fix partition/group by tag count should not have output

source/libs/executor/inc/executorimpl.h

@@ -332,6 +332,7 @@ typedef struct STableScanInfo {
   int32_t                currentTable;
   int8_t                 scanMode;
   int8_t                 assignBlockUid;
+  bool                   hasGroupByTag;
 } STableScanInfo;
 
 typedef struct STableMergeScanInfo {

source/libs/executor/src/executorimpl.c

@@ -1424,6 +1424,13 @@ static int32_t createDataBlockForEmptyInput(SOperatorInfo* pOperator, SSDataBloc
     return TSDB_CODE_SUCCESS;
   }
 
+  SOperatorInfo* downstream = pOperator->pDownstream[0];
+  if (downstream->operatorType != QUERY_NODE_PHYSICAL_PLAN_PARTITION ||
+      (downstream->operatorType == QUERY_NODE_PHYSICAL_PLAN_TABLE_SCAN &&
+       ((STableScanInfo *)downstream->info)->hasGroupByTag == true)) {
+    return TSDB_CODE_SUCCESS;
+  }
+
   SqlFunctionCtx* pCtx = pOperator->exprSupp.pCtx;
   bool hasCountFunc = false;
   for (int32_t i = 0; i < pOperator->exprSupp.numOfExprs; ++i) {

source/libs/executor/src/scanoperator.c

@@ -895,6 +895,7 @@ SOperatorInfo* createTableScanOperatorInfo(STableScanPhysiNode* pTableScanNode,
 
   pInfo->currentGroupId = -1;
   pInfo->assignBlockUid = pTableScanNode->assignBlockUid;
+  pInfo->hasGroupByTag = pTableScanNode->pGroupTags ? true : false;
 
   setOperatorInfo(pOperator, "TableScanOperator", QUERY_NODE_PHYSICAL_PLAN_TABLE_SCAN, false, OP_NOT_OPENED, pInfo,
                   pTaskInfo);