fix(query): add the null ptr check.

source/dnode/vnode/src/tsdb/tsdbRead.c

@@ -2367,7 +2367,7 @@ static int32_t doLoadLastBlockSequentially(STsdbReader* pReader) {
 
   SUidOrderCheckInfo *pOrderedCheckInfo = &pStatus->uidCheckInfo;
   int32_t code = initOrderCheckInfo(pOrderedCheckInfo, pStatus);
-  if (code != TSDB_CODE_SUCCESS) {
+  if (code != TSDB_CODE_SUCCESS || (taosHashGetSize(pStatus->pTableMap) == 0)) {
     return code;
   }
 

source/libs/executor/src/executorimpl.c

@@ -600,7 +600,7 @@ int32_t projectApplyFunctions(SExprInfo* pExpr, SSDataBlock* pResult, SSDataBloc
     if (pExpr[k].pExpr->nodeType == QUERY_NODE_COLUMN) {  // it is a project query
       SColumnInfoData* pColInfoData = taosArrayGet(pResult->pDataBlock, outputSlotId);
       if (pResult->info.rows > 0 && !createNewColModel) {
-        colDataMergeCol(pColInfoData, pResult->info.rows, &pResult->info.capacity, pInputData->pData[0],
+        colDataMergeCol(pColInfoData, pResult->info.rows, (int32_t*)&pResult->info.capacity, pInputData->pData[0],
                         pInputData->numOfRows);
       } else {
         colDataAssign(pColInfoData, pInputData->pData[0], pInputData->numOfRows, &pResult->info);
@@ -638,7 +638,7 @@ int32_t projectApplyFunctions(SExprInfo* pExpr, SSDataBlock* pResult, SSDataBloc
 
       int32_t startOffset = createNewColModel ? 0 : pResult->info.rows;
       ASSERT(pResult->info.capacity > 0);
-      colDataMergeCol(pResColData, startOffset, &pResult->info.capacity, &idata, dest.numOfRows);
+      colDataMergeCol(pResColData, startOffset, (int32_t*)&pResult->info.capacity, &idata, dest.numOfRows);
       colDataDestroy(&idata);
 
       numOfRows = dest.numOfRows;
@@ -703,7 +703,7 @@ int32_t projectApplyFunctions(SExprInfo* pExpr, SSDataBlock* pResult, SSDataBloc
 
         int32_t startOffset = createNewColModel ? 0 : pResult->info.rows;
         ASSERT(pResult->info.capacity > 0);
-        colDataMergeCol(pResColData, startOffset, &pResult->info.capacity, &idata, dest.numOfRows);
+        colDataMergeCol(pResColData, startOffset, (int32_t*)&pResult->info.capacity, &idata, dest.numOfRows);
         colDataDestroy(&idata);
 
         numOfRows = dest.numOfRows;

source/libs/executor/src/groupoperator.c

@@ -702,8 +702,8 @@ static SSDataBlock* hashPartition(SOperatorInfo* pOperator) {
   }
 
   SArray* groupArray = taosArrayInit(taosHashGetSize(pInfo->pGroupSet), sizeof(SDataGroupInfo));
-  void* pGroupIter = NULL;
-  pGroupIter = taosHashIterate(pInfo->pGroupSet, NULL);
+
+  void* pGroupIter = taosHashIterate(pInfo->pGroupSet, NULL);
   while (pGroupIter != NULL) {
     SDataGroupInfo* pGroupInfo = pGroupIter;
     taosArrayPush(groupArray, pGroupInfo);