[td-98]fix bugs in descending order query for tables

src/client/src/tscFunctionImpl.c

@@ -3578,121 +3578,6 @@ void spread_function_finalizer(SQLFunctionCtx *pCtx) {
   doFinalizer(pCtx);
 }
 
-/*
- * Compare two strings
- *    TSDB_MATCH:            Match
- *    TSDB_NOMATCH:          No match
- *    TSDB_NOWILDCARDMATCH:  No match in spite of having * or % wildcards.
- * Like matching rules:
- *      '%': Matches zero or more characters
- *      '_': Matches one character
- *
- */
-int patternMatch(const char *patterStr, const char *str, size_t size, const SPatternCompareInfo *pInfo) {
-  char c, c1;
-  
-  int32_t i = 0;
-  int32_t j = 0;
-  
-  while ((c = patterStr[i++]) != 0) {
-    if (c == pInfo->matchAll) { /* Match "*" */
-      
-      while ((c = patterStr[i++]) == pInfo->matchAll || c == pInfo->matchOne) {
-        if (c == pInfo->matchOne && (j > size || str[j++] == 0)) {
-          // empty string, return not match
-          return TSDB_PATTERN_NOWILDCARDMATCH;
-        }
-      }
-      
-      if (c == 0) {
-        return TSDB_PATTERN_MATCH; /* "*" at the end of the pattern matches */
-      }
-      
-      char next[3] = {toupper(c), tolower(c), 0};
-      while (1) {
-        size_t n = strcspn(str, next);
-        str += n;
-        
-        if (str[0] == 0 || (n >= size - 1)) {
-          break;
-        }
-        
-        int32_t ret = patternMatch(&patterStr[i], ++str, size - n - 1, pInfo);
-        if (ret != TSDB_PATTERN_NOMATCH) {
-          return ret;
-        }
-      }
-      return TSDB_PATTERN_NOWILDCARDMATCH;
-    }
-    
-    c1 = str[j++];
-    
-    if (j <= size) {
-      if (c == c1 || tolower(c) == tolower(c1) || (c == pInfo->matchOne && c1 != 0)) {
-        continue;
-      }
-    }
-    
-    return TSDB_PATTERN_NOMATCH;
-  }
-  
-  return (str[j] == 0 || j >= size) ? TSDB_PATTERN_MATCH : TSDB_PATTERN_NOMATCH;
-}
-
-int WCSPatternMatch(const wchar_t *patterStr, const wchar_t *str, size_t size, const SPatternCompareInfo *pInfo) {
-  wchar_t c, c1;
-  wchar_t matchOne = L'_';  // "_"
-  wchar_t matchAll = L'%';  // "%"
-  
-  int32_t i = 0;
-  int32_t j = 0;
-  
-  while ((c = patterStr[i++]) != 0) {
-    if (c == matchAll) { /* Match "%" */
-      
-      while ((c = patterStr[i++]) == matchAll || c == matchOne) {
-        if (c == matchOne && (j > size || str[j++] == 0)) {
-          return TSDB_PATTERN_NOWILDCARDMATCH;
-        }
-      }
-      if (c == 0) {
-        return TSDB_PATTERN_MATCH;
-      }
-      
-      wchar_t accept[3] = {towupper(c), towlower(c), 0};
-      while (1) {
-        size_t n = wcsspn(str, accept);
-        
-        str += n;
-        if (str[0] == 0 || (n >= size - 1)) {
-          break;
-        }
-        
-        str++;
-        
-        int32_t ret = WCSPatternMatch(&patterStr[i], str, wcslen(str), pInfo);
-        if (ret != TSDB_PATTERN_NOMATCH) {
-          return ret;
-        }
-      }
-      
-      return TSDB_PATTERN_NOWILDCARDMATCH;
-    }
-    
-    c1 = str[j++];
-    
-    if (j <= size) {
-      if (c == c1 || towlower(c) == towlower(c1) || (c == matchOne && c1 != 0)) {
-        continue;
-      }
-    }
-    
-    return TSDB_PATTERN_NOMATCH;
-  }
-  
-  return (str[j] == 0 || j >= size) ? TSDB_PATTERN_MATCH : TSDB_PATTERN_NOMATCH;
-}
-
 static void getStatics_i8(int64_t *primaryKey, int32_t type, int8_t *data, int32_t numOfRow, int64_t *min, int64_t *max,
                           int64_t *sum, int16_t *minIndex, int16_t *maxIndex, int32_t *numOfNull) {
   *min = INT64_MAX;

src/client/src/tscSQLParser.c

@@ -30,6 +30,7 @@
 #include "ttokendef.h"
 
 #include "name.h"
+#include "tcompare.h"
 
 #define DEFAULT_PRIMARY_TIMESTAMP_COL_NAME "_c0"
 

src/mnode/src/mgmtTable.c

@@ -15,19 +15,13 @@
 
 #define _DEFAULT_SOURCE
 #include "os.h"
+
 #include "taosmsg.h"
-#include "tscompression.h"
-#include "tskiplist.h"
 #include "ttime.h"
 #include "tutil.h"
-#include "qast.h"
-#include "qextbuffer.h"
 #include "taoserror.h"
 #include "taosmsg.h"
 #include "tscompression.h"
-#include "tskiplist.h"
-#include "tsqlfunction.h"
-#include "ttime.h"
 #include "name.h"
 #include "taccount.h"
 #include "mgmtDClient.h"
@@ -42,6 +36,7 @@
 #include "mgmtTable.h"
 #include "mgmtUser.h"
 #include "mgmtVgroup.h"
+#include "tcompare.h"
 
 void *  tsChildTableSdb;
 void *  tsSuperTableSdb;

src/query/inc/queryExecutor.h

@@ -160,7 +160,7 @@ typedef struct SQueryRuntimeEnv {
   SQueryCostSummary  summary;
   bool               stableQuery;  // super table query or not
   void*              pQueryHandle;
-
+  void*              pSubQueryHandle; // another thread for
   SDiskbasedResultBuf* pResultBuf;  // query result buffer based on blocked-wised disk file
 } SQueryRuntimeEnv;
 
@@ -172,6 +172,8 @@ typedef struct SQInfo {
   int32_t          code;          // error code to returned to client
   sem_t            dataReady;
   SArray*          pTableIdList;  // table id list
+  void*            tsdb;
+  
   SQueryRuntimeEnv runtimeEnv;
   int32_t          subgroupIdx;
   int32_t          offset; /* offset in group result set of subgroup */

src/query/inc/tsqlfunction.h

@@ -79,17 +79,10 @@ extern "C" {
 #define TSDB_BASE_FUNC_SO TSDB_FUNCSTATE_SO | TSDB_FUNCSTATE_STREAM | TSDB_FUNCSTATE_METRIC | TSDB_FUNCSTATE_OF
 #define TSDB_BASE_FUNC_MO TSDB_FUNCSTATE_MO | TSDB_FUNCSTATE_STREAM | TSDB_FUNCSTATE_METRIC | TSDB_FUNCSTATE_OF
 
-#define TSDB_PATTERN_MATCH            0
-#define TSDB_PATTERN_NOMATCH          1
-#define TSDB_PATTERN_NOWILDCARDMATCH  2
-#define TSDB_PATTERN_STRING_MAX_LEN   20
 
 #define TSDB_FUNCTIONS_NAME_MAX_LENGTH 16
 #define TSDB_AVG_FUNCTION_INTER_BUFFER_SIZE 50
 
-#define PATTERN_COMPARE_INFO_INITIALIZER \
-  { '%', '_' }
-
 #define DATA_SET_FLAG ','  // to denote the output area has data, not null value
 #define DATA_SET_FLAG_SIZE sizeof(DATA_SET_FLAG)
 
@@ -222,20 +215,11 @@ typedef struct SQLAggFuncElem {
   int32_t (*dataReqFunc)(SQLFunctionCtx *pCtx, TSKEY start, TSKEY end, int32_t colId);
 } SQLAggFuncElem;
 
-typedef struct SPatternCompareInfo {
-  char matchAll;  // symbol for match all wildcard, default: '%'
-  char matchOne;  // symbol for match one wildcard, default: '_'
-} SPatternCompareInfo;
-
 #define GET_RES_INFO(ctx) ((ctx)->resultInfo)
 
 int32_t getResultDataInfo(int32_t dataType, int32_t dataBytes, int32_t functionId, int32_t param, int16_t *type,
                           int16_t *len, int16_t *interResBytes, int16_t extLength, bool isSuperTable);
 
-int patternMatch(const char *zPattern, const char *zString, size_t size, const SPatternCompareInfo *pInfo);
-
-int WCSPatternMatch(const wchar_t *zPattern, const wchar_t *zString, size_t size, const SPatternCompareInfo *pInfo);
-
 #define IS_STREAM_QUERY_VALID(x)  (((x)&TSDB_FUNCSTATE_STREAM) != 0)
 #define IS_MULTIOUTPUT(x)         (((x)&TSDB_FUNCSTATE_MO) != 0)
 #define IS_SINGLEOUTPUT(x)        (((x)&TSDB_FUNCSTATE_SO) != 0)

src/query/src/queryExecutor.c

@@ -2565,7 +2565,7 @@ static int64_t doScanAllDataBlocks(SQueryRuntimeEnv *pRuntimeEnv) {
   dTrace("QInfo:%p query start, qrange:%" PRId64 "-%" PRId64 ", lastkey:%" PRId64 ", order:%d",
          GET_QINFO_ADDR(pRuntimeEnv), pQuery->window.skey, pQuery->window.ekey, pQuery->lastKey, pQuery->order.order);
 
-  tsdb_query_handle_t pQueryHandle = pRuntimeEnv->pQueryHandle;
+  tsdb_query_handle_t pQueryHandle = pRuntimeEnv->scanFlag == MASTER_SCAN? pRuntimeEnv->pQueryHandle:pRuntimeEnv->pSubQueryHandle;
   while (tsdbNextDataBlock(pQueryHandle)) {
     
     if (isQueryKilled(GET_QINFO_ADDR(pRuntimeEnv))) {
@@ -3520,7 +3520,8 @@ void scanAllDataBlocks(SQueryRuntimeEnv *pRuntimeEnv) {
   setQueryStatus(pQuery, QUERY_NOT_COMPLETED);
 
   // store the start query position
-  void *pos = tsdbDataBlockTell(pRuntimeEnv->pQueryHandle);
+//  void *pos = tsdbDataBlockTell(pRuntimeEnv->pQueryHandle);
+  SQInfo* pQInfo = (SQInfo*) GET_QINFO_ADDR(pRuntimeEnv);
   
   int64_t skey = pQuery->lastKey;
   int32_t status = pQuery->status;
@@ -3543,7 +3544,21 @@ void scanAllDataBlocks(SQueryRuntimeEnv *pRuntimeEnv) {
     }
 
     // set the correct start position, and load the corresponding block in buffer for next round scan all data blocks.
-    /*int32_t ret =*/ tsdbDataBlockSeek(pRuntimeEnv->pQueryHandle, pos);
+//    /*int32_t ret =*/ tsdbDataBlockSeek(pRuntimeEnv->pQueryHandle, pos);
+  
+    STsdbQueryCond cond = {
+        .twindow = {pQuery->window.skey, pQuery->lastKey},
+        .order   = pQuery->order.order,
+        .colList = pQuery->colList,
+    };
+  
+    SArray *cols = taosArrayInit(pQuery->numOfCols, sizeof(pQuery->colList[0]));
+    for (int32_t i = 0; i < pQuery->numOfCols; ++i) {
+      taosArrayPush(cols, &pQuery->colList[i]);
+    }
+  
+    pRuntimeEnv->pSubQueryHandle = tsdbQueryByTableId(pQInfo->tsdb, &cond, pQInfo->pTableIdList, cols);
+    taosArrayDestroy(cols);
   
     status = pQuery->status;
     pRuntimeEnv->windowResInfo.curIndex = activeSlot;
@@ -3551,7 +3566,7 @@ void scanAllDataBlocks(SQueryRuntimeEnv *pRuntimeEnv) {
     setQueryStatus(pQuery, QUERY_NOT_COMPLETED);
     pRuntimeEnv->scanFlag = REPEAT_SCAN;
 
-    /* check if query is killed or not */
+    // check if query is killed or not
     if (isQueryKilled(GET_QINFO_ADDR(pRuntimeEnv))) {
       return;
     }
@@ -4179,6 +4194,7 @@ int32_t doInitQInfo(SQInfo *pQInfo, void *param, void* tsdb, bool isSTableQuery)
   
   pRuntimeEnv->pQueryHandle = tsdbQueryByTableId(tsdb, &cond, pQInfo->pTableIdList, cols);
   taosArrayDestroy(cols);
+  pQInfo->tsdb = tsdb;
   
   pRuntimeEnv->pQuery = pQuery;
   pRuntimeEnv->pTSBuf = param;
@@ -4972,7 +4988,6 @@ static void tableIntervalProcessImpl(SQueryRuntimeEnv *pRuntimeEnv) {
   SQuery *pQuery = pRuntimeEnv->pQuery;
 
   while (1) {
-//    initCtxOutputBuf(pRuntimeEnv);
     scanAllDataBlocks(pRuntimeEnv);
 
     if (isQueryKilled(GET_QINFO_ADDR(pRuntimeEnv))) {

src/util/inc/tcompare.h

@@ -16,8 +16,24 @@
 #ifndef TDENGINE_TCOMPARE_H
 #define TDENGINE_TCOMPARE_H
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #include "os.h"
 
+#define TSDB_PATTERN_MATCH 0
+#define TSDB_PATTERN_NOMATCH 1
+#define TSDB_PATTERN_NOWILDCARDMATCH 2
+#define TSDB_PATTERN_STRING_MAX_LEN 20
+
+#define PATTERN_COMPARE_INFO_INITIALIZER { '%', '_' }
+
+typedef struct SPatternCompareInfo {
+  char matchAll;  // symbol for match all wildcard, default: '%'
+  char matchOne;  // symbol for match one wildcard, default: '_'
+} SPatternCompareInfo;
+
 int32_t compareInt32Val(const void *pLeft, const void *pRight);
 
 int32_t compareInt64Val(const void *pLeft, const void *pRight);
@@ -36,8 +52,16 @@ int32_t compareStrVal(const void *pLeft, const void *pRight);
 
 int32_t compareWStrVal(const void *pLeft, const void *pRight);
 
+int patternMatch(const char *zPattern, const char *zString, size_t size, const SPatternCompareInfo *pInfo);
+
+int WCSPatternMatch(const wchar_t *zPattern, const wchar_t *zString, size_t size, const SPatternCompareInfo *pInfo);
+
 __compar_fn_t getKeyComparFunc(int32_t keyType);
 
 __compar_fn_t getComparFunc(int32_t type, int32_t filterDataType);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif  // TDENGINE_TCOMPARE_H

src/util/src/tcompare.c

 #include "taosdef.h"
 #include "tcompare.h"
 
+#include "tutil.h"
+
 int32_t compareInt32Val(const void *pLeft, const void *pRight) {
   int32_t ret = GET_INT32_VAL(pLeft) - GET_INT32_VAL(pRight);
   if (ret == 0) {
@@ -102,6 +104,143 @@ int32_t compareWStrVal(const void *pLeft, const void *pRight) {
   return 0;
 }
 
+/*
+ * Compare two strings
+ *    TSDB_MATCH:            Match
+ *    TSDB_NOMATCH:          No match
+ *    TSDB_NOWILDCARDMATCH:  No match in spite of having * or % wildcards.
+ * Like matching rules:
+ *      '%': Matches zero or more characters
+ *      '_': Matches one character
+ *
+ */
+int patternMatch(const char *patterStr, const char *str, size_t size, const SPatternCompareInfo *pInfo) {
+  char c, c1;
+  
+  int32_t i = 0;
+  int32_t j = 0;
+  
+  while ((c = patterStr[i++]) != 0) {
+    if (c == pInfo->matchAll) { /* Match "*" */
+      
+      while ((c = patterStr[i++]) == pInfo->matchAll || c == pInfo->matchOne) {
+        if (c == pInfo->matchOne && (j > size || str[j++] == 0)) {
+          // empty string, return not match
+          return TSDB_PATTERN_NOWILDCARDMATCH;
+        }
+      }
+      
+      if (c == 0) {
+        return TSDB_PATTERN_MATCH; /* "*" at the end of the pattern matches */
+      }
+      
+      char next[3] = {toupper(c), tolower(c), 0};
+      while (1) {
+        size_t n = strcspn(str, next);
+        str += n;
+        
+        if (str[0] == 0 || (n >= size - 1)) {
+          break;
+        }
+        
+        int32_t ret = patternMatch(&patterStr[i], ++str, size - n - 1, pInfo);
+        if (ret != TSDB_PATTERN_NOMATCH) {
+          return ret;
+        }
+      }
+      return TSDB_PATTERN_NOWILDCARDMATCH;
+    }
+    
+    c1 = str[j++];
+    
+    if (j <= size) {
+      if (c == c1 || tolower(c) == tolower(c1) || (c == pInfo->matchOne && c1 != 0)) {
+        continue;
+      }
+    }
+    
+    return TSDB_PATTERN_NOMATCH;
+  }
+  
+  return (str[j] == 0 || j >= size) ? TSDB_PATTERN_MATCH : TSDB_PATTERN_NOMATCH;
+}
+
+int WCSPatternMatch(const wchar_t *patterStr, const wchar_t *str, size_t size, const SPatternCompareInfo *pInfo) {
+  wchar_t c, c1;
+  wchar_t matchOne = L'_';  // "_"
+  wchar_t matchAll = L'%';  // "%"
+  
+  int32_t i = 0;
+  int32_t j = 0;
+  
+  while ((c = patterStr[i++]) != 0) {
+    if (c == matchAll) { /* Match "%" */
+      
+      while ((c = patterStr[i++]) == matchAll || c == matchOne) {
+        if (c == matchOne && (j > size || str[j++] == 0)) {
+          return TSDB_PATTERN_NOWILDCARDMATCH;
+        }
+      }
+      if (c == 0) {
+        return TSDB_PATTERN_MATCH;
+      }
+      
+      wchar_t accept[3] = {towupper(c), towlower(c), 0};
+      while (1) {
+        size_t n = wcsspn(str, accept);
+        
+        str += n;
+        if (str[0] == 0 || (n >= size - 1)) {
+          break;
+        }
+        
+        str++;
+        
+        int32_t ret = WCSPatternMatch(&patterStr[i], str, wcslen(str), pInfo);
+        if (ret != TSDB_PATTERN_NOMATCH) {
+          return ret;
+        }
+      }
+      
+      return TSDB_PATTERN_NOWILDCARDMATCH;
+    }
+    
+    c1 = str[j++];
+    
+    if (j <= size) {
+      if (c == c1 || towlower(c) == towlower(c1) || (c == matchOne && c1 != 0)) {
+        continue;
+      }
+    }
+    
+    return TSDB_PATTERN_NOMATCH;
+  }
+  
+  return (str[j] == 0 || j >= size) ? TSDB_PATTERN_MATCH : TSDB_PATTERN_NOMATCH;
+}
+
+static UNUSED_FUNC int32_t compareStrPatternComp(const void* pLeft, const void* pRight) {
+  SPatternCompareInfo pInfo = {'%', '_'};
+  
+  const char* pattern = pRight;
+  const char* str = pLeft;
+  
+  int32_t ret = patternMatch(pattern, str, strlen(str), &pInfo);
+  
+  return (ret == TSDB_PATTERN_MATCH) ? 0 : 1;
+}
+
+static UNUSED_FUNC int32_t compareWStrPatternComp(const void* pLeft, const void* pRight) {
+  SPatternCompareInfo pInfo = {'%', '_'};
+  
+  const wchar_t* pattern = pRight;
+  const wchar_t* str = pLeft;
+  
+  int32_t ret = WCSPatternMatch(pattern, str, wcslen(str), &pInfo);
+  
+  return (ret == TSDB_PATTERN_MATCH) ? 0 : 1;
+}
+
 __compar_fn_t getComparFunc(int32_t type, int32_t filterDataType) {
   __compar_fn_t comparFn = NULL;
   

src/vnode/tsdb/src/tsdbRead.c

@@ -87,6 +87,13 @@ typedef struct STableBlockInfo {
   int32_t          groupIdx; /* number of group is less than the total number of tables */
 } STableBlockInfo;
 
+typedef struct SBlockOrderSupporter {
+  int32_t             numOfTables;
+  STableBlockInfo** pDataBlockInfo;
+  int32_t*            blockIndexArray;
+  int32_t*            numOfBlocksPerMeter;
+} SBlockOrderSupporter;
+
 typedef struct STsdbQueryHandle {
   STsdbRepo*    pTsdb;
   SQueryFilePos cur;    // current position
@@ -222,7 +229,7 @@ static bool hasMoreDataInCache(STsdbQueryHandle* pHandle) {
 
 // todo dynamic get the daysperfile
 static int32_t getFileIdFromKey(TSKEY key) {
-  int64_t fid = (int64_t)(key / 10);  // set the starting fileId
+  int64_t fid = (int64_t)(key / (10 * tsMsPerDay[0]));  // set the starting fileId
   if (fid > INT32_MAX) {
     fid = INT32_MAX;
   }
@@ -230,7 +237,32 @@ static int32_t getFileIdFromKey(TSKEY key) {
   return fid;
 }
 
-static int32_t binarySearchForBlockImpl(SCompBlock* pBlock, int32_t numOfBlocks, TSKEY skey, int32_t order);
+static int32_t binarySearchForBlockImpl(SCompBlock* pBlock, int32_t numOfBlocks, TSKEY skey, int32_t order) {
+  int32_t firstSlot = 0;
+  int32_t lastSlot = numOfBlocks - 1;
+  
+  int32_t midSlot = firstSlot;
+  
+  while (1) {
+    numOfBlocks = lastSlot - firstSlot + 1;
+    midSlot = (firstSlot + (numOfBlocks >> 1));
+    
+    if (numOfBlocks == 1) break;
+    
+    if (skey > pBlock[midSlot].keyLast) {
+      if (numOfBlocks == 2) break;
+      if ((order == TSDB_ORDER_DESC) && (skey < pBlock[midSlot + 1].keyFirst)) break;
+      firstSlot = midSlot + 1;
+    } else if (skey < pBlock[midSlot].keyFirst) {
+      if ((order == TSDB_ORDER_ASC) && (skey > pBlock[midSlot - 1].keyLast)) break;
+      lastSlot = midSlot - 1;
+    } else {
+      break;  // got the slot
+    }
+  }
+  
+  return midSlot;
+}
 
 static int32_t getFileCompInfo(STsdbQueryHandle* pQueryHandle, int32_t* numOfBlocks, int32_t type) {
   // todo check open file failed
@@ -299,33 +331,6 @@ static int32_t getFileCompInfo(STsdbQueryHandle* pQueryHandle, int32_t* numOfBlo
   return TSDB_CODE_SUCCESS;
 }
 
-int32_t binarySearchForBlockImpl(SCompBlock* pBlock, int32_t numOfBlocks, TSKEY skey, int32_t order) {
-  int32_t firstSlot = 0;
-  int32_t lastSlot = numOfBlocks - 1;
-
-  int32_t midSlot = firstSlot;
-
-  while (1) {
-    numOfBlocks = lastSlot - firstSlot + 1;
-    midSlot = (firstSlot + (numOfBlocks >> 1));
-
-    if (numOfBlocks == 1) break;
-
-    if (skey > pBlock[midSlot].keyLast) {
-      if (numOfBlocks == 2) break;
-      if ((order == TSDB_ORDER_DESC) && (skey < pBlock[midSlot + 1].keyFirst)) break;
-      firstSlot = midSlot + 1;
-    } else if (skey < pBlock[midSlot].keyFirst) {
-      if ((order == TSDB_ORDER_ASC) && (skey > pBlock[midSlot - 1].keyLast)) break;
-      lastSlot = midSlot - 1;
-    } else {
-      break;  // got the slot
-    }
-  }
-
-  return midSlot;
-}
-
 static SDataBlockInfo getTrueDataBlockInfo(STableCheckInfo* pCheckInfo, SCompBlock* pBlock) {
   SDataBlockInfo info = {
       .window = {.skey = pBlock->keyFirst, .ekey = pBlock->keyLast},
@@ -338,7 +343,34 @@ static SDataBlockInfo getTrueDataBlockInfo(STableCheckInfo* pCheckInfo, SCompBlo
   return info;
 }
 
-SArray*        getDefaultLoadColumns(STsdbQueryHandle* pQueryHandle, bool loadTS);
+static SArray* getColumnIdList(STsdbQueryHandle* pQueryHandle) {
+  size_t numOfCols = QH_GET_NUM_OF_COLS(pQueryHandle);
+  assert(numOfCols <= TSDB_MAX_COLUMNS);
+  
+  SArray* pIdList = taosArrayInit(numOfCols, sizeof(int16_t));
+  for (int32_t i = 0; i < numOfCols; ++i) {
+    SColumnInfoData* pCol = taosArrayGet(pQueryHandle->pColumns, i);
+    taosArrayPush(pIdList, &pCol->info.colId);
+  }
+  
+  return pIdList;
+}
+
+static SArray* getDefaultLoadColumns(STsdbQueryHandle* pQueryHandle, bool loadTS) {
+  SArray* pLocalIdList = getColumnIdList(pQueryHandle);
+  
+  // check if the primary time stamp column needs to load
+  int16_t colId = *(int16_t*)taosArrayGet(pLocalIdList, 0);
+  
+  // the primary timestamp column does not be included in the the specified load column list, add it
+  if (loadTS && colId != 0) {
+    int16_t columnId = 0;
+    taosArrayInsert(pLocalIdList, 0, &columnId);
+  }
+  
+  return pLocalIdList;
+}
+
 static void    filterDataInDataBlock(STsdbQueryHandle* pQueryHandle, STableCheckInfo* pCheckInfo, SCompBlock* pBlock,
                                      SArray* sa);
 static int32_t binarySearchForKey(char* pValue, int num, TSKEY key, int order);
@@ -388,7 +420,7 @@ static bool loadFileDataBlock(STsdbQueryHandle* pQueryHandle, SCompBlock* pBlock
 
   if (QUERY_IS_ASC_QUERY(pQueryHandle->order)) {
     // query ended in current block
-    if (pQueryHandle->window.ekey < pBlock->keyLast) {
+    if (pQueryHandle->window.ekey < pBlock->keyLast || pCheckInfo->lastKey > pBlock->keyFirst) {
       if (!doLoadFileDataBlock(pQueryHandle, pBlock, pCheckInfo)) {
         return false;
       }
@@ -430,62 +462,62 @@ static bool loadFileDataBlock(STsdbQueryHandle* pQueryHandle, SCompBlock* pBlock
   return pQueryHandle->realNumOfRows > 0;
 }
 
-bool moveToNextBlock(STsdbQueryHandle* pQueryHandle, int32_t step) {
-  SQueryFilePos* cur = &pQueryHandle->cur;
-
-  if (pQueryHandle->cur.fid >= 0) {
-    /*
-     * 1. ascending  order. The last data block of data file
-     * 2. descending order. The first block of file
-     */
-    STableCheckInfo* pCheckInfo = taosArrayGet(pQueryHandle->pTableCheckInfo, pQueryHandle->activeIndex);
-    int32_t          tid = pCheckInfo->tableId.tid;
-
-    if ((step == QUERY_ASC_FORWARD_STEP &&
-         (pQueryHandle->cur.slot == pQueryHandle->compIndex[tid].numOfSuperBlocks - 1)) ||
-        (step == QUERY_DESC_FORWARD_STEP && (pQueryHandle->cur.slot == 0))) {
-      // temporarily keep the position value, in case of no data qualified when move forwards(backwards)
-      //      SQueryFilePos save = pQueryHandle->cur;
-      pQueryHandle->pFileGroup = tsdbGetFileGroupNext(&pQueryHandle->fileIter);
-
-      int32_t fid = -1;
-      int32_t numOfBlocks = 0;
-
-      if (pQueryHandle->pFileGroup != NULL) {
-        if ((fid = getFileCompInfo(pQueryHandle, &numOfBlocks, 1)) < 0) {
-        } else {
-          cur->slot = (step == QUERY_ASC_FORWARD_STEP) ? 0 : pQueryHandle->numOfBlocks - 1;
-          cur->pos = (step == QUERY_ASC_FORWARD_STEP) ? 0 : pQueryHandle->pBlock[cur->slot].numOfPoints - 1;
-
-          SCompBlock* pBlock = &pCheckInfo->pCompInfo->blocks[cur->slot];
-          cur->fid = pQueryHandle->pFileGroup->fileId;
-          assert(cur->pos >= 0 && cur->fid >= 0 && cur->slot >= 0);
-
-          if (pBlock->keyFirst > pQueryHandle->window.ekey) {  // done
-            return false;
-          }
-
-          return loadFileDataBlock(pQueryHandle, pBlock, pCheckInfo);
-        }
-      } else {  // check data in cache
-        pQueryHandle->cur.fid = -1;
-        return hasMoreDataInCache(pQueryHandle);
-      }
-    } else {  // next block in the same file
-      cur->slot += step;
-
-      SCompBlock* pBlock = &pCheckInfo->pCompInfo->blocks[cur->slot];
-      cur->pos = (step == QUERY_ASC_FORWARD_STEP) ? 0 : pBlock->numOfPoints - 1;
-      return loadFileDataBlock(pQueryHandle, pBlock, pCheckInfo);
-    }
-  } else {  // data in cache
-    return hasMoreDataInCache(pQueryHandle);
-  }
-
-  return false;
-}
+//bool moveToNextBlock(STsdbQueryHandle* pQueryHandle, int32_t step) {
+//  SQueryFilePos* cur = &pQueryHandle->cur;
+//
+//  if (pQueryHandle->cur.fid >= 0) {
+//    /*
+//     * 1. ascending  order. The last data block of data file
+//     * 2. descending order. The first block of file
+//     */
+//    STableCheckInfo* pCheckInfo = taosArrayGet(pQueryHandle->pTableCheckInfo, pQueryHandle->activeIndex);
+//    int32_t          tid = pCheckInfo->tableId.tid;
+//
+//    if ((step == QUERY_ASC_FORWARD_STEP &&
+//         (pQueryHandle->cur.slot == pQueryHandle->compIndex[tid].numOfSuperBlocks - 1)) ||
+//        (step == QUERY_DESC_FORWARD_STEP && (pQueryHandle->cur.slot == 0))) {
+//      // temporarily keep the position value, in case of no data qualified when move forwards(backwards)
+//      //      SQueryFilePos save = pQueryHandle->cur;
+//      pQueryHandle->pFileGroup = tsdbGetFileGroupNext(&pQueryHandle->fileIter);
+//
+//      int32_t fid = -1;
+//      int32_t numOfBlocks = 0;
+//
+//      if (pQueryHandle->pFileGroup != NULL) {
+//        if ((fid = getFileCompInfo(pQueryHandle, &numOfBlocks, 1)) < 0) {
+//        } else {
+//          cur->slot = (step == QUERY_ASC_FORWARD_STEP) ? 0 : pQueryHandle->numOfBlocks - 1;
+//          cur->pos = (step == QUERY_ASC_FORWARD_STEP) ? 0 : pQueryHandle->pBlock[cur->slot].numOfPoints - 1;
+//
+//          SCompBlock* pBlock = &pCheckInfo->pCompInfo->blocks[cur->slot];
+//          cur->fid = pQueryHandle->pFileGroup->fileId;
+//          assert(cur->pos >= 0 && cur->fid >= 0 && cur->slot >= 0);
+//
+//          if (pBlock->keyFirst > pQueryHandle->window.ekey) {  // done
+//            return false;
+//          }
+//
+//          return loadFileDataBlock(pQueryHandle, pBlock, pCheckInfo);
+//        }
+//      } else {  // check data in cache
+//        pQueryHandle->cur.fid = -1;
+//        return hasMoreDataInCache(pQueryHandle);
+//      }
+//    } else {  // next block in the same file
+//      cur->slot += step;
+//
+//      SCompBlock* pBlock = &pCheckInfo->pCompInfo->blocks[cur->slot];
+//      cur->pos = (step == QUERY_ASC_FORWARD_STEP) ? 0 : pBlock->numOfPoints - 1;
+//      return loadFileDataBlock(pQueryHandle, pBlock, pCheckInfo);
+//    }
+//  } else {  // data in cache
+//    return hasMoreDataInCache(pQueryHandle);
+//  }
+//
+//  return false;
+//}
 
-int vnodeBinarySearchKey(char* pValue, int num, TSKEY key, int order) {
+static int vnodeBinarySearchKey(char* pValue, int num, TSKEY key, int order) {
   int    firstPos, lastPos, midPos = -1;
   int    numOfPoints;
   TSKEY* keyList;
@@ -572,7 +604,7 @@ static void filterDataInDataBlock(STsdbQueryHandle* pQueryHandle, STableCheckInf
         pQueryHandle->realNumOfRows = 0;
         return;
       } else {
-        pQueryHandle->realNumOfRows = endPos - cur->pos;
+        pQueryHandle->realNumOfRows = endPos - cur->pos + 1;
       }
 
       pCheckInfo->lastKey = ((int64_t*)(pCols->cols[0].pData))[endPos] + 1;
@@ -581,10 +613,8 @@ static void filterDataInDataBlock(STsdbQueryHandle* pQueryHandle, STableCheckInf
         pQueryHandle->realNumOfRows = 0;
         return;
       } else {
-        pQueryHandle->realNumOfRows = cur->pos - endPos;
+        pQueryHandle->realNumOfRows = cur->pos - endPos + 1;
       }
-
-      assert(0);
     }
   }
 
@@ -614,34 +644,6 @@ static void filterDataInDataBlock(STsdbQueryHandle* pQueryHandle, STableCheckInf
   cur->pos = endPos;
 }
 
-static SArray* getColumnIdList(STsdbQueryHandle* pQueryHandle) {
-  size_t numOfCols = QH_GET_NUM_OF_COLS(pQueryHandle);
-  assert(numOfCols <= TSDB_MAX_COLUMNS);
-  
-  SArray* pIdList = taosArrayInit(numOfCols, sizeof(int16_t));
-  for (int32_t i = 0; i < numOfCols; ++i) {
-    SColumnInfoData* pCol = taosArrayGet(pQueryHandle->pColumns, i);
-    taosArrayPush(pIdList, &pCol->info.colId);
-  }
-
-  return pIdList;
-}
-
-SArray* getDefaultLoadColumns(STsdbQueryHandle* pQueryHandle, bool loadTS) {
-  SArray* pLocalIdList = getColumnIdList(pQueryHandle);
-
-  // check if the primary time stamp column needs to load
-  int16_t colId = *(int16_t*)taosArrayGet(pLocalIdList, 0);
-
-  // the primary timestamp column does not be included in the the specified load column list, add it
-  if (loadTS && colId != 0) {
-    int16_t columnId = 0;
-    taosArrayInsert(pLocalIdList, 0, &columnId);
-  }
-
-  return pLocalIdList;
-}
-
 int32_t binarySearchForKey(char* pValue, int num, TSKEY key, int order) {
   int    firstPos, lastPos, midPos = -1;
   int    numOfPoints;
@@ -702,79 +704,72 @@ int32_t binarySearchForKey(char* pValue, int num, TSKEY key, int order) {
   return midPos;
 }
 
-static bool getQualifiedDataBlock(STsdbQueryHandle* pQueryHandle, STableCheckInfo* pCheckInfo, int32_t type) {
-  STsdbFileH* pFileHandle = tsdbGetFile(pQueryHandle->pTsdb);
-  int32_t     fid = getFileIdFromKey(pCheckInfo->lastKey);
-
-  tsdbInitFileGroupIter(pFileHandle, &pQueryHandle->fileIter, TSDB_FGROUP_ITER_FORWARD);
-  tsdbSeekFileGroupIter(&pQueryHandle->fileIter, fid);
-  pQueryHandle->pFileGroup = tsdbGetFileGroupNext(&pQueryHandle->fileIter);
-
-  SQueryFilePos* cur = &pQueryHandle->cur;
-
-  int32_t tid = pCheckInfo->tableId.tid;
-  int32_t numOfBlocks = 0;
-
-  while (pQueryHandle->pFileGroup != NULL) {
-    if (getFileCompInfo(pQueryHandle, &numOfBlocks, 1) != TSDB_CODE_SUCCESS) {
-      break;
-    }
-
-    assert(pCheckInfo->numOfBlocks >= 0);
-
-    // no data block in current file, try next
-    if (pCheckInfo->numOfBlocks > 0) {
-      cur->fid = pQueryHandle->pFileGroup->fileId;
-      break;
-    }
-
-    dTrace("%p no data block in file, fid:%d, tid:%d, try next, %p", pQueryHandle, pQueryHandle->pFileGroup->fileId,
-           tid, pQueryHandle->qinfo);
-
-    pQueryHandle->pFileGroup = tsdbGetFileGroupNext(&pQueryHandle->fileIter);
-  }
-
-  if (pCheckInfo->numOfBlocks == 0) {
-    return false;
-  }
-
-  cur->slot = 0;  // always start from the first slot
-  SCompBlock* pBlock = &pCheckInfo->pCompInfo->blocks[cur->slot];
-  return loadFileDataBlock(pQueryHandle, pBlock, pCheckInfo);
-}
-
-static UNUSED_FUNC bool hasMoreDataForSingleTable(STsdbQueryHandle* pHandle) {
-  assert(pHandle->activeIndex == 0 && taosArrayGetSize(pHandle->pTableCheckInfo) == 1);
-
-  STsdbFileH*      pFileHandle = tsdbGetFile(pHandle->pTsdb);
-  STableCheckInfo* pCheckInfo = taosArrayGet(pHandle->pTableCheckInfo, pHandle->activeIndex);
-
-  if (!pCheckInfo->checkFirstFileBlock) {
-    pCheckInfo->checkFirstFileBlock = true;
-
-    if (pFileHandle != NULL) {
-      bool found = getQualifiedDataBlock(pHandle, pCheckInfo, 1);
-      if (found) {
-        return true;
-      }
-    }
-
-    // no data in file, try cache
-    pHandle->cur.fid = -1;
-    return hasMoreDataInCache(pHandle);
-  } else {  // move to next data block in file or in cache
-    return moveToNextBlock(pHandle, 1);
-  }
-}
+//static bool getQualifiedDataBlock(STsdbQueryHandle* pQueryHandle, STableCheckInfo* pCheckInfo, int32_t type) {
+//  STsdbFileH* pFileHandle = tsdbGetFile(pQueryHandle->pTsdb);
+//  int32_t     fid = getFileIdFromKey(pCheckInfo->lastKey);
+//
+//  tsdbInitFileGroupIter(pFileHandle, &pQueryHandle->fileIter, TSDB_FGROUP_ITER_FORWARD);
+//  tsdbSeekFileGroupIter(&pQueryHandle->fileIter, fid);
+//  pQueryHandle->pFileGroup = tsdbGetFileGroupNext(&pQueryHandle->fileIter);
+//
+//  SQueryFilePos* cur = &pQueryHandle->cur;
+//
+//  int32_t tid = pCheckInfo->tableId.tid;
+//  int32_t numOfBlocks = 0;
+//
+//  while (pQueryHandle->pFileGroup != NULL) {
+//    if (getFileCompInfo(pQueryHandle, &numOfBlocks, 1) != TSDB_CODE_SUCCESS) {
+//      break;
+//    }
+//
+//    assert(pCheckInfo->numOfBlocks >= 0);
+//
+//    // no data block in current file, try next
+//    if (pCheckInfo->numOfBlocks > 0) {
+//      cur->fid = pQueryHandle->pFileGroup->fileId;
+//      break;
+//    }
+//
+//    dTrace("%p no data block in file, fid:%d, tid:%d, try next, %p", pQueryHandle, pQueryHandle->pFileGroup->fileId,
+//           tid, pQueryHandle->qinfo);
+//
+//    pQueryHandle->pFileGroup = tsdbGetFileGroupNext(&pQueryHandle->fileIter);
+//  }
+//
+//  if (pCheckInfo->numOfBlocks == 0) {
+//    return false;
+//  }
+//
+//  cur->slot = 0;  // always start from the first slot
+//  SCompBlock* pBlock = &pCheckInfo->pCompInfo->blocks[cur->slot];
+//  return loadFileDataBlock(pQueryHandle, pBlock, pCheckInfo);
+//}
 
-typedef struct SBlockOrderSupporter {
-  int32_t             numOfTables;
-  STableBlockInfo** pDataBlockInfo;
-  int32_t*            blockIndexArray;
-  int32_t*            numOfBlocksPerMeter;
-} SBlockOrderSupporter;
+//static UNUSED_FUNC bool hasMoreDataForSingleTable(STsdbQueryHandle* pHandle) {
+//  assert(pHandle->activeIndex == 0 && taosArrayGetSize(pHandle->pTableCheckInfo) == 1);
+//
+//  STsdbFileH*      pFileHandle = tsdbGetFile(pHandle->pTsdb);
+//  STableCheckInfo* pCheckInfo = taosArrayGet(pHandle->pTableCheckInfo, pHandle->activeIndex);
+//
+//  if (!pCheckInfo->checkFirstFileBlock) {
+//    pCheckInfo->checkFirstFileBlock = true;
+//
+//    if (pFileHandle != NULL) {
+//      bool found = getQualifiedDataBlock(pHandle, pCheckInfo, 1);
+//      if (found) {
+//        return true;
+//      }
+//    }
+//
+//    // no data in file, try cache
+//    pHandle->cur.fid = -1;
+//    return hasMoreDataInCache(pHandle);
+//  } else {  // move to next data block in file or in cache
+//    return moveToNextBlock(pHandle, 1);
+//  }
+//}
 
-void cleanBlockOrderSupporter(SBlockOrderSupporter* pSupporter, int32_t numOfTables) {
+static void cleanBlockOrderSupporter(SBlockOrderSupporter* pSupporter, int32_t numOfTables) {
   tfree(pSupporter->numOfBlocksPerMeter);
   tfree(pSupporter->blockIndexArray);
 
@@ -815,7 +810,7 @@ static int32_t dataBlockOrderCompar(const void* pLeft, const void* pRight, void*
   return pLeftBlockInfoEx->pBlock.compBlock->offset > pRightBlockInfoEx->pBlock.compBlock->offset ? 1 : -1;
 }
 
-int32_t createDataBlocksInfo(STsdbQueryHandle* pQueryHandle, int32_t numOfBlocks, int32_t* numOfAllocBlocks) {
+static int32_t createDataBlocksInfo(STsdbQueryHandle* pQueryHandle, int32_t numOfBlocks, int32_t* numOfAllocBlocks) {
   char* tmp = realloc(pQueryHandle->pDataBlockInfo, sizeof(STableBlockInfo) * numOfBlocks);
   if (tmp == NULL) {
     return TSDB_CODE_SERV_OUT_OF_MEMORY;
@@ -912,23 +907,12 @@ int32_t createDataBlocksInfo(STsdbQueryHandle* pQueryHandle, int32_t numOfBlocks
   return TSDB_CODE_SUCCESS;
 }
 
-static bool getDataBlocksInFiles(STsdbQueryHandle* pQueryHandle) {
-  STsdbFileH*    pFileHandle = tsdbGetFile(pQueryHandle->pTsdb);
+// todo opt for only one table case
+static bool getDataBlocksInFilesImpl(STsdbQueryHandle* pQueryHandle) {
+  pQueryHandle->numOfBlocks = 0;
   SQueryFilePos* cur = &pQueryHandle->cur;
   
-  // find the start data block in file
-  if (!pQueryHandle->locateStart) {
-    pQueryHandle->locateStart = true;
-
-    int32_t fid = getFileIdFromKey(pQueryHandle->window.skey);
-    
-    tsdbInitFileGroupIter(pFileHandle, &pQueryHandle->fileIter, pQueryHandle->order);
-    tsdbSeekFileGroupIter(&pQueryHandle->fileIter, fid);
-
-    int32_t numOfBlocks = -1;
-    
-    // todo opt for only one table case
-    pQueryHandle->numOfBlocks = 0;
+  int32_t numOfBlocks = 0;
   int32_t numOfTables = taosArrayGetSize(pQueryHandle->pTableCheckInfo);
   
   while ((pQueryHandle->pFileGroup = tsdbGetFileGroupNext(&pQueryHandle->fileIter)) != NULL) {
@@ -968,49 +952,27 @@ static bool getDataBlocksInFiles(STsdbQueryHandle* pQueryHandle) {
   SCompBlock*      pBlock = pBlockInfo->pBlock.compBlock;
   
   return loadFileDataBlock(pQueryHandle, pBlock, pCheckInfo);
-  } else {
-    if ((cur->slot == pQueryHandle->numOfBlocks - 1 && QUERY_IS_ASC_QUERY(pQueryHandle->order)) ||
-        (cur->slot == 0 && !QUERY_IS_ASC_QUERY(pQueryHandle->order))) { // all blocks
-      int32_t numOfBlocks = -1;
-      
-      int32_t numOfTables = taosArrayGetSize(pQueryHandle->pTableCheckInfo);
-      pQueryHandle->numOfBlocks = 0;
-      
-      while ((pQueryHandle->pFileGroup = tsdbGetFileGroupNext(&pQueryHandle->fileIter)) != NULL) {
-        if (getFileCompInfo(pQueryHandle, &numOfBlocks, 1) != TSDB_CODE_SUCCESS) {
-          break;
-        }
-
-        assert(numOfBlocks >= 0);
-        dTrace("%p %d blocks found in file for %d table(s), fid:%d", pQueryHandle, numOfBlocks, numOfTables,
-               pQueryHandle->pFileGroup->fileId);
+}
 
-        // todo return error code to query engine
-        if (createDataBlocksInfo(pQueryHandle, numOfBlocks, &pQueryHandle->numOfBlocks) != TSDB_CODE_SUCCESS) {
-          break;
-        }
+static bool getDataBlocksInFiles(STsdbQueryHandle* pQueryHandle) {
+  STsdbFileH*    pFileHandle = tsdbGetFile(pQueryHandle->pTsdb);
+  SQueryFilePos* cur = &pQueryHandle->cur;
 
-        assert(numOfBlocks >= pQueryHandle->numOfBlocks);
-        if (pQueryHandle->numOfBlocks > 0) {
-          break;
-        }
-      }
+  // find the start data block in file
+  if (!pQueryHandle->locateStart) {
+    pQueryHandle->locateStart = true;
 
-      // no data in file anymore
-      if (pQueryHandle->numOfBlocks <= 0) {
-        assert(pQueryHandle->pFileGroup == NULL);
-        cur->fid = -1;
-        return false;
-      }
+    int32_t fid = getFileIdFromKey(pQueryHandle->window.skey);
     
-      cur->slot = QUERY_IS_ASC_QUERY(pQueryHandle->order)? 0:pQueryHandle->numOfBlocks-1;
-      cur->fid = pQueryHandle->pFileGroup->fileId;
+    tsdbInitFileGroupIter(pFileHandle, &pQueryHandle->fileIter, pQueryHandle->order);
+    tsdbSeekFileGroupIter(&pQueryHandle->fileIter, fid);
 
-      STableBlockInfo* pBlockInfo = &pQueryHandle->pDataBlockInfo[cur->slot];
-      STableCheckInfo* pCheckInfo = pBlockInfo->pTableCheckInfo;
-      SCompBlock*      pBlock = pBlockInfo->pBlock.compBlock;
+    return getDataBlocksInFilesImpl(pQueryHandle);
+  } else {
+    if ((cur->slot == pQueryHandle->numOfBlocks - 1 && QUERY_IS_ASC_QUERY(pQueryHandle->order)) ||
+        (cur->slot == 0 && !QUERY_IS_ASC_QUERY(pQueryHandle->order))) { // all blocks
       
-      return loadFileDataBlock(pQueryHandle, pBlock, pCheckInfo);
+      return getDataBlocksInFilesImpl(pQueryHandle);
     } else {  // next block of the same file
       int32_t step = QUERY_IS_ASC_QUERY(pQueryHandle->order)? 1:-1;
       cur->slot += step;
@@ -1027,11 +989,9 @@ static bool getDataBlocksInFiles(STsdbQueryHandle* pQueryHandle) {
   }
 }
 
-
 static bool doHasDataInBuffer(STsdbQueryHandle* pQueryHandle) {
   size_t numOfTables = taosArrayGetSize(pQueryHandle->pTableCheckInfo);
   // todo add assert, the value of numOfTables should be less than the maximum value for each vnode capacity
-  assert(numOfTables > 0);
   
   while (pQueryHandle->activeIndex < numOfTables) {
     if (hasMoreDataInCache(pQueryHandle)) {
@@ -1259,7 +1219,7 @@ static void convertQueryResult(SArray* pRes, SArray* pTableList) {
   }
 }
 
-void destroyHelper(void* param) {
+static void destroyHelper(void* param) {
   if (param == NULL) {
     return;
   }
@@ -1269,86 +1229,6 @@ void destroyHelper(void* param) {
   free(param);
 }
 
-static UNUSED_FUNC int32_t compareStrPatternComp(const void* pLeft, const void* pRight) {
-  SPatternCompareInfo pInfo = {'%', '_'};
-
-  const char* pattern = pRight;
-  const char* str = pLeft;
-
-  int32_t ret = patternMatch(pattern, str, strlen(str), &pInfo);
-
-  return (ret == TSDB_PATTERN_MATCH) ? 0 : 1;
-}
-
-static UNUSED_FUNC int32_t compareWStrPatternComp(const void* pLeft, const void* pRight) {
-  SPatternCompareInfo pInfo = {'%', '_'};
-
-  const wchar_t* pattern = pRight;
-  const wchar_t* str = pLeft;
-
-  int32_t ret = WCSPatternMatch(pattern, str, wcslen(str), &pInfo);
-
-  return (ret == TSDB_PATTERN_MATCH) ? 0 : 1;
-}
-
-// static __compar_fn_t getFilterComparator(int32_t type, int32_t filterType, int32_t optr) {
-//  __compar_fn_t comparator = NULL;
-//
-//  switch (type) {
-//    case TSDB_DATA_TYPE_TINYINT:
-//    case TSDB_DATA_TYPE_SMALLINT:
-//    case TSDB_DATA_TYPE_INT:
-//    case TSDB_DATA_TYPE_BIGINT:
-//    case TSDB_DATA_TYPE_BOOL: {
-//      if (filterType >= TSDB_DATA_TYPE_BOOL && filterType <= TSDB_DATA_TYPE_BIGINT) {
-//        comparator = compareIntVal;
-//      } else if (filterType >= TSDB_DATA_TYPE_FLOAT && filterType <= TSDB_DATA_TYPE_DOUBLE) {
-//        comparator = compareIntDoubleVal;
-//      }
-//      break;
-//    }
-//
-//    case TSDB_DATA_TYPE_FLOAT:
-//    case TSDB_DATA_TYPE_DOUBLE: {
-//      if (filterType >= TSDB_DATA_TYPE_BOOL && filterType <= TSDB_DATA_TYPE_BIGINT) {
-//        comparator = compareDoubleIntVal;
-//      } else if (filterType >= TSDB_DATA_TYPE_FLOAT && filterType <= TSDB_DATA_TYPE_DOUBLE) {
-//        comparator = compareDoubleVal;
-//      }
-//      break;
-//    }
-//
-//    case TSDB_DATA_TYPE_BINARY: {
-//      assert(filterType == TSDB_DATA_TYPE_BINARY);
-//
-//      if (optr == TSDB_RELATION_LIKE) { /* wildcard query using like operator */
-//        comparator = compareStrPatternComp;
-//      } else { /* normal relational comparator */
-//        comparator = compareStrVal;
-//      }
-//
-//      break;
-//    }
-//
-//    case TSDB_DATA_TYPE_NCHAR: {
-//      assert(filterType == TSDB_DATA_TYPE_NCHAR);
-//
-//      if (optr == TSDB_RELATION_LIKE) {
-//        comparator = compareWStrPatternComp;
-//      } else {
-//        comparator = compareWStrVal;
-//      }
-//
-//      break;
-//    }
-//    default:
-//      comparator = compareIntVal;
-//      break;
-//  }
-//
-//  return comparator;
-//}
-
 static void getTagColumnInfo(SExprTreeSupporter* pSupporter, SSchema* pSchema, int32_t* index, int32_t* offset) {
   *index = 0;
   *offset = 0;