);
 }
 
 
@@ -751,6 +851,7 @@ TEST(constantTest, int_greater_int_is_true1) {
   SValueNode *v = (SValueNode *)res;
   ASSERT_EQ(v->node.resType.type, TSDB_DATA_TYPE_BOOL);
   ASSERT_EQ(v->datum.b, false);
+  nodesDestroyNode(res);
 }
 
 TEST(constantTest, int_greater_int_is_true2) {
@@ -768,6 +869,7 @@ TEST(constantTest, int_greater_int_is_true2) {
   SValueNode *v = (SValueNode *)res;
   ASSERT_EQ(v->node.resType.type, TSDB_DATA_TYPE_BOOL);
   ASSERT_EQ(v->datum.b, true);
+  nodesDestroyNode(res);
 }
 
 TEST(constantTest, greater_and_lower) {
@@ -792,30 +894,45 @@ TEST(constantTest, greater_and_lower) {
   SValueNode *v = (SValueNode *)res;
   ASSERT_EQ(v->node.resType.type, TSDB_DATA_TYPE_BOOL);
   ASSERT_EQ(v->datum.b, true);
+  nodesDestroyNode(res);
 }
 
 
 
 TEST(columnTest, smallint_value_add_int_column) {
+  scltInitLogFile();
+  
   SNode *pLeft = NULL, *pRight = NULL, *opNode = NULL;
   int32_t leftv = 1;
   int16_t rightv[5]= {0, -5, -4, 23, 100};
   double eRes[5] = {1.0, -4, -3, 24, 101};
   SSDataBlock *src = NULL;
-  SScalarParam res = {0};
   int32_t rowNum = sizeof(rightv)/sizeof(rightv[0]);
   scltMakeValueNode(&pLeft, TSDB_DATA_TYPE_INT, &leftv);
-  scltMakeColRefNode(&pRight, &src, TSDB_DATA_TYPE_SMALLINT, sizeof(int16_t), rowNum, rightv);
+  scltMakeColumnNode(&pRight, &src, TSDB_DATA_TYPE_SMALLINT, sizeof(int16_t), rowNum, rightv);
   scltMakeOpNode(&opNode, OP_TYPE_ADD, TSDB_DATA_TYPE_DOUBLE, pLeft, pRight);
+
+  SArray *blockList = taosArrayInit(2, POINTER_BYTES);
+  taosArrayPush(blockList, &src);
+  SColumnInfo colInfo = {.colId = 1, .type = TSDB_DATA_TYPE_DOUBLE, .bytes = sizeof(double)};
+  int16_t dataBlockId = 0, slotId = 0;
+  scltAppendReservedSlot(blockList, &dataBlockId, &slotId, true, rowNum, &colInfo);
+  scltMakeTargetNode(&opNode, dataBlockId, slotId, opNode);
   
-  int32_t code = scalarCalculate(opNode, src, &res);
+  int32_t code = scalarCalculate(opNode, blockList, NULL);
   ASSERT_EQ(code, 0);
-  ASSERT_EQ(res.num, rowNum);
-  ASSERT_EQ(res.type, TSDB_DATA_TYPE_DOUBLE);
-  ASSERT_EQ(res.bytes, tDataTypes[TSDB_DATA_TYPE_DOUBLE].bytes);
+
+  SSDataBlock *res = *(SSDataBlock **)taosArrayGetLast(blockList);
+  ASSERT_EQ(res->info.rows, rowNum);
+  SColumnInfoData *column = (SColumnInfoData *)taosArrayGetLast(res->pDataBlock);
+  ASSERT_EQ(column->info.type, TSDB_DATA_TYPE_DOUBLE);
+  ASSERT_EQ(column->info.bytes, tDataTypes[TSDB_DATA_TYPE_DOUBLE].bytes);
   for (int32_t i = 0; i < rowNum; ++i) {
-    ASSERT_EQ(*((double *)res.data + i), eRes[i]);
+    ASSERT_EQ(*((double *)colDataGetData(column, i)), eRes[i]);
   }
+
+  taosArrayDestroyEx(blockList, scltFreeDataBlock);
+  nodesDestroyNode(opNode);
 }
 
 TEST(columnTest, bigint_column_multi_binary_column) {
@@ -829,20 +946,32 @@ TEST(columnTest, bigint_column_multi_binary_column) {
   }
   double eRes[5] = {0, 2, 6, 12, 20};
   SSDataBlock *src = NULL;
-  SScalarParam res = {0};
   int32_t rowNum = sizeof(rightv)/sizeof(rightv[0]);
-  scltMakeColRefNode(&pLeft, &src, TSDB_DATA_TYPE_BIGINT, sizeof(int64_t), rowNum, leftv);
-  scltMakeColRefNode(&pRight, &src, TSDB_DATA_TYPE_BINARY, 5, rowNum, rightv);
+  scltMakeColumnNode(&pLeft, &src, TSDB_DATA_TYPE_BIGINT, sizeof(int64_t), rowNum, leftv);
+  scltMakeColumnNode(&pRight, &src, TSDB_DATA_TYPE_BINARY, 5, rowNum, rightv);
   scltMakeOpNode(&opNode, OP_TYPE_MULTI, TSDB_DATA_TYPE_DOUBLE, pLeft, pRight);
+
+
+  SArray *blockList = taosArrayInit(1, POINTER_BYTES);
+  taosArrayPush(blockList, &src);
+  SColumnInfo colInfo = {.colId = 1, .type = TSDB_DATA_TYPE_DOUBLE, .bytes = sizeof(double)};
+  int16_t dataBlockId = 0, slotId = 0;
+  scltAppendReservedSlot(blockList, &dataBlockId, &slotId, false, rowNum, &colInfo);
+  scltMakeTargetNode(&opNode, dataBlockId, slotId, opNode);
   
-  int32_t code = scalarCalculate(opNode, src, &res);
+  int32_t code = scalarCalculate(opNode, blockList, NULL);
   ASSERT_EQ(code, 0);
-  ASSERT_EQ(res.num, rowNum);
-  ASSERT_EQ(res.type, TSDB_DATA_TYPE_DOUBLE);
-  ASSERT_EQ(res.bytes, tDataTypes[TSDB_DATA_TYPE_DOUBLE].bytes);
+
+  SSDataBlock *res = *(SSDataBlock **)taosArrayGetLast(blockList);
+  ASSERT_EQ(res->info.rows, rowNum);
+  SColumnInfoData *column = (SColumnInfoData *)taosArrayGetLast(res->pDataBlock);
+  ASSERT_EQ(column->info.type, TSDB_DATA_TYPE_DOUBLE);
+  ASSERT_EQ(column->info.bytes, tDataTypes[TSDB_DATA_TYPE_DOUBLE].bytes);
   for (int32_t i = 0; i < rowNum; ++i) {
-    ASSERT_EQ(*((double *)res.data + i), eRes[i]);
+    ASSERT_EQ(*((double *)colDataGetData(column, i)), eRes[i]);
   }
+  taosArrayDestroyEx(blockList, scltFreeDataBlock);
+  nodesDestroyNode(opNode);
 }
 
 TEST(columnTest, smallint_column_and_binary_column) {
@@ -856,20 +985,31 @@ TEST(columnTest, smallint_column_and_binary_column) {
   }
   int64_t eRes[5] = {0, 0, 2, 0, 4};
   SSDataBlock *src = NULL;
-  SScalarParam res = {0};
   int32_t rowNum = sizeof(rightv)/sizeof(rightv[0]);
-  scltMakeColRefNode(&pLeft, &src, TSDB_DATA_TYPE_SMALLINT, sizeof(int16_t), rowNum, leftv);
-  scltMakeColRefNode(&pRight, &src, TSDB_DATA_TYPE_BINARY, 5, rowNum, rightv);
+  scltMakeColumnNode(&pLeft, &src, TSDB_DATA_TYPE_SMALLINT, sizeof(int16_t), rowNum, leftv);
+  scltMakeColumnNode(&pRight, &src, TSDB_DATA_TYPE_BINARY, 5, rowNum, rightv);
   scltMakeOpNode(&opNode, OP_TYPE_BIT_AND, TSDB_DATA_TYPE_BIGINT, pLeft, pRight);
   
-  int32_t code = scalarCalculate(opNode, src, &res);
+  SArray *blockList = taosArrayInit(1, POINTER_BYTES);
+  taosArrayPush(blockList, &src);
+  SColumnInfo colInfo = {.colId = 1, .type = TSDB_DATA_TYPE_BIGINT, .bytes = sizeof(int64_t)};
+  int16_t dataBlockId = 0, slotId = 0;
+  scltAppendReservedSlot(blockList, &dataBlockId, &slotId, false, rowNum, &colInfo);
+  scltMakeTargetNode(&opNode, dataBlockId, slotId, opNode);
+  
+  int32_t code = scalarCalculate(opNode, blockList, NULL);
   ASSERT_EQ(code, 0);
-  ASSERT_EQ(res.num, rowNum);
-  ASSERT_EQ(res.type, TSDB_DATA_TYPE_BIGINT);
-  ASSERT_EQ(res.bytes, tDataTypes[TSDB_DATA_TYPE_BIGINT].bytes);
+
+  SSDataBlock *res = *(SSDataBlock **)taosArrayGetLast(blockList);
+  ASSERT_EQ(res->info.rows, rowNum);
+  SColumnInfoData *column = (SColumnInfoData *)taosArrayGetLast(res->pDataBlock);
+  ASSERT_EQ(column->info.type, TSDB_DATA_TYPE_BIGINT);
+  ASSERT_EQ(column->info.bytes, tDataTypes[TSDB_DATA_TYPE_BIGINT].bytes);
   for (int32_t i = 0; i < rowNum; ++i) {
-    ASSERT_EQ(*((int64_t *)res.data + i), eRes[i]);
+    ASSERT_EQ(*((int64_t *)colDataGetData(column, i)), eRes[i]);
   }
+  taosArrayDestroyEx(blockList, scltFreeDataBlock);
+  nodesDestroyNode(opNode);
 }
 
 TEST(columnTest, smallint_column_or_float_column) {
@@ -878,20 +1018,31 @@ TEST(columnTest, smallint_column_or_float_column) {
   float rightv[5]= {2.0, 3.0, 4.1, 5.2, 6.0};
   int64_t eRes[5] = {3, 3, 7, 5, 7};
   SSDataBlock *src = NULL;
-  SScalarParam res = {0};
   int32_t rowNum = sizeof(rightv)/sizeof(rightv[0]);
-  scltMakeColRefNode(&pLeft, &src, TSDB_DATA_TYPE_SMALLINT, sizeof(int16_t), rowNum, leftv);
-  scltMakeColRefNode(&pRight, &src, TSDB_DATA_TYPE_FLOAT, sizeof(float), rowNum, rightv);
+  scltMakeColumnNode(&pLeft, &src, TSDB_DATA_TYPE_SMALLINT, sizeof(int16_t), rowNum, leftv);
+  scltMakeColumnNode(&pRight, &src, TSDB_DATA_TYPE_FLOAT, sizeof(float), rowNum, rightv);
   scltMakeOpNode(&opNode, OP_TYPE_BIT_OR, TSDB_DATA_TYPE_BIGINT, pLeft, pRight);
   
-  int32_t code = scalarCalculate(opNode, src, &res);
+  SArray *blockList = taosArrayInit(1, POINTER_BYTES);
+  taosArrayPush(blockList, &src);
+  SColumnInfo colInfo = {.colId = 1, .type = TSDB_DATA_TYPE_BIGINT, .bytes = sizeof(int64_t)};
+  int16_t dataBlockId = 0, slotId = 0;
+  scltAppendReservedSlot(blockList, &dataBlockId, &slotId, true, rowNum, &colInfo);
+  scltMakeTargetNode(&opNode, dataBlockId, slotId, opNode);
+  
+  int32_t code = scalarCalculate(opNode, blockList, NULL);
   ASSERT_EQ(code, 0);
-  ASSERT_EQ(res.num, rowNum);
-  ASSERT_EQ(res.type, TSDB_DATA_TYPE_BIGINT);
-  ASSERT_EQ(res.bytes, tDataTypes[TSDB_DATA_TYPE_BIGINT].bytes);
+
+  SSDataBlock *res = *(SSDataBlock **)taosArrayGetLast(blockList);
+  ASSERT_EQ(res->info.rows, rowNum);
+  SColumnInfoData *column = (SColumnInfoData *)taosArrayGetLast(res->pDataBlock);
+  ASSERT_EQ(column->info.type, TSDB_DATA_TYPE_BIGINT);
+  ASSERT_EQ(column->info.bytes, tDataTypes[TSDB_DATA_TYPE_BIGINT].bytes);
   for (int32_t i = 0; i < rowNum; ++i) {
-    ASSERT_EQ(*((int64_t *)res.data + i), eRes[i]);
+    ASSERT_EQ(*((int64_t *)colDataGetData(column, i)), eRes[i]);
   }
+  taosArrayDestroyEx(blockList, scltFreeDataBlock);
+  nodesDestroyNode(opNode);
 }
 
 TEST(columnTest, smallint_column_or_double_value) {
@@ -900,20 +1051,31 @@ TEST(columnTest, smallint_column_or_double_value) {
   double rightv= 10.2;
   int64_t eRes[5] = {11, 10, 11, 14, 15};
   SSDataBlock *src = NULL;
-  SScalarParam res = {0};
   int32_t rowNum = sizeof(leftv)/sizeof(leftv[0]);
-  scltMakeColRefNode(&pLeft, &src, TSDB_DATA_TYPE_SMALLINT, sizeof(int16_t), rowNum, leftv);
+  scltMakeColumnNode(&pLeft, &src, TSDB_DATA_TYPE_SMALLINT, sizeof(int16_t), rowNum, leftv);
   scltMakeValueNode(&pRight, TSDB_DATA_TYPE_DOUBLE, &rightv);
   scltMakeOpNode(&opNode, OP_TYPE_BIT_OR, TSDB_DATA_TYPE_BIGINT, pLeft, pRight);
   
-  int32_t code = scalarCalculate(opNode, src, &res);
+  SArray *blockList = taosArrayInit(1, POINTER_BYTES);
+  taosArrayPush(blockList, &src);
+  SColumnInfo colInfo = {.colId = 1, .type = TSDB_DATA_TYPE_BIGINT, .bytes = sizeof(int64_t)};
+  int16_t dataBlockId = 0, slotId = 0;
+  scltAppendReservedSlot(blockList, &dataBlockId, &slotId, true, rowNum, &colInfo);
+  scltMakeTargetNode(&opNode, dataBlockId, slotId, opNode);
+  
+  int32_t code = scalarCalculate(opNode, blockList, NULL);
   ASSERT_EQ(code, 0);
-  ASSERT_EQ(res.num, rowNum);
-  ASSERT_EQ(res.type, TSDB_DATA_TYPE_BIGINT);
-  ASSERT_EQ(res.bytes, tDataTypes[TSDB_DATA_TYPE_BIGINT].bytes);
+
+  SSDataBlock *res = *(SSDataBlock **)taosArrayGetLast(blockList);
+  ASSERT_EQ(res->info.rows, rowNum);
+  SColumnInfoData *column = (SColumnInfoData *)taosArrayGetLast(res->pDataBlock);
+  ASSERT_EQ(column->info.type, TSDB_DATA_TYPE_BIGINT);
+  ASSERT_EQ(column->info.bytes, tDataTypes[TSDB_DATA_TYPE_BIGINT].bytes);
   for (int32_t i = 0; i < rowNum; ++i) {
-    ASSERT_EQ(*((int64_t *)res.data + i), eRes[i]);
+    ASSERT_EQ(*((int64_t *)colDataGetData(column, i)), eRes[i]);
   }
+  taosArrayDestroyEx(blockList, scltFreeDataBlock);
+  nodesDestroyNode(opNode);
 }
 
 TEST(columnTest, smallint_column_greater_double_value) {
@@ -922,20 +1084,31 @@ TEST(columnTest, smallint_column_greater_double_value) {
   double rightv= 2.5;
   bool eRes[5] = {false, false, true, true, true};
   SSDataBlock *src = NULL;
-  SScalarParam res = {0};
   int32_t rowNum = sizeof(leftv)/sizeof(leftv[0]);
-  scltMakeColRefNode(&pLeft, &src, TSDB_DATA_TYPE_SMALLINT, sizeof(int16_t), rowNum, leftv);
+  scltMakeColumnNode(&pLeft, &src, TSDB_DATA_TYPE_SMALLINT, sizeof(int16_t), rowNum, leftv);
   scltMakeValueNode(&pRight, TSDB_DATA_TYPE_DOUBLE, &rightv);
   scltMakeOpNode(&opNode, OP_TYPE_GREATER_THAN, TSDB_DATA_TYPE_BOOL, pLeft, pRight);
   
-  int32_t code = scalarCalculate(opNode, src, &res);
+  SArray *blockList = taosArrayInit(1, POINTER_BYTES);
+  taosArrayPush(blockList, &src);
+  SColumnInfo colInfo = {.colId = 1, .type = TSDB_DATA_TYPE_BOOL, .bytes = sizeof(bool)};
+  int16_t dataBlockId = 0, slotId = 0;
+  scltAppendReservedSlot(blockList, &dataBlockId, &slotId, true, rowNum, &colInfo);
+  scltMakeTargetNode(&opNode, dataBlockId, slotId, opNode);
+  
+  int32_t code = scalarCalculate(opNode, blockList, NULL);
   ASSERT_EQ(code, 0);
-  ASSERT_EQ(res.num, rowNum);
-  ASSERT_EQ(res.type, TSDB_DATA_TYPE_BOOL);
-  ASSERT_EQ(res.bytes, tDataTypes[TSDB_DATA_TYPE_BOOL].bytes);
+
+  SSDataBlock *res = *(SSDataBlock **)taosArrayGetLast(blockList);
+  ASSERT_EQ(res->info.rows, rowNum);
+  SColumnInfoData *column = (SColumnInfoData *)taosArrayGetLast(res->pDataBlock);
+  ASSERT_EQ(column->info.type, TSDB_DATA_TYPE_BOOL);
+  ASSERT_EQ(column->info.bytes, tDataTypes[TSDB_DATA_TYPE_BOOL].bytes);
   for (int32_t i = 0; i < rowNum; ++i) {
-    ASSERT_EQ(*((bool *)res.data + i), eRes[i]);
+    ASSERT_EQ(*((bool *)colDataGetData(column, i)), eRes[i]);
   }
+  taosArrayDestroyEx(blockList, scltFreeDataBlock);
+  nodesDestroyNode(opNode);
 }
 
 TEST(columnTest, int_column_in_double_list) {
@@ -944,9 +1117,8 @@ TEST(columnTest, int_column_in_double_list) {
   double rightv1 = 1.1,rightv2 = 2.2,rightv3 = 3.3;
   bool eRes[5] = {true, true, true, false, false};  
   SSDataBlock *src = NULL;  
-  SScalarParam res = {0};
   int32_t rowNum = sizeof(leftv)/sizeof(leftv[0]);
-  scltMakeColRefNode(&pLeft, &src, TSDB_DATA_TYPE_INT, sizeof(int32_t), rowNum, leftv);  
+  scltMakeColumnNode(&pLeft, &src, TSDB_DATA_TYPE_INT, sizeof(int32_t), rowNum, leftv);  
   SNodeList* list = nodesMakeList();
   scltMakeValueNode(&pRight, TSDB_DATA_TYPE_DOUBLE, &rightv1);
   nodesListAppend(list, pRight);
@@ -956,22 +1128,33 @@ TEST(columnTest, int_column_in_double_list) {
   nodesListAppend(list, pRight);
   scltMakeListNode(&listNode,list, TSDB_DATA_TYPE_INT);
   scltMakeOpNode(&opNode, OP_TYPE_IN, TSDB_DATA_TYPE_BOOL, pLeft, listNode);
+
+  SArray *blockList = taosArrayInit(1, POINTER_BYTES);
+  taosArrayPush(blockList, &src);
+  SColumnInfo colInfo = {.colId = 1, .type = TSDB_DATA_TYPE_BOOL, .bytes = sizeof(bool)};
+  int16_t dataBlockId = 0, slotId = 0;
+  scltAppendReservedSlot(blockList, &dataBlockId, &slotId, true, rowNum, &colInfo);
+  scltMakeTargetNode(&opNode, dataBlockId, slotId, opNode);
   
-  int32_t code = scalarCalculate(opNode, src, &res);
+  int32_t code = scalarCalculate(opNode, blockList, NULL);
   ASSERT_EQ(code, 0);
-  ASSERT_EQ(res.num, rowNum);
-  ASSERT_EQ(res.type, TSDB_DATA_TYPE_BOOL);
-  ASSERT_EQ(res.bytes, tDataTypes[TSDB_DATA_TYPE_BOOL].bytes);
+
+  SSDataBlock *res = *(SSDataBlock **)taosArrayGetLast(blockList);
+  ASSERT_EQ(res->info.rows, rowNum);
+  SColumnInfoData *column = (SColumnInfoData *)taosArrayGetLast(res->pDataBlock);
+  ASSERT_EQ(column->info.type, TSDB_DATA_TYPE_BOOL);
+  ASSERT_EQ(column->info.bytes, tDataTypes[TSDB_DATA_TYPE_BOOL].bytes);
   for (int32_t i = 0; i < rowNum; ++i) {
-    ASSERT_EQ(*((bool *)res.data + i), eRes[i]);
+    ASSERT_EQ(*((bool *)colDataGetData(column, i)), eRes[i]);
   }
+  taosArrayDestroyEx(blockList, scltFreeDataBlock);
+  nodesDestroyNode(opNode);
 }
 
 TEST(columnTest, binary_column_in_binary_list) {
   SNode *pLeft = NULL, *pRight = NULL, *listNode = NULL, *opNode = NULL;
   bool eRes[5] = {true, true, false, false, false};  
   SSDataBlock *src = NULL;  
-  SScalarParam res = {0};
   char leftv[5][5]= {0};
   char rightv[3][5]= {0};
   for (int32_t i = 0; i < 5; ++i) {
@@ -994,7 +1177,7 @@ TEST(columnTest, binary_column_in_binary_list) {
   }
   
   int32_t rowNum = sizeof(leftv)/sizeof(leftv[0]);
-  scltMakeColRefNode(&pLeft, &src, TSDB_DATA_TYPE_BINARY, 3, rowNum, leftv);  
+  scltMakeColumnNode(&pLeft, &src, TSDB_DATA_TYPE_BINARY, 3, rowNum, leftv);  
   SNodeList* list = nodesMakeList();
   scltMakeValueNode(&pRight, TSDB_DATA_TYPE_BINARY, rightv[0]);
   nodesListAppend(list, pRight);
@@ -1005,14 +1188,26 @@ TEST(columnTest, binary_column_in_binary_list) {
   scltMakeListNode(&listNode,list, TSDB_DATA_TYPE_BINARY);
   scltMakeOpNode(&opNode, OP_TYPE_IN, TSDB_DATA_TYPE_BOOL, pLeft, listNode);
   
-  int32_t code = scalarCalculate(opNode, src, &res);
+  SArray *blockList = taosArrayInit(1, POINTER_BYTES);
+  taosArrayPush(blockList, &src);
+  SColumnInfo colInfo = {.colId = 1, .type = TSDB_DATA_TYPE_BOOL, .bytes = sizeof(bool)};
+  int16_t dataBlockId = 0, slotId = 0;
+  scltAppendReservedSlot(blockList, &dataBlockId, &slotId, false, rowNum, &colInfo);
+  scltMakeTargetNode(&opNode, dataBlockId, slotId, opNode);
+  
+  int32_t code = scalarCalculate(opNode, blockList, NULL);
   ASSERT_EQ(code, 0);
-  ASSERT_EQ(res.num, rowNum);
-  ASSERT_EQ(res.type, TSDB_DATA_TYPE_BOOL);
-  ASSERT_EQ(res.bytes, tDataTypes[TSDB_DATA_TYPE_BOOL].bytes);
+
+  SSDataBlock *res = *(SSDataBlock **)taosArrayGetLast(blockList);
+  ASSERT_EQ(res->info.rows, rowNum);
+  SColumnInfoData *column = (SColumnInfoData *)taosArrayGetLast(res->pDataBlock);
+  ASSERT_EQ(column->info.type, TSDB_DATA_TYPE_BOOL);
+  ASSERT_EQ(column->info.bytes, tDataTypes[TSDB_DATA_TYPE_BOOL].bytes);
   for (int32_t i = 0; i < rowNum; ++i) {
-    ASSERT_EQ(*((bool *)res.data + i), eRes[i]);
+    ASSERT_EQ(*((bool *)colDataGetData(column, i)), eRes[i]);
   }
+  taosArrayDestroyEx(blockList, scltFreeDataBlock);
+  nodesDestroyNode(opNode);
 }
 
 TEST(columnTest, binary_column_like_binary) {
@@ -1020,7 +1215,6 @@ TEST(columnTest, binary_column_like_binary) {
   char rightv[64] = {0};
   char leftv[5][5]= {0};
   SSDataBlock *src = NULL;  
-  SScalarParam res = {0};
   bool eRes[5] = {true, false, true, false, true};  
   
   for (int32_t i = 0; i < 5; ++i) {
@@ -1031,28 +1225,41 @@ TEST(columnTest, binary_column_like_binary) {
   }  
   
   int32_t rowNum = sizeof(leftv)/sizeof(leftv[0]);
-  scltMakeColRefNode(&pLeft, &src, TSDB_DATA_TYPE_BINARY, 3, rowNum, leftv);  
+  scltMakeColumnNode(&pLeft, &src, TSDB_DATA_TYPE_BINARY, 3, rowNum, leftv);  
 
   sprintf(&rightv[2], "%s", "__0");
   varDataSetLen(rightv, strlen(&rightv[2]));
   scltMakeValueNode(&pRight, TSDB_DATA_TYPE_BINARY, rightv);
   scltMakeOpNode(&opNode, OP_TYPE_LIKE, TSDB_DATA_TYPE_BOOL, pLeft, pRight);
   
-  int32_t code = scalarCalculate(opNode, src, &res);
+  SArray *blockList = taosArrayInit(1, POINTER_BYTES);
+  taosArrayPush(blockList, &src);
+  SColumnInfo colInfo = {.colId = 1, .type = TSDB_DATA_TYPE_BOOL, .bytes = sizeof(bool)};
+  int16_t dataBlockId = 0, slotId = 0;
+  scltAppendReservedSlot(blockList, &dataBlockId, &slotId, false, rowNum, &colInfo);
+  scltMakeTargetNode(&opNode, dataBlockId, slotId, opNode);
+  
+  int32_t code = scalarCalculate(opNode, blockList, NULL);
   ASSERT_EQ(code, 0);
-  ASSERT_EQ(res.num, rowNum);
-  ASSERT_EQ(res.type, TSDB_DATA_TYPE_BOOL);
-  ASSERT_EQ(res.bytes, tDataTypes[TSDB_DATA_TYPE_BOOL].bytes);
+
+  SSDataBlock *res = *(SSDataBlock **)taosArrayGetLast(blockList);
+  ASSERT_EQ(res->info.rows, rowNum);
+  SColumnInfoData *column = (SColumnInfoData *)taosArrayGetLast(res->pDataBlock);
+  ASSERT_EQ(column->info.type, TSDB_DATA_TYPE_BOOL);
+  ASSERT_EQ(column->info.bytes, tDataTypes[TSDB_DATA_TYPE_BOOL].bytes);
   for (int32_t i = 0; i < rowNum; ++i) {
-    ASSERT_EQ(*((bool *)res.data + i), eRes[i]);
+    ASSERT_EQ(*((bool *)colDataGetData(column, i)), eRes[i]);
   }
+
+  taosArrayDestroyEx(blockList, scltFreeDataBlock);
+  nodesDestroyNode(opNode);
 }
 
+
 TEST(columnTest, binary_column_is_true) {
   SNode *pLeft = NULL, *opNode = NULL;
   char leftv[5][5]= {0};
   SSDataBlock *src = NULL;  
-  SScalarParam res = {0};
   bool eRes[5] = {false, true, false, true, false};  
   
   for (int32_t i = 0; i < 5; ++i) {
@@ -1063,80 +1270,117 @@ TEST(columnTest, binary_column_is_true) {
   }  
   
   int32_t rowNum = sizeof(leftv)/sizeof(leftv[0]);
-  scltMakeColRefNode(&pLeft, &src, TSDB_DATA_TYPE_BINARY, 3, rowNum, leftv);  
+  scltMakeColumnNode(&pLeft, &src, TSDB_DATA_TYPE_BINARY, 3, rowNum, leftv);  
 
   scltMakeOpNode(&opNode, OP_TYPE_IS_TRUE, TSDB_DATA_TYPE_BOOL, pLeft, NULL);
   
-  int32_t code = scalarCalculate(opNode, src, &res);
+  SArray *blockList = taosArrayInit(1, POINTER_BYTES);
+  taosArrayPush(blockList, &src);
+  SColumnInfo colInfo = {.colId = 1, .type = TSDB_DATA_TYPE_BOOL, .bytes = sizeof(bool)};
+  int16_t dataBlockId = 0, slotId = 0;
+  scltAppendReservedSlot(blockList, &dataBlockId, &slotId, false, rowNum, &colInfo);
+  scltMakeTargetNode(&opNode, dataBlockId, slotId, opNode);
+  
+  int32_t code = scalarCalculate(opNode, blockList, NULL);
   ASSERT_EQ(code, 0);
-  ASSERT_EQ(res.num, rowNum);
-  ASSERT_EQ(res.type, TSDB_DATA_TYPE_BOOL);
-  ASSERT_EQ(res.bytes, tDataTypes[TSDB_DATA_TYPE_BOOL].bytes);
+
+  SSDataBlock *res = *(SSDataBlock **)taosArrayGetLast(blockList);
+  ASSERT_EQ(res->info.rows, rowNum);
+  SColumnInfoData *column = (SColumnInfoData *)taosArrayGetLast(res->pDataBlock);
+  ASSERT_EQ(column->info.type, TSDB_DATA_TYPE_BOOL);
+  ASSERT_EQ(column->info.bytes, tDataTypes[TSDB_DATA_TYPE_BOOL].bytes);
   for (int32_t i = 0; i < rowNum; ++i) {
-    ASSERT_EQ(*((bool *)res.data + i), eRes[i]);
+    ASSERT_EQ(*((bool *)colDataGetData(column, i)), eRes[i]);
   }
+  taosArrayDestroyEx(blockList, scltFreeDataBlock);
+  nodesDestroyNode(opNode);
 }
 
 TEST(columnTest, binary_column_is_null) {
   SNode *pLeft = NULL, *opNode = NULL;
   char leftv[5][5]= {0};
   SSDataBlock *src = NULL;  
-  SScalarParam res = {0};
-  bool eRes[5] = {false, false, false, false, true};  
+  bool eRes[5] = {false, false, true, false, true};  
   
-  for (int32_t i = 0; i < 4; ++i) {
+  for (int32_t i = 0; i < 5; ++i) {
     leftv[i][2] = '0' + i % 2;
     leftv[i][3] = 'a';
     leftv[i][4] = '0' + i % 2;
     varDataSetLen(leftv[i], 3);
   }  
-
-  setVardataNull(leftv[4], TSDB_DATA_TYPE_BINARY);
   
   int32_t rowNum = sizeof(leftv)/sizeof(leftv[0]);
-  scltMakeColRefNode(&pLeft, &src, TSDB_DATA_TYPE_BINARY, 3, rowNum, leftv);  
+  scltMakeColumnNode(&pLeft, &src, TSDB_DATA_TYPE_BINARY, 3, rowNum, leftv); 
+
+  SColumnInfoData *pcolumn = (SColumnInfoData *)taosArrayGetLast(src->pDataBlock);
+  colDataAppend(pcolumn, 2, NULL, true);
+  colDataAppend(pcolumn, 4, NULL, true);
 
   scltMakeOpNode(&opNode, OP_TYPE_IS_NULL, TSDB_DATA_TYPE_BOOL, pLeft, NULL);
   
-  int32_t code = scalarCalculate(opNode, src, &res);
+  SArray *blockList = taosArrayInit(1, POINTER_BYTES);
+  taosArrayPush(blockList, &src);
+  SColumnInfo colInfo = {.colId = 1, .type = TSDB_DATA_TYPE_BOOL, .bytes = sizeof(bool)};
+  int16_t dataBlockId = 0, slotId = 0;
+  scltAppendReservedSlot(blockList, &dataBlockId, &slotId, false, rowNum, &colInfo);
+  scltMakeTargetNode(&opNode, dataBlockId, slotId, opNode);
+  
+  int32_t code = scalarCalculate(opNode, blockList, NULL);
   ASSERT_EQ(code, 0);
-  ASSERT_EQ(res.num, rowNum);
-  ASSERT_EQ(res.type, TSDB_DATA_TYPE_BOOL);
-  ASSERT_EQ(res.bytes, tDataTypes[TSDB_DATA_TYPE_BOOL].bytes);
+
+  SSDataBlock *res = *(SSDataBlock **)taosArrayGetLast(blockList);
+  ASSERT_EQ(res->info.rows, rowNum);
+  SColumnInfoData *column = (SColumnInfoData *)taosArrayGetLast(res->pDataBlock);
+  ASSERT_EQ(column->info.type, TSDB_DATA_TYPE_BOOL);
+  ASSERT_EQ(column->info.bytes, tDataTypes[TSDB_DATA_TYPE_BOOL].bytes);
   for (int32_t i = 0; i < rowNum; ++i) {
-    ASSERT_EQ(*((bool *)res.data + i), eRes[i]);
+    ASSERT_EQ(*((bool *)colDataGetData(column, i)), eRes[i]);
   }
+  taosArrayDestroyEx(blockList, scltFreeDataBlock);
+  nodesDestroyNode(opNode);
 }
 
 TEST(columnTest, binary_column_is_not_null) {
   SNode *pLeft = NULL, *opNode = NULL;
   char leftv[5][5]= {0};
   SSDataBlock *src = NULL;  
-  SScalarParam res = {0};
   bool eRes[5] = {true, true, true, true, false};  
   
-  for (int32_t i = 0; i < 4; ++i) {
+  for (int32_t i = 0; i < 5; ++i) {
     leftv[i][2] = '0' + i % 2;
     leftv[i][3] = 'a';
     leftv[i][4] = '0' + i % 2;
     varDataSetLen(leftv[i], 3);
   }  
-
-  setVardataNull(leftv[4], TSDB_DATA_TYPE_BINARY);
   
   int32_t rowNum = sizeof(leftv)/sizeof(leftv[0]);
-  scltMakeColRefNode(&pLeft, &src, TSDB_DATA_TYPE_BINARY, 3, rowNum, leftv);  
+  scltMakeColumnNode(&pLeft, &src, TSDB_DATA_TYPE_BINARY, 3, rowNum, leftv);  
+  
+  SColumnInfoData *pcolumn = (SColumnInfoData *)taosArrayGetLast(src->pDataBlock);
+  colDataAppend(pcolumn, 4, NULL, true);
 
   scltMakeOpNode(&opNode, OP_TYPE_IS_NOT_NULL, TSDB_DATA_TYPE_BOOL, pLeft, NULL);
   
-  int32_t code = scalarCalculate(opNode, src, &res);
+  SArray *blockList = taosArrayInit(1, POINTER_BYTES);
+  taosArrayPush(blockList, &src);
+  SColumnInfo colInfo = {.colId = 1, .type = TSDB_DATA_TYPE_BOOL, .bytes = sizeof(bool)};
+  int16_t dataBlockId = 0, slotId = 0;
+  scltAppendReservedSlot(blockList, &dataBlockId, &slotId, false, rowNum, &colInfo);
+  scltMakeTargetNode(&opNode, dataBlockId, slotId, opNode);
+  
+  int32_t code = scalarCalculate(opNode, blockList, NULL);
   ASSERT_EQ(code, 0);
-  ASSERT_EQ(res.num, rowNum);
-  ASSERT_EQ(res.type, TSDB_DATA_TYPE_BOOL);
-  ASSERT_EQ(res.bytes, tDataTypes[TSDB_DATA_TYPE_BOOL].bytes);
+
+  SSDataBlock *res = *(SSDataBlock **)taosArrayGetLast(blockList);
+  ASSERT_EQ(res->info.rows, rowNum);
+  SColumnInfoData *column = (SColumnInfoData *)taosArrayGetLast(res->pDataBlock);
+  ASSERT_EQ(column->info.type, TSDB_DATA_TYPE_BOOL);
+  ASSERT_EQ(column->info.bytes, tDataTypes[TSDB_DATA_TYPE_BOOL].bytes);
   for (int32_t i = 0; i < rowNum; ++i) {
-    ASSERT_EQ(*((bool *)res.data + i), eRes[i]);
+    ASSERT_EQ(*((bool *)colDataGetData(column, i)), eRes[i]);
   }
+  taosArrayDestroyEx(blockList, scltFreeDataBlock);
+  nodesDestroyNode(opNode);
 }
 
 TEST(columnTest, greater_and_lower) {
@@ -1148,30 +1392,40 @@ TEST(columnTest, greater_and_lower) {
   int32_t v4[5]= {5, 3, 4, 2, 6};
   bool eRes[5] = {false, true, false, false, false};
   SSDataBlock *src = NULL;
-  SScalarParam res = {0};
   int32_t rowNum = sizeof(v1)/sizeof(v1[0]);
-  scltMakeColRefNode(&pcol1, &src, TSDB_DATA_TYPE_SMALLINT, sizeof(int16_t), rowNum, v1);
-  scltMakeColRefNode(&pcol2, &src, TSDB_DATA_TYPE_INT, sizeof(int16_t), rowNum, v2);
+  scltMakeColumnNode(&pcol1, &src, TSDB_DATA_TYPE_SMALLINT, sizeof(int16_t), rowNum, v1);
+  scltMakeColumnNode(&pcol2, &src, TSDB_DATA_TYPE_INT, sizeof(int32_t), rowNum, v2);
   scltMakeOpNode(&opNode1, OP_TYPE_GREATER_THAN, TSDB_DATA_TYPE_BOOL, pcol1, pcol2);
-  scltMakeColRefNode(&pcol1, &src, TSDB_DATA_TYPE_BIGINT, sizeof(int16_t), rowNum, v3);
-  scltMakeColRefNode(&pcol2, &src, TSDB_DATA_TYPE_INT, sizeof(int16_t), rowNum, v4);
+  scltMakeColumnNode(&pcol1, &src, TSDB_DATA_TYPE_BIGINT, sizeof(int64_t), rowNum, v3);
+  scltMakeColumnNode(&pcol2, &src, TSDB_DATA_TYPE_INT, sizeof(int32_t), rowNum, v4);
   scltMakeOpNode(&opNode2, OP_TYPE_LOWER_THAN, TSDB_DATA_TYPE_BOOL, pcol1, pcol2);
   list[0] = opNode1;
   list[1] = opNode2;
   scltMakeLogicNode(&logicNode, LOGIC_COND_TYPE_AND, list, 2);
   
-  int32_t code = scalarCalculate(logicNode, src, &res);
+  SArray *blockList = taosArrayInit(1, POINTER_BYTES);
+  taosArrayPush(blockList, &src);
+  SColumnInfo colInfo = {.colId = 1, .type = TSDB_DATA_TYPE_BOOL, .bytes = sizeof(bool)};
+  int16_t dataBlockId = 0, slotId = 0;
+  scltAppendReservedSlot(blockList, &dataBlockId, &slotId, false, rowNum, &colInfo);
+  scltMakeTargetNode(&logicNode, dataBlockId, slotId, logicNode);
+  
+  int32_t code = scalarCalculate(logicNode, blockList, NULL);
   ASSERT_EQ(code, 0);
-  ASSERT_EQ(res.num, rowNum);
-  ASSERT_EQ(res.type, TSDB_DATA_TYPE_BOOL);
-  ASSERT_EQ(res.bytes, tDataTypes[TSDB_DATA_TYPE_BOOL].bytes);
+
+  SSDataBlock *res = *(SSDataBlock **)taosArrayGetLast(blockList);
+  ASSERT_EQ(res->info.rows, rowNum);
+  SColumnInfoData *column = (SColumnInfoData *)taosArrayGetLast(res->pDataBlock);
+  ASSERT_EQ(column->info.type, TSDB_DATA_TYPE_BOOL);
+  ASSERT_EQ(column->info.bytes, tDataTypes[TSDB_DATA_TYPE_BOOL].bytes);
   for (int32_t i = 0; i < rowNum; ++i) {
-    ASSERT_EQ(*((bool *)res.data + i), eRes[i]);
+    ASSERT_EQ(*((bool *)colDataGetData(column, i)), eRes[i]);
   }
+  taosArrayDestroyEx(blockList, scltFreeDataBlock);
+  nodesDestroyNode(logicNode);
 }
 
 
-
 int main(int argc, char** argv) {
   srand(time(NULL));
   testing::InitGoogleTest(&argc, argv);
diff --git a/source/libs/scheduler/src/scheduler.c b/source/libs/scheduler/src/scheduler.c
index 45e125608a15c92488f146d15839490ccd55dcad..f14b95873ac8b1d4929aa993c8b1e39ba8345f65 100644
--- a/source/libs/scheduler/src/scheduler.c
+++ b/source/libs/scheduler/src/scheduler.c
@@ -578,7 +578,7 @@ int32_t schProcessOnJobFailureImpl(SSchJob *pJob, int32_t status, int32_t errCod
     atomic_store_32(&pJob->errCode, errCode);
   }
 
-  if (atomic_load_8(&pJob->userFetch) || ((!SCH_JOB_NEED_FETCH(&pJob->attr)) && pJob->attr.syncSchedule)) {
+  if (atomic_load_8(&pJob->userFetch) || pJob->attr.syncSchedule) {
     tsem_post(&pJob->rspSem);
   }
 
@@ -638,7 +638,7 @@ int32_t schProcessOnJobPartialSuccess(SSchJob *pJob) {
   
   SCH_ERR_RET(schCheckAndUpdateJobStatus(pJob, JOB_TASK_STATUS_PARTIAL_SUCCEED));
 
-  if ((!SCH_JOB_NEED_FETCH(&pJob->attr)) && pJob->attr.syncSchedule) {
+  if (pJob->attr.syncSchedule) {
     tsem_post(&pJob->rspSem);
   }
   
diff --git a/source/os/src/osFile.c b/source/os/src/osFile.c
index 2d8314058ec4122cacfb3eab1109c06ddd3d7657..fbb0e752571afe03467954e56a8984331912173d 100644
--- a/source/os/src/osFile.c
+++ b/source/os/src/osFile.c
@@ -190,39 +190,50 @@ TdFilePtr taosOpenFile(const char *path, int32_t tdFileOptions) {
 #if defined(_TD_WINDOWS_64) || defined(_TD_WINDOWS_32)
   return NULL;
 #else
-  int access = O_BINARY;
-  char *mode = NULL;
-  access |= (tdFileOptions & TD_FILE_CTEATE) ? O_CREAT : 0;
-  if ((tdFileOptions & TD_FILE_WRITE) && (tdFileOptions & TD_FILE_READ)) {
-    access |= O_RDWR;
-    mode = (tdFileOptions & TD_FILE_TEXT) ? "rt+" : "rb+";
-  } else if (tdFileOptions & TD_FILE_WRITE) {
-    access |= O_WRONLY;
-    mode = (tdFileOptions & TD_FILE_TEXT) ? "wt" : "wb";
-  } else if (tdFileOptions & TD_FILE_READ) {
-    access |= O_RDONLY;
-    mode = (tdFileOptions & TD_FILE_TEXT) ? "rt" : "rb";
-  }
-  access |= (tdFileOptions & TD_FILE_TRUNC) ? O_TRUNC : 0;
-  access |= (tdFileOptions & TD_FILE_APPEND) ? O_APPEND : 0;
-  access |= (tdFileOptions & TD_FILE_TEXT) ? O_TEXT : 0;
-  access |= (tdFileOptions & TD_FILE_EXCL) ? O_EXCL : 0;
+  int fd = -1;
+  FILE *fp = NULL;
+  if (tdFileOptions & TD_FILE_STREAM) {
+    char *mode = NULL;
+    if (tdFileOptions & TD_FILE_APPEND) {
+      mode = (tdFileOptions & TD_FILE_TEXT) ? "at+" : "ab+";
+    }else if (tdFileOptions & TD_FILE_TRUNC) {
+      mode = (tdFileOptions & TD_FILE_TEXT) ? "wt+" : "wb+";
+    }else {
+      mode = (tdFileOptions & TD_FILE_TEXT) ? "rt+" : "rb+";
+    }
+    assert(!(tdFileOptions & TD_FILE_EXCL));
+    fp = fopen(path, mode);
+    if (fp == NULL) {
+      return NULL;
+    }
+  } else {
+    int access = O_BINARY;
+    access |= (tdFileOptions & TD_FILE_CTEATE) ? O_CREAT : 0;
+    if ((tdFileOptions & TD_FILE_WRITE) && (tdFileOptions & TD_FILE_READ)) {
+      access |= O_RDWR;
+    } else if (tdFileOptions & TD_FILE_WRITE) {
+      access |= O_WRONLY;
+    } else if (tdFileOptions & TD_FILE_READ) {
+      access |= O_RDONLY;
+    }
+    access |= (tdFileOptions & TD_FILE_TRUNC) ? O_TRUNC : 0;
+    access |= (tdFileOptions & TD_FILE_APPEND) ? O_APPEND : 0;
+    access |= (tdFileOptions & TD_FILE_TEXT) ? O_TEXT : 0;
+    access |= (tdFileOptions & TD_FILE_EXCL) ? O_EXCL : 0;
+    fd = open(path, access, S_IRWXU | S_IRWXG | S_IRWXO);
+    if (fd == -1) {
+      return NULL;
+    }
+  }
+
   if (tdFileOptions & TD_FILE_AUTO_DEL) {
     autoDelFileListAdd(path);
   }
-  int fd = open(path, access, S_IRWXU | S_IRWXG | S_IRWXO);
-  if (fd == -1) {
-    return NULL;
-  }
-  FILE *fp = fdopen(fd, mode);
-  if (fp == NULL) {
-    close(fd);
-    return NULL;
-  }
+
   TdFilePtr pFile = (TdFilePtr)malloc(sizeof(TdFile));
   if (pFile == NULL) {
-    close(fd);
-    fclose(fp);
+    if (fd >= 0) close(fd);
+    if (fp != NULL) fclose(fp);
     return NULL;
   }
   pFile->fd = fd;
@@ -239,11 +250,16 @@ int64_t taosCloseFile(TdFilePtr *ppFile) {
   if (ppFile == NULL || *ppFile == NULL || (*ppFile)->fd == -1) {
     return 0;
   }
-  fflush((*ppFile)->fp);
-  fsync((*ppFile)->fd);
-  close((*ppFile)->fd);
-  (*ppFile)->fd = -1;
-  (*ppFile)->fp = NULL;
+  if ((*ppFile)->fp != NULL) {
+    fflush((*ppFile)->fp);
+    fclose((*ppFile)->fp);
+    (*ppFile)->fp = NULL;
+  }
+  if ((*ppFile)->fd >= 0) {
+    fsync((*ppFile)->fd);
+    close((*ppFile)->fd);
+    (*ppFile)->fd = -1;
+  }
   (*ppFile)->refId = 0;
   free(*ppFile);
   *ppFile = NULL;
@@ -255,6 +271,7 @@ int64_t taosReadFile(TdFilePtr pFile, void *buf, int64_t count) {
   if (pFile == NULL) {
     return 0;
   }
+  assert(pFile->fd >= 0);
   int64_t leftbytes = count;
   int64_t readbytes;
   char   *tbuf = (char *)buf;
@@ -282,10 +299,16 @@ int64_t taosPReadFile(TdFilePtr pFile, void *buf, int64_t count, int64_t offset)
   if (pFile == NULL) {
     return 0;
   }
+  assert(pFile->fd >= 0);
   return pread(pFile->fd, buf, count, offset);
 }
 
 int64_t taosWriteFile(TdFilePtr pFile, const void *buf, int64_t count) {
+  if (pFile == NULL) {
+    return 0;
+  }
+  assert(pFile->fd >= 0);
+
   int64_t nleft = count;
   int64_t nwritten = 0;
   char   *tbuf = (char *)buf;
@@ -296,21 +319,20 @@ int64_t taosWriteFile(TdFilePtr pFile, const void *buf, int64_t count) {
       if (errno == EINTR) {
         continue;
       }
-      fflush(pFile->fp);
-      fsync(pFile->fd);
       return -1;
     }
     nleft -= nwritten;
     tbuf += nwritten;
   }
-
-  fflush(pFile->fp);
   fsync(pFile->fd);
   return count;
 }
 
 int64_t taosLSeekFile(TdFilePtr pFile, int64_t offset, int32_t whence) {
-  if (pFile == NULL) return -1;
+  if (pFile == NULL) {
+    return 0;
+  }
+  assert(pFile->fd >= 0);
   return (int64_t)lseek(pFile->fd, (long)offset, whence);
 }
 
@@ -318,6 +340,11 @@ int32_t taosFStatFile(TdFilePtr pFile, int64_t *size, int32_t *mtime) {
 #if defined(_TD_WINDOWS_64) || defined(_TD_WINDOWS_32)
   return 0;
 #else
+  if (pFile == NULL) {
+    return 0;
+  }
+  assert(pFile->fd >= 0);
+
   struct stat fileStat;
   int32_t code = fstat(pFile->fd, &fileStat);
   if (code < 0) {
@@ -340,6 +367,11 @@ int32_t taosLockFile(TdFilePtr pFile) {
 #if defined(_TD_WINDOWS_64) || defined(_TD_WINDOWS_32)
   return 0;
 #else
+  if (pFile == NULL) {
+    return 0;
+  }
+  assert(pFile->fd >= 0);
+
   return (int32_t)flock(pFile->fd, LOCK_EX | LOCK_NB);
 #endif
 }
@@ -348,6 +380,11 @@ int32_t taosUnLockFile(TdFilePtr pFile) {
 #if defined(_TD_WINDOWS_64) || defined(_TD_WINDOWS_32)
   return 0;
 #else
+  if (pFile == NULL) {
+    return 0;
+  }
+  assert(pFile->fd >= 0);
+
   return (int32_t)flock(pFile->fd, LOCK_UN | LOCK_NB);
 #endif
 }
@@ -403,6 +440,11 @@ int32_t taosFtruncateFile(TdFilePtr pFile, int64_t l_size) {
 
   return 0;
 #else
+  if (pFile == NULL) {
+    return 0;
+  }
+  assert(pFile->fd >= 0);
+
   return ftruncate(pFile->fd, l_size);
 #endif
 }
@@ -419,7 +461,14 @@ int32_t taosFsyncFile(TdFilePtr pFile) {
 
   return FlushFileBuffers(h);
 #else
-  return fflush(pFile->fp);
+  if (pFile == NULL) {
+    return 0;
+  }
+
+  if (pFile->fp != NULL) return fflush(pFile->fp);
+  if (pFile->fp >= 0) return fsync(pFile->fd);
+
+  return 0;
 #endif
 }
 
@@ -543,6 +592,11 @@ int64_t taosSendFile(SocketFd dfd, FileFd sfd, int64_t *offset, int64_t count) {
 #else
 
 int64_t taosSendFile(SocketFd fdDst, TdFilePtr pFileSrc, int64_t *offset, int64_t size) {
+  if (pFileSrc == NULL) {
+    return 0;
+  }
+  assert(pFileSrc->fd >= 0);
+
   int64_t leftbytes = size;
   int64_t sentbytes;
 
@@ -565,12 +619,22 @@ int64_t taosSendFile(SocketFd fdDst, TdFilePtr pFileSrc, int64_t *offset, int64_
 }
 
 int64_t taosFSendFile(TdFilePtr pFileOut, TdFilePtr pFileIn, int64_t *offset, int64_t size) {
+  if (pFileOut == NULL || pFileIn == NULL) {
+    return 0;
+  }
+  assert(pFileOut->fd >= 0);
+
   return taosSendFile(pFileOut->fd, pFileIn, offset, size);
 }
 
 #endif
 
 void taosFprintfFile(TdFilePtr pFile, const char *format, ...) {
+  if (pFile == NULL) {
+    return;
+  }
+  assert(pFile->fp != NULL);
+
   char           buffer[MAX_FPRINTFLINE_BUFFER_SIZE] = {0};
   va_list ap;
   va_start(ap, format);
@@ -580,7 +644,10 @@ void taosFprintfFile(TdFilePtr pFile, const char *format, ...) {
 }
 
 void *taosMmapReadOnlyFile(TdFilePtr pFile, int64_t length) {
-  if (pFile == NULL) return NULL;
+  if (pFile == NULL) {
+    return NULL;
+  }
+  assert(pFile->fd >= 0);
 
   void *ptr = mmap(NULL, length, PROT_READ, MAP_SHARED, pFile->fd, 0);
   return ptr;
@@ -598,7 +665,19 @@ int32_t taosUmaskFile(int32_t maskVal) {
 
 int32_t taosGetErrorFile(TdFilePtr pFile) { return errno; }
 int64_t taosGetLineFile(TdFilePtr pFile, char **__restrict__ ptrBuf) {
+  if (pFile == NULL) {
+    return -1;
+  }
+  assert(pFile->fp != NULL);
+
   size_t len = 0;
   return getline(ptrBuf, &len, pFile->fp);
 }
-int32_t taosEOFFile(TdFilePtr pFile) { return feof(pFile->fp); }
\ No newline at end of file
+int32_t taosEOFFile(TdFilePtr pFile) { 
+  if (pFile == NULL) {
+    return 0;
+  }
+  assert(pFile->fp != NULL);
+
+  return feof(pFile->fp); 
+}
\ No newline at end of file
diff --git a/source/os/src/osSysinfo.c b/source/os/src/osSysinfo.c
index 45749588c11c1d5a5ec2c6c211c5ff056a4c4455..cf9c557f5ef5b36a23de42adf9b1a54e75a27f4c 100644
--- a/source/os/src/osSysinfo.c
+++ b/source/os/src/osSysinfo.c
@@ -404,7 +404,7 @@ bool taosGetSysMemory(float *memoryUsedMB) {
 
 bool taosGetProcMemory(float *memoryUsedMB) {
   // FILE *fp = fopen(tsProcMemFile, "r");
-  TdFilePtr pFile = taosOpenFile(tsProcMemFile, TD_FILE_READ);
+  TdFilePtr pFile = taosOpenFile(tsProcMemFile, TD_FILE_READ | TD_FILE_STREAM);
   if (pFile == NULL) {
     //printf("open file:%s failed", tsProcMemFile);
     return false;
@@ -440,7 +440,7 @@ bool taosGetProcMemory(float *memoryUsedMB) {
 
 static bool taosGetSysCpuInfo(SysCpuInfo *cpuInfo) {
   // FILE *fp = fopen(tsSysCpuFile, "r");
-  TdFilePtr pFile = taosOpenFile(tsSysCpuFile, TD_FILE_READ);
+  TdFilePtr pFile = taosOpenFile(tsSysCpuFile, TD_FILE_READ | TD_FILE_STREAM);
   if (pFile == NULL) {
     //printf("open file:%s failed", tsSysCpuFile);
     return false;
@@ -465,7 +465,7 @@ static bool taosGetSysCpuInfo(SysCpuInfo *cpuInfo) {
 
 static bool taosGetProcCpuInfo(ProcCpuInfo *cpuInfo) {
   // FILE *fp = fopen(tsProcCpuFile, "r");
-  TdFilePtr pFile = taosOpenFile(tsProcCpuFile, TD_FILE_READ);
+  TdFilePtr pFile = taosOpenFile(tsProcCpuFile, TD_FILE_READ | TD_FILE_STREAM);
   if (pFile == NULL) {
     //printf("open file:%s failed", tsProcCpuFile);
     return false;
@@ -550,7 +550,7 @@ int32_t taosGetDiskSize(char *dataDir, SDiskSize *diskSize) {
 bool taosGetCardInfo(int64_t *bytes, int64_t *rbytes, int64_t *tbytes) {
   *bytes = 0;
   // FILE *fp = fopen(tsSysNetFile, "r");
-  TdFilePtr pFile = taosOpenFile(tsSysNetFile, TD_FILE_READ);
+  TdFilePtr pFile = taosOpenFile(tsSysNetFile, TD_FILE_READ | TD_FILE_STREAM);
   if (pFile == NULL) {
     //printf("open file:%s failed", tsSysNetFile);
     return false;
@@ -636,7 +636,7 @@ bool taosGetBandSpeed(float *bandSpeedKb) {
 
 bool taosReadProcIO(int64_t *rchars, int64_t *wchars) {
   // FILE *fp = fopen(tsProcIOFile, "r");
-  TdFilePtr pFile = taosOpenFile(tsProcIOFile, TD_FILE_READ);
+  TdFilePtr pFile = taosOpenFile(tsProcIOFile, TD_FILE_READ | TD_FILE_STREAM);
   if (pFile == NULL) {
     //printf("open file:%s failed", tsProcIOFile);
     return false;
diff --git a/source/util/src/tconfig.c b/source/util/src/tconfig.c
index b495e1ade187f20ecc33964492bdb4f04e9d7381..8330c10ec703b7c2484167ff5cba7d46b9eabe85 100644
--- a/source/util/src/tconfig.c
+++ b/source/util/src/tconfig.c
@@ -609,7 +609,7 @@ int32_t cfgLoadFromCfgFile(SConfig *pConfig, const char *filepath) {
   ssize_t _bytes = 0;
 
   // FILE *fp = fopen(filepath, "r");
-  TdFilePtr pFile = taosOpenFile(filepath, TD_FILE_READ);
+  TdFilePtr pFile = taosOpenFile(filepath, TD_FILE_READ | TD_FILE_STREAM);
   if (pFile == NULL) {
     terrno = TAOS_SYSTEM_ERROR(errno);
     return -1;
diff --git a/source/util/src/terror.c b/source/util/src/terror.c
index cdc8515148b98126831831667fbc4b9746c563ad..c8cafb93dde0b08edc329ebba1394bb047c3518b 100644
--- a/source/util/src/terror.c
+++ b/source/util/src/terror.c
@@ -243,6 +243,10 @@ TAOS_DEFINE_ERROR(TSDB_CODE_MND_TOO_MANY_COLUMNS,         "Too many columns")
 TAOS_DEFINE_ERROR(TSDB_CODE_MND_COLUMN_ALREADY_EXIST,     "Column already exists")
 TAOS_DEFINE_ERROR(TSDB_CODE_MND_COLUMN_NOT_EXIST,         "Column does not exist")
 
+// mnode-infoSchema
+TAOS_DEFINE_ERROR(TSDB_CODE_MND_INVALID_INFOS_TBL,        "Invalid information schema table name")
+
+
 // mnode-func
 TAOS_DEFINE_ERROR(TSDB_CODE_MND_FUNC_ALREADY_EXIST,       "Func already exists")
 TAOS_DEFINE_ERROR(TSDB_CODE_MND_FUNC_NOT_EXIST,           "Func not exists")
diff --git a/tools/shell/src/backup/shellImport.c b/tools/shell/src/backup/shellImport.c
index ce15212f8697f6c56fa3d07101576be2e099c00c..c0ab7ef461d3dcfa9df3b867153d255dd490c7ad 100644
--- a/tools/shell/src/backup/shellImport.c
+++ b/tools/shell/src/backup/shellImport.c
@@ -171,7 +171,7 @@ static void shellSourceFile(TAOS *con, char *fptr) {
   */
 
   // FILE *f = fopen(fname, "r");
-  TdFilePtr pFile = taosOpenFile(fname, TD_FILE_READ);
+  TdFilePtr pFile = taosOpenFile(fname, TD_FILE_READ | TD_FILE_STREAM);
   if (pFile == NULL) {
     fprintf(stderr, "ERROR: failed to open file %s\n", fname);
     wordfree(&full_path);
diff --git a/tools/shell/src/shellEngine.c b/tools/shell/src/shellEngine.c
index e43267f03217fd023959632010342d129e9c0624..5a989937d8cfd41050bca0a077947a6feda9514b 100644
--- a/tools/shell/src/shellEngine.c
+++ b/tools/shell/src/shellEngine.c
@@ -517,7 +517,7 @@ static int dumpResultToFile(const char *fname, TAOS_RES *tres) {
   }
 
   // FILE *fp = fopen(full_path.we_wordv[0], "w");
-  TdFilePtr pFile = taosOpenFile(full_path.we_wordv[0], TD_FILE_CTEATE | TD_FILE_WRITE | TD_FILE_TRUNC);
+  TdFilePtr pFile = taosOpenFile(full_path.we_wordv[0], TD_FILE_CTEATE | TD_FILE_WRITE | TD_FILE_TRUNC | TD_FILE_STREAM);
   if (pFile == NULL) {
     fprintf(stderr, "ERROR: failed to open file: %s\n", full_path.we_wordv[0]);
     wordfree(&full_path);
@@ -904,7 +904,7 @@ void read_history() {
   get_history_path(f_history);
 
   // FILE *f = fopen(f_history, "r");
-  TdFilePtr pFile = taosOpenFile(f_history, TD_FILE_READ);
+  TdFilePtr pFile = taosOpenFile(f_history, TD_FILE_READ | TD_FILE_STREAM);
   if (pFile == NULL) {
 #ifndef WINDOWS
     if (errno != ENOENT) {
@@ -934,7 +934,7 @@ void write_history() {
   get_history_path(f_history);
 
   // FILE *f = fopen(f_history, "w");
-  TdFilePtr pFile = taosOpenFile(f_history, TD_FILE_CTEATE | TD_FILE_WRITE | TD_FILE_TRUNC);
+  TdFilePtr pFile = taosOpenFile(f_history, TD_FILE_CTEATE | TD_FILE_WRITE | TD_FILE_TRUNC | TD_FILE_STREAM);
   if (pFile == NULL) {
 #ifndef WINDOWS
     fprintf(stderr, "Failed to open file %s for write, reason:%s\n", f_history, strerror(errno));
@@ -991,7 +991,7 @@ void source_file(TAOS *con, char *fptr) {
   */
 
   // FILE *f = fopen(fname, "r");
-  TdFilePtr pFile = taosOpenFile(fname, TD_FILE_READ);
+  TdFilePtr pFile = taosOpenFile(fname, TD_FILE_READ | TD_FILE_STREAM);
   if (pFile == NULL) {
     fprintf(stderr, "ERROR: failed to open file %s\n", fname);
     wordfree(&full_path);