diff --git a/include/common/common.h b/include/common/common.h
index 9b8a4654428eb19efdc727e228eff401fac848ed..0299a29eb4fc1cad9c6b1e5f8a594289e75d6346 100644
--- a/include/common/common.h
+++ b/include/common/common.h
@@ -80,6 +80,80 @@ typedef struct SColumnInfoData {
   char       *pData;    // the corresponding block data in memory
 } SColumnInfoData;
 
+static FORCE_INLINE int32_t tEncodeDataBlock(void** buf, const SSDataBlock* pBlock) {
+  int64_t tbUid = pBlock->info.uid;
+  int32_t numOfCols = pBlock->info.numOfCols;
+  int32_t rows = pBlock->info.rows;
+  int32_t sz = taosArrayGetSize(pBlock->pDataBlock);
+
+  int32_t tlen = 0;
+  tlen += taosEncodeFixedI64(buf, tbUid);
+  tlen += taosEncodeFixedI32(buf, numOfCols);
+  tlen += taosEncodeFixedI32(buf, rows);
+  tlen += taosEncodeFixedI32(buf, sz);
+  for (int32_t i = 0; i < sz; i++) {
+    SColumnInfoData* pColData = (SColumnInfoData*)taosArrayGet(pBlock->pDataBlock, i);
+    tlen += taosEncodeFixedI16(buf, pColData->info.colId);
+    tlen += taosEncodeFixedI16(buf, pColData->info.type);
+    tlen += taosEncodeFixedI16(buf, pColData->info.bytes);
+    int32_t colSz = rows * pColData->info.bytes;
+    tlen += taosEncodeBinary(buf, pColData->pData, colSz);
+  }
+  return tlen;
+}
+
+static FORCE_INLINE void* tDecodeDataBlock(void* buf, SSDataBlock* pBlock) {
+  int32_t sz;
+
+  buf = taosDecodeFixedI64(buf, &pBlock->info.uid);
+  buf = taosDecodeFixedI32(buf, &pBlock->info.numOfCols);
+  buf = taosDecodeFixedI32(buf, &pBlock->info.rows);
+  buf = taosDecodeFixedI32(buf, &sz);
+  pBlock->pDataBlock = taosArrayInit(sz, sizeof(SColumnInfoData));
+  for (int32_t i = 0; i < sz; i++) {
+    SColumnInfoData data;
+    buf = taosDecodeFixedI16(buf, &data.info.colId);
+    buf = taosDecodeFixedI16(buf, &data.info.type);
+    buf = taosDecodeFixedI16(buf, &data.info.bytes);
+    int32_t colSz = pBlock->info.rows * data.info.bytes;
+    buf = taosDecodeBinary(buf, (void**)&data.pData, colSz);
+    taosArrayPush(pBlock->pDataBlock, &data);
+  }
+  return buf;
+}
+
+static FORCE_INLINE int32_t tEncodeSMqConsumeRsp(void** buf, const SMqConsumeRsp* pRsp) {
+  int32_t tlen = 0;
+  int32_t sz = 0;
+  tlen += taosEncodeFixedI64(buf, pRsp->consumerId);
+  tlen += tEncodeSSchemaWrapper(buf, pRsp->schemas);
+  if (pRsp->pBlockData) {
+    sz = taosArrayGetSize(pRsp->pBlockData);
+  }
+  tlen += taosEncodeFixedI32(buf, sz);
+  for (int32_t i = 0; i < sz; i++) {
+    SSDataBlock* pBlock = (SSDataBlock*) taosArrayGet(pRsp->pBlockData, i);
+    tlen += tEncodeDataBlock(buf, pBlock);
+  }
+  return tlen;
+}
+
+static FORCE_INLINE void* tDecodeSMqConsumeRsp(void* buf, SMqConsumeRsp* pRsp) {
+  int32_t sz;
+  buf = taosDecodeFixedI64(buf, &pRsp->consumerId);
+  pRsp->schemas = (SSchemaWrapper*)calloc(1, sizeof(SSchemaWrapper));
+  if (pRsp->schemas == NULL) return NULL;
+  buf = tDecodeSSchemaWrapper(buf, pRsp->schemas);
+  buf = taosDecodeFixedI32(buf, &sz);
+  pRsp->pBlockData = taosArrayInit(sz, sizeof(SSDataBlock));
+  for (int32_t i = 0; i < sz; i++) {
+    SSDataBlock block;
+    tDecodeDataBlock(buf, &block);
+    taosArrayPush(pRsp->pBlockData, &block);
+  }
+  return buf;
+}
+
 //======================================================================================================================
 // the following structure shared by parser and executor
 typedef struct SColumn {
diff --git a/include/common/tmsg.h b/include/common/tmsg.h
index ef5a854d20333ecf8a05ef50e44bf62c59eb440d..289f2143ab39be6e0a646d05fa30f10d34d0fbae 100644
--- a/include/common/tmsg.h
+++ b/include/common/tmsg.h
@@ -1592,16 +1592,53 @@ typedef struct SMqSetCVgRsp {
   char     cGroup[TSDB_CONSUMER_GROUP_LEN];
 } SMqSetCVgRsp;
 
-typedef struct SMqColData {
-  int16_t colId;
-  int16_t type;
-  int16_t bytes;
-} SMqColMeta;
+typedef struct {
+  uint32_t nCols;
+  SSchema *pSchema;
+} SSchemaWrapper;
+
+static FORCE_INLINE int32_t tEncodeSSchema(void** buf, const SSchema* pSchema) {
+  int32_t tlen = 0;
+  tlen += taosEncodeFixedI8(buf, pSchema->type);
+  tlen += taosEncodeFixedI32(buf, pSchema->bytes);
+  tlen += taosEncodeFixedI32(buf, pSchema->colId);
+  tlen += taosEncodeString(buf, pSchema->name);
+  return tlen;
+}
+
+static FORCE_INLINE void* tDecodeSSchema(void* buf, SSchema* pSchema) {
+  buf = taosDecodeFixedI8(buf, &pSchema->type);
+  buf = taosDecodeFixedI32(buf, &pSchema->bytes);
+  buf = taosDecodeFixedI32(buf, &pSchema->colId);
+  buf = taosDecodeStringTo(buf, pSchema->name);
+  return buf;
+}
+
+static FORCE_INLINE int32_t tEncodeSSchemaWrapper(void** buf, const SSchemaWrapper* pSW) {
+  int32_t tlen = 0;
+  tlen += taosEncodeFixedU32(buf, pSW->nCols);
+  for (int32_t i = 0; i < pSW->nCols; i ++) {
+    tlen += tEncodeSSchema(buf, &pSW->pSchema[i]);
+  }
+  return tlen;
+}
+
+static FORCE_INLINE void* tDecodeSSchemaWrapper(void* buf, SSchemaWrapper* pSW) {
+  buf = taosDecodeFixedU32(buf, &pSW->nCols);
+  pSW->pSchema = (SSchema*) calloc(pSW->nCols, sizeof(SSchema));
+  if (pSW->pSchema == NULL) {
+    return NULL;
+  }
+  for (int32_t i = 0; i < pSW->nCols; i ++) {
+    buf = tDecodeSSchema(buf, &pSW->pSchema[i]);
+  }
+  return buf;
+}
 
 typedef struct SMqTbData {
   int64_t    uid;
   int32_t    numOfRows;
-  char       colData[];
+  char*      colData;
 } SMqTbData;
 
 typedef struct SMqTopicBlk {
@@ -1616,18 +1653,12 @@ typedef struct SMqTopicBlk {
 } SMqTopicData;
 
 typedef struct SMqConsumeRsp {
-  int64_t       consumerId;
-  int32_t       numOfCols;
-  SMqColMeta*   meta;
-  int32_t       numOfTopics;
-  SMqTopicData* data;
+  int64_t         consumerId;
+  SSchemaWrapper* schemas;
+  int32_t         numOfTopics;
+  SArray*         pBlockData;   //SArray<SSDataBlock>
 } SMqConsumeRsp;
 
-static FORCE_INLINE int32_t tEncodeSMqConsumeRsp(void** buf, const SMqConsumeRsp* pRsp) {
-  int32_t tlen = 0;
-  return tlen;
-}
-
 // one req for one vg+topic
 typedef struct SMqConsumeReq {
   SMsgHead       head;
diff --git a/source/client/src/clientImpl.c b/source/client/src/clientImpl.c
index df086463dbd98848493b212b0c4070dd515f6122..afac8acc7a4f11244e4f7dae84253b523c9c18e1 100644
--- a/source/client/src/clientImpl.c
+++ b/source/client/src/clientImpl.c
@@ -119,7 +119,7 @@ TAOS *taos_connect_internal(const char *ip, const char *user, const char *pass,
     SAppInstInfo* p = calloc(1, sizeof(struct SAppInstInfo));
     p->mgmtEp       = epSet;
     p->pTransporter = openTransporter(user, secretEncrypt, tsNumOfCores);
-    p->pAppHbMgr = appHbMgrInit(p);
+    /*p->pAppHbMgr = appHbMgrInit(p);*/
     taosHashPut(appInfo.pInstMap, key, strlen(key), &p, POINTER_BYTES);
 
     pInst = &p;
@@ -621,6 +621,27 @@ struct tmq_message_t {
 };
 
 int32_t tmq_poll_cb_inner(void* param, const SDataBuf* pMsg, int32_t code) {
+  SMqConsumeRsp rsp;
+  tDecodeSMqConsumeRsp(pMsg->pData, &rsp);
+  int32_t colNum = rsp.schemas->nCols;
+  for (int32_t i = 0; i < colNum; i++) {
+    printf("| %s |", rsp.schemas->pSchema[i].name);
+  }
+  printf("\n");
+  int32_t sz = taosArrayGetSize(rsp.pBlockData);
+  for (int32_t i = 0; i < sz; i++) {
+    SSDataBlock* pDataBlock = taosArrayGet(rsp.pBlockData, i);
+    int32_t rows = pDataBlock->info.rows;
+    for (int32_t j = 0; j < colNum; j++) {
+      SColumnInfoData* pColInfoData = taosArrayGet(pDataBlock->pDataBlock, j);
+      for (int32_t k = 0; k < rows; k++) {
+        void* var = POINTER_SHIFT(pColInfoData->pData, k * pColInfoData->info.bytes);
+        if (j == 0) printf(" %ld ", *(int64_t*)var);
+        if (j == 1) printf(" %d ", *(int32_t*)var);
+      }
+    }
+    /*pDataBlock->*/
+  }
   return 0;
 }
 
@@ -721,9 +742,9 @@ tmq_message_t* tmq_consume_poll(tmq_t* tmq, int64_t blocking_time) {
   pRequest->body.requestMsg = (SDataBuf){ .pData = pReq, .len = sizeof(SMqConsumeReq) };
 
   SMsgSendInfo* sendInfo = buildMsgInfoImpl(pRequest);
-  /*sendInfo->requestObjRefId = 0;*/
+  sendInfo->requestObjRefId = 0;
   /*sendInfo->param = &tmq_message;*/
-  /*sendInfo->fp = tmq_poll_cb_inner;*/
+  sendInfo->fp = tmq_poll_cb_inner;
 
   int64_t transporterId = 0;
   asyncSendMsgToServer(tmq->pTscObj->pAppInfo->pTransporter, &pVg->epSet, &transporterId, sendInfo);
diff --git a/source/client/src/clientMsgHandler.c b/source/client/src/clientMsgHandler.c
index ec088eb0735824f3348287ec54fd476f00dc7adb..1e056293bec87b7c20e7f9f855d6479bb0318d44 100644
--- a/source/client/src/clientMsgHandler.c
+++ b/source/client/src/clientMsgHandler.c
@@ -71,8 +71,8 @@ int processConnectRsp(void* param, const SDataBuf* pMsg, int32_t code) {
   pTscObj->pAppInfo->clusterId = pConnect->clusterId;
   atomic_add_fetch_64(&pTscObj->pAppInfo->numOfConns, 1);
 
-  SClientHbKey connKey = {.connId = pConnect->connId, .hbType = HEARTBEAT_TYPE_QUERY};
-  hbRegisterConn(pTscObj->pAppInfo->pAppHbMgr, connKey, NULL);
+  /*SClientHbKey connKey = {.connId = pConnect->connId, .hbType = HEARTBEAT_TYPE_QUERY};*/
+  /*hbRegisterConn(pTscObj->pAppInfo->pAppHbMgr, connKey, NULL);*/
 
   //  pRequest->body.resInfo.pRspMsg = pMsg->pData;
   tscDebug("0x%" PRIx64 " clusterId:%" PRId64 ", totalConn:%" PRId64, pRequest->requestId, pConnect->clusterId,
diff --git a/source/dnode/vnode/inc/meta.h b/source/dnode/vnode/inc/meta.h
index 383073871e6eb46e75d1a0dfe48c09fc50e14cad..44a352ec54966af9a1cb13c767cc8a23988395c6 100644
--- a/source/dnode/vnode/inc/meta.h
+++ b/source/dnode/vnode/inc/meta.h
@@ -37,11 +37,6 @@ typedef struct SMetaCfg {
   uint64_t lruSize;
 } SMetaCfg;
 
-typedef struct {
-  uint32_t nCols;
-  SSchema *pSchema;
-} SSchemaWrapper;
-
 typedef struct SMTbCursor  SMTbCursor;
 typedef struct SMCtbCursor SMCtbCursor;
 
diff --git a/source/dnode/vnode/inc/tq.h b/source/dnode/vnode/inc/tq.h
index 3a1e5b9c95737304d3460b0d173a8d6a6123fdf6..faaf769e1ab16931eb4944b51ea7e791a26a226b 100644
--- a/source/dnode/vnode/inc/tq.h
+++ b/source/dnode/vnode/inc/tq.h
@@ -149,11 +149,12 @@ typedef struct STqGroup {
 } STqGroup;
 
 typedef struct STqTaskItem {
-  int8_t        status;
-  int64_t       offset;
-  void*         dst;
-  qTaskInfo_t   task;
-  SSubQueryMsg* pQueryMsg;
+  int8_t         status;
+  int64_t        offset;
+  void*          dst;
+  qTaskInfo_t    task;
+  STqReadHandle* pReadHandle;
+  SSubQueryMsg*  pQueryMsg;
 } STqTaskItem;
 
 // new version
diff --git a/source/dnode/vnode/inc/vnode.h b/source/dnode/vnode/inc/vnode.h
index b56c5b30fa4fc3ce8584bdb2273a134f177420c2..c8b47bf4a6b8635d2c494ea4aa8fd6622f5e264d 100644
--- a/source/dnode/vnode/inc/vnode.h
+++ b/source/dnode/vnode/inc/vnode.h
@@ -69,14 +69,17 @@ typedef struct {
 } SVnodeOpt;
 
 typedef struct STqReadHandle {
-  int64_t        ver;
-  uint64_t       tbUid;
-  SSubmitMsg*    pMsg;
-  SSubmitBlk*    pBlock;
-  SSubmitMsgIter msgIter;
-  SSubmitBlkIter blkIter;
-  SMeta*         pMeta;
-  SArray*        pColIdList;
+  int64_t         ver;
+  uint64_t        tbUid;
+  SSubmitMsg*     pMsg;
+  SSubmitBlk*     pBlock;
+  SSubmitMsgIter  msgIter;
+  SSubmitBlkIter  blkIter;
+  SMeta*          pVnodeMeta;
+  SArray*         pColIdList; //SArray<int32_t>
+  int32_t         sver;
+  SSchemaWrapper* pSchemaWrapper;
+  STSchema*       pSchema;
 } STqReadHandle;
 
 /* ------------------------ SVnode ------------------------ */
diff --git a/source/dnode/vnode/src/tq/tq.c b/source/dnode/vnode/src/tq/tq.c
index e953d595272aac25187fb873c0860a37c0d67d2a..3195691a13ad4295a412f3ebb6ca40267419e1e9 100644
--- a/source/dnode/vnode/src/tq/tq.c
+++ b/source/dnode/vnode/src/tq/tq.c
@@ -13,9 +13,9 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include "tcompare.h"
 #include "tqInt.h"
 #include "tqMetaStore.h"
-#include "tcompare.h"
 
 // static
 // read next version data
@@ -484,7 +484,8 @@ int tqConsume(STQ* pTq, STqConsumeReq* pMsg) {
 
 int tqSerializeConsumer(const STqConsumerHandle* pConsumer, STqSerializedHead** ppHead) {
   int32_t num = taosArrayGetSize(pConsumer->topics);
-  int32_t sz = sizeof(STqSerializedHead) + sizeof(int64_t) * 2 + TSDB_TOPIC_FNAME_LEN + num * (sizeof(int64_t) + TSDB_TOPIC_FNAME_LEN);
+  int32_t sz = sizeof(STqSerializedHead) + sizeof(int64_t) * 2 + TSDB_TOPIC_FNAME_LEN +
+               num * (sizeof(int64_t) + TSDB_TOPIC_FNAME_LEN);
   if (sz > (*ppHead)->ssize) {
     void* tmpPtr = realloc(*ppHead, sz);
     if (tmpPtr == NULL) {
@@ -511,13 +512,13 @@ int tqSerializeConsumer(const STqConsumerHandle* pConsumer, STqSerializedHead**
     *(int64_t*)ptr = pTopic->committedOffset;
     POINTER_SHIFT(ptr, sizeof(int64_t));
   }
-  
+
   return 0;
 }
 
 const void* tqDeserializeConsumer(const STqSerializedHead* pHead, STqConsumerHandle** ppConsumer) {
   STqConsumerHandle* pConsumer = *ppConsumer;
-  const void* ptr = pHead->content;
+  const void*        ptr = pHead->content;
   pConsumer->consumerId = *(int64_t*)ptr;
   ptr = POINTER_SHIFT(ptr, sizeof(int64_t));
   pConsumer->epoch = *(int64_t*)ptr;
@@ -668,32 +669,33 @@ int tqItemSSize() {
 #endif
 
 int32_t tqProcessConsumeReq(STQ* pTq, SRpcMsg* pMsg) {
-  SMqConsumeReq*   pReq = pMsg->pCont;
-  SRpcMsg          rpcMsg;
-  int64_t          reqId = pReq->reqId;
-  int64_t          consumerId = pReq->consumerId;
-  int64_t          reqOffset = pReq->offset;
-  int64_t          fetchOffset = reqOffset;
-  int64_t          blockingTime = pReq->blockingTime;
+  SMqConsumeReq* pReq = pMsg->pCont;
+  SRpcMsg        rpcMsg;
+  int64_t        reqId = pReq->reqId;
+  int64_t        consumerId = pReq->consumerId;
+  int64_t        reqOffset = pReq->offset;
+  int64_t        fetchOffset = reqOffset;
+  int64_t        blockingTime = pReq->blockingTime;
 
-  int              rspLen = 0;
+  int           rspLen = 0;
+  SMqConsumeRsp rsp = {.consumerId = consumerId, .numOfTopics = 1, .pBlockData = NULL};
 
   STqConsumerHandle* pConsumer = tqHandleGet(pTq->tqMeta, consumerId);
   ASSERT(pConsumer);
-  int                sz = taosArrayGetSize(pConsumer->topics);
+  int sz = taosArrayGetSize(pConsumer->topics);
 
   for (int i = 0; i < sz; i++) {
     STqTopicHandle* pTopic = taosArrayGet(pConsumer->topics, i);
-    //TODO: support multiple topic in one req
+    // TODO: support multiple topic in one req
     if (strcmp(pTopic->topicName, pReq->topic) != 0) {
       continue;
     }
 
-  if (fetchOffset == -1) {
-    fetchOffset = pTopic->committedOffset + 1;
-  }
-    int8_t pos;
-    int8_t skip = 0;
+    if (fetchOffset == -1) {
+      fetchOffset = pTopic->committedOffset + 1;
+    }
+    int8_t    pos;
+    int8_t    skip = 0;
     SWalHead* pHead;
     while (1) {
       pos = fetchOffset % TQ_BUFFER_SIZE;
@@ -727,7 +729,7 @@ int32_t tqProcessConsumeReq(STQ* pTq, SRpcMsg* pMsg) {
 
     qSetStreamInput(task, pCont);
 
-    //SArray<SSDataBlock>
+    // SArray<SSDataBlock>
     SArray* pRes = taosArrayInit(0, sizeof(SSDataBlock));
     while (1) {
       SSDataBlock* pDataBlock;
@@ -741,6 +743,8 @@ int32_t tqProcessConsumeReq(STQ* pTq, SRpcMsg* pMsg) {
         break;
       }
     }
+    //TODO copy
+    rsp.schemas = pTopic->buffer.output[pos].pReadHandle->pSchemaWrapper;
 
     atomic_store_8(&pTopic->buffer.output[pos].status, 0);
 
@@ -750,6 +754,9 @@ int32_t tqProcessConsumeReq(STQ* pTq, SRpcMsg* pMsg) {
       continue;
     }
 
+    rsp.pBlockData = pRes;
+
+#if 0
     pTopic->buffer.output[pos].dst = pRes;
     if (pTopic->buffer.firstOffset == -1 || pReq->offset < pTopic->buffer.firstOffset) {
       pTopic->buffer.firstOffset = pReq->offset;
@@ -757,13 +764,20 @@ int32_t tqProcessConsumeReq(STQ* pTq, SRpcMsg* pMsg) {
     if (pTopic->buffer.lastOffset == -1 || pReq->offset > pTopic->buffer.lastOffset) {
       pTopic->buffer.lastOffset = pReq->offset;
     }
+#endif
   }
-    // put output into rsp
-  SMqConsumeRsp rsp = {
-    .consumerId = consumerId,
-    .numOfTopics = 1
-  };
-
+  int32_t tlen = tEncodeSMqConsumeRsp(NULL, &rsp);
+  void*   buf = rpcMallocCont(tlen);
+  if (buf == NULL) {
+    pMsg->code = -1;
+    return -1;
+  }
+  void* abuf = buf;
+  tEncodeSMqConsumeRsp(&abuf, &rsp);
+  pMsg->pCont = buf;
+  pMsg->contLen = tlen;
+  pMsg->code = 0;
+  rpcSendResponse(pMsg);
   return 0;
 }
 
@@ -799,6 +813,7 @@ int32_t tqProcessSetConnReq(STQ* pTq, char* msg) {
   for (int i = 0; i < TQ_BUFFER_SIZE; i++) {
     pTopic->buffer.output[i].status = 0;
     STqReadHandle* pReadHandle = tqInitSubmitMsgScanner(pTq->pMeta);
+    pTopic->buffer.output[i].pReadHandle = pReadHandle;
     pTopic->buffer.output[i].task = qCreateStreamExecTaskInfo(req.qmsg, pReadHandle);
   }
   taosArrayPush(pConsumer->topics, pTopic);
@@ -813,10 +828,13 @@ STqReadHandle* tqInitSubmitMsgScanner(SMeta* pMeta) {
   if (pReadHandle == NULL) {
     return NULL;
   }
-  pReadHandle->pMeta = pMeta;
+  pReadHandle->pVnodeMeta = pMeta;
   pReadHandle->pMsg = NULL;
   pReadHandle->ver = -1;
   pReadHandle->pColIdList = NULL;
+  pReadHandle->sver = -1;
+  pReadHandle->pSchema = NULL;
+  pReadHandle->pSchemaWrapper = NULL;
   return pReadHandle;
 }
 
@@ -837,13 +855,13 @@ bool tqNextDataBlock(STqReadHandle* pHandle) {
     if (pHandle->pBlock == NULL) return false;
 
     pHandle->pBlock->uid = htobe64(pHandle->pBlock->uid);
-    if (pHandle->tbUid == pHandle->pBlock->uid){
+    if (pHandle->tbUid == pHandle->pBlock->uid) {
       pHandle->pBlock->tid = htonl(pHandle->pBlock->tid);
       pHandle->pBlock->sversion = htonl(pHandle->pBlock->sversion);
       pHandle->pBlock->dataLen = htonl(pHandle->pBlock->dataLen);
       pHandle->pBlock->schemaLen = htonl(pHandle->pBlock->schemaLen);
       pHandle->pBlock->numOfRows = htons(pHandle->pBlock->numOfRows);
-     return true;
+      return true;
     }
   }
   return false;
@@ -859,41 +877,71 @@ int tqRetrieveDataBlockInfo(STqReadHandle* pHandle, SDataBlockInfo* pBlockInfo)
 }
 
 SArray* tqRetrieveDataBlock(STqReadHandle* pHandle) {
-  int32_t         sversion = pHandle->pBlock->sversion;
-  //TODO : change sversion
-  STSchema*       pTschema = metaGetTbTSchema(pHandle->pMeta, pHandle->pBlock->uid, 0);
-
-  tb_uid_t quid;
-  STbCfg* pTbCfg = metaGetTbInfoByUid(pHandle->pMeta, pHandle->pBlock->uid);
-  if (pTbCfg->type == META_CHILD_TABLE) {
-    quid = pTbCfg->ctbCfg.suid;
-  } else {
-    quid = pHandle->pBlock->uid;
+  /*int32_t         sversion = pHandle->pBlock->sversion;*/
+  // TODO set to real sversion
+  int32_t sversion = 0;
+  if (pHandle->sver != sversion) {
+    pHandle->pSchema = metaGetTbTSchema(pHandle->pVnodeMeta, pHandle->pBlock->uid, sversion);
+
+    tb_uid_t quid;
+    STbCfg*  pTbCfg = metaGetTbInfoByUid(pHandle->pVnodeMeta, pHandle->pBlock->uid);
+    if (pTbCfg->type == META_CHILD_TABLE) {
+      quid = pTbCfg->ctbCfg.suid;
+    } else {
+      quid = pHandle->pBlock->uid;
+    }
+    pHandle->pSchemaWrapper = metaGetTableSchema(pHandle->pVnodeMeta, quid, sversion, true);
+    pHandle->sver = sversion;
   }
 
-  SSchemaWrapper* pSchemaWrapper = metaGetTableSchema(pHandle->pMeta, quid, 0, true);
-  SArray*         pArray = taosArrayInit(pSchemaWrapper->nCols, sizeof(SColumnInfoData));
+  STSchema*       pTschema = pHandle->pSchema;
+  SSchemaWrapper* pSchemaWrapper = pHandle->pSchemaWrapper;
+
+  int32_t numOfRows = pHandle->pBlock->numOfRows;
+  int32_t numOfCols = pHandle->pSchema->numOfCols;
+  int32_t colNumNeed = taosArrayGetSize(pHandle->pColIdList);
+
+  SArray* pArray = taosArrayInit(colNumNeed, sizeof(SColumnInfoData));
   if (pArray == NULL) {
     return NULL;
   }
-  SColumnInfoData colInfo;
-  int             sz = pSchemaWrapper->nCols * pSchemaWrapper->pSchema->bytes;
-  colInfo.pData = malloc(sz);
-  if (colInfo.pData == NULL) {
-    return NULL;
+
+  int j = 0;
+  for (int32_t i = 0; i < colNumNeed; i++) {
+    int32_t colId = *(int32_t*)taosArrayGet(pHandle->pColIdList, i);
+    while (j < pSchemaWrapper->nCols && pSchemaWrapper->pSchema[j].colId < colId) {
+      j++;
+    }
+    SSchema* pColSchema = &pSchemaWrapper->pSchema[j];
+    ASSERT(pColSchema->colId == colId);
+    SColumnInfoData colInfo = {0};
+    int             sz = numOfRows * pColSchema->bytes;
+    colInfo.info.bytes = pColSchema->bytes;
+    colInfo.info.colId = colId;
+    colInfo.info.type = pColSchema->type;
+
+    colInfo.pData = calloc(1, sz);
+    if (colInfo.pData == NULL) {
+      // TODO free
+      taosArrayDestroy(pArray);
+      return NULL;
+    }
+    taosArrayPush(pArray, &colInfo);
   }
 
   SMemRow row;
-  int32_t kvIdx;
+  int32_t kvIdx = 0;
+  tInitSubmitBlkIter(pHandle->pBlock, &pHandle->blkIter);
   while ((row = tGetSubmitBlkNext(&pHandle->blkIter)) != NULL) {
-    for (int i = 0; i < pTschema->numOfCols && kvIdx < pTschema->numOfCols; i++) {
-      // TODO: filter out unused column
-      STColumn* pCol = schemaColAt(pTschema, i);
+    // get all wanted col of that block
+    for (int32_t i = 0; i < colNumNeed; i++) {
+      SColumnInfoData* pColData = taosArrayGet(pArray, i);
+      STColumn*        pCol = schemaColAt(pTschema, i);
+      // TODO
+      ASSERT(pCol->colId == pColData->info.colId);
       void* val = tdGetMemRowDataOfColEx(row, pCol->colId, pCol->type, TD_DATA_ROW_HEAD_SIZE + pCol->offset, &kvIdx);
-      // TODO: handle varlen
-      memcpy(POINTER_SHIFT(colInfo.pData, pCol->offset), val, pCol->bytes);
+      memcpy(pColData->pData, val, pCol->bytes);
     }
   }
-  taosArrayPush(pArray, &colInfo);
   return pArray;
 }
diff --git a/source/libs/executor/src/executorimpl.c b/source/libs/executor/src/executorimpl.c
index 00ce6f0a74322758d9680417ba3029466ecc8045..05da921526580bd5cb69f74499871b4044df6aad 100644
--- a/source/libs/executor/src/executorimpl.c
+++ b/source/libs/executor/src/executorimpl.c
@@ -5070,6 +5070,7 @@ static SSDataBlock* doStreamBlockScan(void* param, bool* newgroup) {
   SStreamBlockScanInfo* pInfo = pOperator->info;
 
   SDataBlockInfo* pBlockInfo = &pInfo->pRes->info;
+  pBlockInfo->rows = 0;
   while (tqNextDataBlock(pInfo->readerHandle)) {
     pTaskInfo->code = tqRetrieveDataBlockInfo(pInfo->readerHandle, pBlockInfo);
     if (pTaskInfo->code != TSDB_CODE_SUCCESS) {