diff --git a/source/dnode/vnode/src/tsdb/tsdbRead.c b/source/dnode/vnode/src/tsdb/tsdbRead.c
index c346eeef1da4a480bf033d6d19b5d2891f1313fd..bc09b4810c3c5cfd9310586d815ee66705193abd 100644
--- a/source/dnode/vnode/src/tsdb/tsdbRead.c
+++ b/source/dnode/vnode/src/tsdb/tsdbRead.c
@@ -1515,6 +1515,11 @@ static FORCE_INLINE STSchema* doGetSchemaForTSRow(int32_t sversion, STsdbReader*
 
   taosMemoryFree(pReader->pMemSchema);
   int32_t code = metaGetTbTSchemaEx(pReader->pTsdb->pVnode->pMeta, pReader->suid, uid, sversion, &pReader->pMemSchema);
+  if (code != TSDB_CODE_SUCCESS) {
+    terrno = code;
+    return NULL;
+  }
+
   return pReader->pMemSchema;
 }
 
@@ -3732,7 +3737,7 @@ SArray* tsdbRetrieveDataBlock(STsdbReader* pReader, SArray* pIdList) {
 }
 
 int32_t tsdbReaderReset(STsdbReader* pReader, SQueryTableDataCond* pCond) {
-  if (isEmptyQueryTimeWindow(&pReader->window)) {
+  if (isEmptyQueryTimeWindow(&pReader->window) || pReader->pReadSnap == NULL) {
     return TSDB_CODE_SUCCESS;
   }
 
diff --git a/source/libs/executor/src/executor.c b/source/libs/executor/src/executor.c
index 413813f58adec76766a741cd758b01c458f4b26e..01915a7ffbc8ef86c057a0b08c3a762212fb3055 100644
--- a/source/libs/executor/src/executor.c
+++ b/source/libs/executor/src/executor.c
@@ -616,7 +616,7 @@ int32_t qSerializeTaskStatus(qTaskInfo_t tinfo, char** pOutput, int32_t* len) {
 
   int32_t nOptrWithVal = 0;
   int32_t code = encodeOperator(pTaskInfo->pRoot, pOutput, len, &nOptrWithVal);
-  if ((code == TSDB_CODE_SUCCESS) && (nOptrWithVal = 0)) {
+  if ((code == TSDB_CODE_SUCCESS) && (nOptrWithVal == 0)) {
     taosMemoryFreeClear(*pOutput);
     *len = 0;
   }
diff --git a/source/libs/executor/src/scanoperator.c b/source/libs/executor/src/scanoperator.c
index 66fad27d71c3c5b6e7d1741ec96ffe36be5c0bff..b878112545927a9838517974e5b94f4b70807e25 100644
--- a/source/libs/executor/src/scanoperator.c
+++ b/source/libs/executor/src/scanoperator.c
@@ -284,6 +284,19 @@ static bool doLoadBlockSMA(STableScanInfo* pTableScanInfo, SSDataBlock* pBlock,
   return true;
 }
 
+
+static void doSetTagColumnData(STableScanInfo* pTableScanInfo, SSDataBlock* pBlock, SExecTaskInfo* pTaskInfo) {
+  if (pTableScanInfo->pseudoSup.numOfExprs > 0) {
+    SExprSupp* pSup = &pTableScanInfo->pseudoSup;
+
+    int32_t code = addTagPseudoColumnData(&pTableScanInfo->readHandle, pSup->pExprInfo, pSup->numOfExprs, pBlock,
+                                          GET_TASKID(pTaskInfo));
+    if (code != TSDB_CODE_SUCCESS) {
+      T_LONG_JMP(pTaskInfo->env, code);
+    }
+  }
+}
+
 static int32_t loadDataBlock(SOperatorInfo* pOperator, STableScanInfo* pTableScanInfo, SSDataBlock* pBlock,
                              uint32_t* status) {
   SExecTaskInfo*  pTaskInfo = pOperator->pTaskInfo;
@@ -313,7 +326,6 @@ static int32_t loadDataBlock(SOperatorInfo* pOperator, STableScanInfo* pTableSca
     qDebug("%s data block skipped, brange:%" PRId64 "-%" PRId64 ", rows:%d", GET_TASKID(pTaskInfo),
            pBlockInfo->window.skey, pBlockInfo->window.ekey, pBlockInfo->rows);
     pCost->skipBlocks += 1;
-
     return TSDB_CODE_SUCCESS;
   } else if (*status == FUNC_DATA_REQUIRED_STATIS_LOAD) {
     pCost->loadBlockStatis += 1;
@@ -322,6 +334,7 @@ static int32_t loadDataBlock(SOperatorInfo* pOperator, STableScanInfo* pTableSca
     if (success) {  // failed to load the block sma data, data block statistics does not exist, load data block instead
       qDebug("%s data block SMA loaded, brange:%" PRId64 "-%" PRId64 ", rows:%d", GET_TASKID(pTaskInfo),
              pBlockInfo->window.skey, pBlockInfo->window.ekey, pBlockInfo->rows);
+      doSetTagColumnData(pTableScanInfo, pBlock, pTaskInfo);
       return TSDB_CODE_SUCCESS;
     } else {
       qDebug("%s failed to load SMA, since not all columns have SMA", GET_TASKID(pTaskInfo));
@@ -371,17 +384,7 @@ static int32_t loadDataBlock(SOperatorInfo* pOperator, STableScanInfo* pTableSca
   }
 
   relocateColumnData(pBlock, pTableScanInfo->pColMatchInfo, pCols, true);
-
-  // currently only the tbname pseudo column
-  if (pTableScanInfo->pseudoSup.numOfExprs > 0) {
-    SExprSupp* pSup = &pTableScanInfo->pseudoSup;
-
-    int32_t code = addTagPseudoColumnData(&pTableScanInfo->readHandle, pSup->pExprInfo, pSup->numOfExprs, pBlock,
-                                          GET_TASKID(pTaskInfo));
-    if (code != TSDB_CODE_SUCCESS) {
-      T_LONG_JMP(pTaskInfo->env, code);
-    }
-  }
+  doSetTagColumnData(pTableScanInfo, pBlock, pTaskInfo);
 
   if (pTableScanInfo->pFilterNode != NULL) {
     int64_t st = taosGetTimestampUs();
@@ -1316,7 +1319,7 @@ static void calBlockTag(SExprSupp* pTagCalSup, SSDataBlock* pBlock, SSDataBlock*
 
   blockDataEnsureCapacity(pResBlock, 1);
 
-  projectApplyFunctions(pTagCalSup->pExprInfo, pResBlock, pSrcBlock, pTagCalSup->pCtx, pTagCalSup->numOfExprs, NULL);
+  projectApplyFunctions(pTagCalSup->pExprInfo, pResBlock, pSrcBlock, pTagCalSup->pCtx, 1, NULL);
   ASSERT(pResBlock->info.rows == 1);
 
   // build tagArray
@@ -2120,9 +2123,6 @@ static void destroyStreamScanOperatorInfo(void* param) {
     taosMemoryFree(pStreamScan->pPseudoExpr);
   }
 
-  cleanupExprSupp(&pStreamScan->tbnameCalSup);
-  cleanupExprSupp(&pStreamScan->tagCalSup);
-
   updateInfoDestroy(pStreamScan->pUpdateInfo);
   blockDataDestroy(pStreamScan->pRes);
   blockDataDestroy(pStreamScan->pUpdateRes);
diff --git a/source/libs/executor/src/timewindowoperator.c b/source/libs/executor/src/timewindowoperator.c
index 9c219d2765b1c6d4827ec01d387924c7b9f335d5..cbbd874bb911c2df82f54cc6eecc7e2956d6e362 100644
--- a/source/libs/executor/src/timewindowoperator.c
+++ b/source/libs/executor/src/timewindowoperator.c
@@ -2842,14 +2842,13 @@ SOperatorInfo* createSessionAggOperatorInfo(SOperatorInfo* downstream, SSessionW
   int32_t      numOfCols = 0;
   SExprInfo*   pExprInfo = createExprInfo(pSessionNode->window.pFuncs, NULL, &numOfCols);
   SSDataBlock* pResBlock = createResDataBlock(pSessionNode->window.node.pOutputDataBlockDesc);
+  initBasicInfo(&pInfo->binfo, pResBlock);
 
   int32_t code = initAggInfo(&pOperator->exprSupp, &pInfo->aggSup, pExprInfo, numOfCols, keyBufSize, pTaskInfo->id.str);
   if (code != TSDB_CODE_SUCCESS) {
     goto _error;
   }
 
-  initBasicInfo(&pInfo->binfo, pResBlock);
-
   pInfo->twAggSup.waterMark = pSessionNode->window.watermark;
   pInfo->twAggSup.calTrigger = pSessionNode->window.triggerType;
   pInfo->gap = pSessionNode->gap;
@@ -4666,7 +4665,6 @@ void destroyStreamStateOperatorInfo(void* param) {
       SStreamSessionAggOperatorInfo* pChInfo = pChild->info;
       destroyStreamSessionAggOperatorInfo(pChInfo);
       taosMemoryFreeClear(pChild);
-      taosMemoryFreeClear(pChInfo);
     }
   }
   colDataDestroy(&pInfo->twAggSup.timeWindowData);
diff --git a/source/libs/planner/src/planOptimizer.c b/source/libs/planner/src/planOptimizer.c
index cd02e7a1365051b374e1aae201618a14e48b326e..7fd90dd4e8003e91fde947f01f8ef463a2086286 100644
--- a/source/libs/planner/src/planOptimizer.c
+++ b/source/libs/planner/src/planOptimizer.c
@@ -124,9 +124,8 @@ static void optSetParentOrder(SLogicNode* pNode, EOrder order) {
 
 EDealRes scanPathOptHaveNormalColImpl(SNode* pNode, void* pContext) {
   if (QUERY_NODE_COLUMN == nodeType(pNode)) {
-    // *((bool*)pContext) =
-    //     (COLUMN_TYPE_TAG != ((SColumnNode*)pNode)->colType && COLUMN_TYPE_TBNAME != ((SColumnNode*)pNode)->colType);
-    *((bool*)pContext) = true;
+     *((bool*)pContext) =
+         (COLUMN_TYPE_TAG != ((SColumnNode*)pNode)->colType && COLUMN_TYPE_TBNAME != ((SColumnNode*)pNode)->colType);
     return *((bool*)pContext) ? DEAL_RES_END : DEAL_RES_IGNORE_CHILD;
   }
   return DEAL_RES_CONTINUE;