diff --git a/source/dnode/mnode/impl/src/mndShow.c b/source/dnode/mnode/impl/src/mndShow.c
index dff918f135..5c3167dd79 100644
--- a/source/dnode/mnode/impl/src/mndShow.c
+++ b/source/dnode/mnode/impl/src/mndShow.c
@@ -310,6 +310,8 @@ static int32_t mndProcessRetrieveSysTableReq(SNodeMsg *pReq) {
       mError("failed to process show-retrieve req:%p since %s", pShow, terrstr());
       return -1;
     }
+
+    pShow->numOfReads = 0;
   }
 
   ShowRetrieveFp retrieveFp = pMgmt->retrieveFps[pShow->type];
@@ -374,7 +376,7 @@ static int32_t mndProcessRetrieveSysTableReq(SNodeMsg *pReq) {
   pReq->pRsp = pRsp;
   pReq->rspLen = size;
 
-  if (rowsRead == 0 || rowsToRead == 0 || (rowsRead == rowsToRead && pShow->numOfRows == pShow->numOfReads)) {
+  if (rowsRead == 0 || rowsToRead == 0 || (rowsRead < rowsToRead)) {
     pRsp->completed = 1;
     mDebug("show:0x%" PRIx64 ", retrieve completed", pShow->id);
     mndReleaseShowObj((SShowObj*) pShow, true);
diff --git a/source/dnode/mnode/impl/src/mndStb.c b/source/dnode/mnode/impl/src/mndStb.c
index 7799ac7562..02e09252f9 100644
--- a/source/dnode/mnode/impl/src/mndStb.c
+++ b/source/dnode/mnode/impl/src/mndStb.c
@@ -1608,7 +1608,6 @@ static int32_t mndRetrieveStb(SNodeMsg *pReq, SShowObj *pShow, char *data, int32
   SStbObj *pStb = NULL;
   int32_t  cols = 0;
   char    *pWrite;
-  char     prefix[TSDB_DB_FNAME_LEN] = {0};
 
   SDbObj* pDb = NULL;
   if (strlen(pShow->db) > 0) {
diff --git a/source/dnode/vnode/src/tq/tqRead.c b/source/dnode/vnode/src/tq/tqRead.c
index 9c0b0802ab..344b4fa655 100644
--- a/source/dnode/vnode/src/tq/tqRead.c
+++ b/source/dnode/vnode/src/tq/tqRead.c
@@ -167,7 +167,7 @@ SArray* tqRetrieveDataBlock(STqReadHandle* pHandle) {
       if (!tdSTSRowIterNext(&iter, pColData->info.colId, pColData->info.type, &sVal)) {
         break;
       }
-      if (colDataAppend(pColData, curRow, sVal.val, sVal.valType == TD_VTYPE_NULL) < 0) {
+      if (colDataAppend(pColData, curRow, sVal.val, false) < 0) {
         taosArrayDestroyEx(pArray, (void (*)(void*))tDeleteSSDataBlock);
         return NULL;
       }
diff --git a/source/dnode/vnode/src/vnd/vnodeQuery.c b/source/dnode/vnode/src/vnd/vnodeQuery.c
index 598647f797..d377ec2039 100644
--- a/source/dnode/vnode/src/vnd/vnodeQuery.c
+++ b/source/dnode/vnode/src/vnd/vnodeQuery.c
@@ -69,9 +69,9 @@ int vnodeProcessFetchMsg(SVnode *pVnode, SRpcMsg *pMsg, SQueueInfo *pInfo) {
       return tqProcessPollReq(pVnode->pTq, pMsg);
     case TDMT_VND_TASK_PIPE_EXEC:
     case TDMT_VND_TASK_MERGE_EXEC:
-      return tqProcessTaskExec(pVnode->pTq, msgstr, msgLen, pInfo->workerId);
+      return tqProcessTaskExec(pVnode->pTq, msgstr, msgLen, 0);
     case TDMT_VND_STREAM_TRIGGER:
-      return tqProcessStreamTrigger(pVnode->pTq, pMsg->pCont, pMsg->contLen, pInfo->workerId);
+      return tqProcessStreamTrigger(pVnode->pTq, pMsg->pCont, pMsg->contLen, 0);
     case TDMT_VND_QUERY_HEARTBEAT:
       return qWorkerProcessHbMsg(pVnode, pVnode->pQuery, pMsg);
     default:
diff --git a/source/libs/executor/inc/executil.h b/source/libs/executor/inc/executil.h
index bcbfeb7015..5d5e0cae88 100644
--- a/source/libs/executor/inc/executil.h
+++ b/source/libs/executor/inc/executil.h
@@ -156,6 +156,8 @@ SArray* interResFromBinary(const char* data, int32_t len);
 void freeInterResult(void* param);
 
 void    initGroupResInfo(SGroupResInfo* pGroupResInfo, SResultRowInfo* pResultInfo);
+void    initMultiResInfoFromArrayList(SGroupResInfo* pGroupResInfo, SArray* pArrayList);
+
 void    cleanupGroupResInfo(SGroupResInfo* pGroupResInfo);
 bool    hasRemainDataInCurrentGroup(SGroupResInfo* pGroupResInfo);
 bool    hasRemainData(SGroupResInfo* pGroupResInfo);
diff --git a/source/libs/executor/inc/executorimpl.h b/source/libs/executor/inc/executorimpl.h
index 1d7023930d..ce0069fdfa 100644
--- a/source/libs/executor/inc/executorimpl.h
+++ b/source/libs/executor/inc/executorimpl.h
@@ -422,6 +422,7 @@ typedef struct SStreamBlockScanInfo {
   uint64_t     numOfRows;     // total scanned rows
   uint64_t     numOfExec;     // execution times
   void*        readerHandle;  // stream block reader handle
+  SArray*      pColMatchInfo; //
 } SStreamBlockScanInfo;
 
 typedef struct SSysTableScanInfo {
diff --git a/source/libs/executor/src/executil.c b/source/libs/executor/src/executil.c
index 2c6468a13f..93fbfe43ce 100644
--- a/source/libs/executor/src/executil.c
+++ b/source/libs/executor/src/executil.c
@@ -222,6 +222,16 @@ void initGroupResInfo(SGroupResInfo* pGroupResInfo, SResultRowInfo* pResultInfo)
   assert(pGroupResInfo->index <= getNumOfTotalRes(pGroupResInfo));
 }
 
+void initMultiResInfoFromArrayList(SGroupResInfo* pGroupResInfo, SArray* pArrayList) {
+  if (pGroupResInfo->pRows != NULL) {
+    taosArrayDestroy(pGroupResInfo->pRows);
+  }
+
+  pGroupResInfo->pRows = pArrayList;
+  pGroupResInfo->index = 0;
+  ASSERT(pGroupResInfo->index <= getNumOfTotalRes(pGroupResInfo));
+}
+
 bool hasRemainDataInCurrentGroup(SGroupResInfo* pGroupResInfo) {
   if (pGroupResInfo->pRows == NULL) {
     return false;
diff --git a/source/libs/executor/src/executorimpl.c b/source/libs/executor/src/executorimpl.c
index 2df18f135c..6265fe6123 100644
--- a/source/libs/executor/src/executorimpl.c
+++ b/source/libs/executor/src/executorimpl.c
@@ -352,7 +352,7 @@ SSDataBlock* createOutputBuf_rv1(SDataBlockDescNode* pNode) {
       continue;
     }
 
-    idata.info.type = pDescNode->dataType.type;
+    idata.info.type  = pDescNode->dataType.type;
     idata.info.bytes = pDescNode->dataType.bytes;
     idata.info.scale = pDescNode->dataType.scale;
     idata.info.slotId = pDescNode->slotId;
@@ -1551,8 +1551,8 @@ static SArray* hashIntervalAgg(SOperatorInfo* pOperatorInfo, SResultRowInfo* pRe
   if (pSDataBlock->pDataBlock != NULL) {
     SColumnInfoData* pColDataInfo = taosArrayGet(pSDataBlock->pDataBlock, 0);
     tsCols = (int64_t*)pColDataInfo->pData;
-    assert(tsCols[0] == pSDataBlock->info.window.skey &&
-           tsCols[pSDataBlock->info.rows - 1] == pSDataBlock->info.window.ekey);
+//    assert(tsCols[0] == pSDataBlock->info.window.skey &&
+//           tsCols[pSDataBlock->info.rows - 1] == pSDataBlock->info.window.ekey);
   }
 
   int32_t startPos = ascScan? 0 : (pSDataBlock->info.rows - 1);
@@ -3660,6 +3660,7 @@ void finalizeUpdatedResult(SqlFunctionCtx* pCtx, int32_t numOfOutput, SDiskbased
 
       if (pCtx[j].fpSet.process) {  // TODO set the dummy function.
         pCtx[j].fpSet.finalize(&pCtx[j]);
+        pResInfo->initialized = true;
       }
 
       if (pRow->numOfRows < pResInfo->numOfRes) {
@@ -3778,10 +3779,6 @@ void setResultRowOutputBufInitCtx_rv(SDiskbasedBuf* pBuf, SResultRow* pResult, S
       continue;
     }
 
-    //    int32_t functionId = pCtx[i].functionId;
-    //    if (functionId < 0) {
-    //      continue;
-    //    }
     //    if (functionId == FUNCTION_TOP || functionId == FUNCTION_BOTTOM || functionId == FUNCTION_DIFF) {
     //      if (i > 0) pCtx[i].ptsOutputBuf = pCtx[i - 1].pOutput;
     //    }
@@ -4971,7 +4968,20 @@ static SSDataBlock* doStreamBlockScan(SOperatorInfo* pOperator, bool* newgroup)
         return NULL;
       }
 
-      pInfo->pRes->pDataBlock = tqRetrieveDataBlock(pInfo->readerHandle);
+      SArray* pCols = tqRetrieveDataBlock(pInfo->readerHandle);
+
+      int32_t numOfCols = pInfo->pRes->info.numOfCols;
+      for (int32_t i = 0; i < numOfCols; ++i) {
+        SColumnInfoData* p = taosArrayGet(pCols, i);
+        SColMatchInfo*   pColMatchInfo = taosArrayGet(pInfo->pColMatchInfo, i);
+        if (!pColMatchInfo->output) {
+          continue;
+        }
+
+        ASSERT(pColMatchInfo->colId == p->info.colId);
+        taosArraySet(pInfo->pRes->pDataBlock, pColMatchInfo->targetSlotId, p);
+      }
+
       if (pInfo->pRes->pDataBlock == NULL) {
         // TODO add log
         pTaskInfo->code = terrno;
@@ -5625,8 +5635,18 @@ SOperatorInfo* createStreamScanOperatorInfo(void* streamReadHandle, SSDataBlock*
     return NULL;
   }
 
+  int32_t numOfOutput = taosArrayGetSize(pColList);
+
+  SArray* pColIds = taosArrayInit(4, sizeof(int16_t));
+  for(int32_t i = 0; i < numOfOutput; ++i) {
+    int16_t* id = taosArrayGet(pColList, i);
+    taosArrayPush(pColIds, id);
+  }
+
+  pInfo->pColMatchInfo = pColList;
+
   // set the extract column id to streamHandle
-  tqReadHandleSetColIdList((STqReadHandle*)streamReadHandle, pColList);
+  tqReadHandleSetColIdList((STqReadHandle*)streamReadHandle, pColIds);
   int32_t code = tqReadHandleSetTbUidList(streamReadHandle, pTableIdList);
   if (code != 0) {
     taosMemoryFreeClear(pInfo);
@@ -5665,9 +5685,9 @@ static int32_t loadSysTableContentCb(void* param, const SDataBuf* pMsg, int32_t
 
     SRetrieveMetaTableRsp* pRsp = pScanResInfo->pRsp;
     pRsp->numOfRows = htonl(pRsp->numOfRows);
-    pRsp->useconds = htobe64(pRsp->useconds);
-    pRsp->handle = htobe64(pRsp->handle);
-    pRsp->compLen = htonl(pRsp->compLen);
+    pRsp->useconds  = htobe64(pRsp->useconds);
+    pRsp->handle    = htobe64(pRsp->handle);
+    pRsp->compLen   = htonl(pRsp->compLen);
   } else {
     operator->pTaskInfo->code = code;
   }
@@ -5824,6 +5844,10 @@ static SSDataBlock* doSysTableScan(SOperatorInfo* pOperator, bool* newgroup) {
     //    pInfo->totalBytes;
     return (pInfo->pRes->info.rows == 0) ? NULL : pInfo->pRes;
   } else {  // load the meta from mnode of the given epset
+    if (pOperator->status == OP_EXEC_DONE) {
+      return NULL;
+    }
+
     int64_t startTs = taosGetTimestampUs();
 
     pInfo->req.type = pInfo->type;
@@ -5863,6 +5887,10 @@ static SSDataBlock* doSysTableScan(SOperatorInfo* pOperator, bool* newgroup) {
     SRetrieveMetaTableRsp* pRsp = pInfo->pRsp;
     pInfo->req.showId = pRsp->handle;
 
+    if (pRsp->numOfRows == 0 || pRsp->completed) {
+      pOperator->status = OP_EXEC_DONE;
+    }
+
     if (pRsp->numOfRows == 0) {
       //      qDebug("%s vgId:%d, taskID:0x%"PRIx64" %d of total completed, rowsOfSource:%"PRIu64", totalRows:%"PRIu64"
       //      try next",
@@ -6964,7 +6992,7 @@ static SSDataBlock* doStreamIntervalAgg(SOperatorInfo *pOperator, bool* newgroup
     if (pInfo->binfo.pRes->info.rows == 0 || !hasRemainDataInCurrentGroup(&pInfo->groupResInfo)) {
       pOperator->status = OP_EXEC_DONE;
     }
-    return pInfo->binfo.pRes;
+    return pInfo->binfo.pRes->info.rows == 0 ? NULL : pInfo->binfo.pRes;
   }
 
   //  STimeWindow win = {0};
@@ -6993,6 +7021,7 @@ static SSDataBlock* doStreamIntervalAgg(SOperatorInfo *pOperator, bool* newgroup
 
   finalizeUpdatedResult(pInfo->binfo.pCtx, pOperator->numOfOutput, pInfo->aggSup.pResultBuf, pUpdated, pInfo->binfo.rowCellInfoOffset);
 
+  initMultiResInfoFromArrayList(&pInfo->groupResInfo, pUpdated);
   blockDataEnsureCapacity(pInfo->binfo.pRes, pInfo->binfo.capacity);
   toSDatablock(&pInfo->groupResInfo, pInfo->aggSup.pResultBuf, pInfo->binfo.pRes, pInfo->binfo.capacity,
                pInfo->binfo.rowCellInfoOffset);
@@ -8792,10 +8821,10 @@ SOperatorInfo* createOperatorTree(SPhysiNode* pPhyNode, SExecTaskInfo* pTaskInfo
       SArray* tableIdList = extractTableIdList(pTableGroupInfo);
 
       SSDataBlock* pResBlock = createOutputBuf_rv1(pScanPhyNode->node.pOutputDataBlockDesc);
-      SArray*      colList = extractScanColumnId(pScanPhyNode->pScanCols);
 
-      SOperatorInfo* pOperator =
-          createStreamScanOperatorInfo(pHandle->reader, pResBlock, colList, tableIdList, pTaskInfo);
+      int32_t numOfCols = 0;
+      SArray* pColList = extractColMatchInfo(pScanPhyNode->pScanCols, pScanPhyNode->node.pOutputDataBlockDesc, &numOfCols);
+      SOperatorInfo* pOperator = createStreamScanOperatorInfo(pHandle->reader, pResBlock, pColList, tableIdList, pTaskInfo);
       taosArrayDestroy(tableIdList);
       return pOperator;
     } else if (QUERY_NODE_PHYSICAL_PLAN_SYSTABLE_SCAN == nodeType(pPhyNode)) {
diff --git a/source/libs/stream/src/tstream.c b/source/libs/stream/src/tstream.c
index fb6c0f6c12..5223aa1e3a 100644
--- a/source/libs/stream/src/tstream.c
+++ b/source/libs/stream/src/tstream.c
@@ -152,6 +152,7 @@ int32_t streamExecTask(SStreamTask* pTask, SMsgCb* pMsgCb, const void* input, in
   // sink
   if (pTask->sinkType == TASK_SINK__TABLE) {
     //
+    blockDebugShowData(pRes);
   } else if (pTask->sinkType == TASK_SINK__SMA) {
     pTask->smaSink.smaHandle(pTask->ahandle, pTask->smaSink.smaId, pRes);
     //