fix: get ts column when data loaded

source/libs/executor/src/projectoperator.c

@@ -351,6 +351,7 @@ SSDataBlock* doProjectOperation(SOperatorInfo* pOperator) {
 
   SSDataBlock* p = pProjectInfo->mergeDataBlocks ? pFinalRes : pRes;
   pOperator->resultInfo.totalRows += p->info.rows;
+  p->info.dataLoad = 1;
 
   if (pOperator->cost.openCost == 0) {
     pOperator->cost.openCost = (taosGetTimestampUs() - st) / 1000.0;

source/libs/executor/src/timewindowoperator.c

@@ -1037,7 +1037,7 @@ SResultRowPosition addToOpenWindowList(SResultRowInfo* pResultRowInfo, const SRe
 int64_t* extractTsCol(SSDataBlock* pBlock, const SIntervalAggOperatorInfo* pInfo) {
   TSKEY* tsCols = NULL;
 
-  if (pBlock->pDataBlock != NULL && pBlock->info.rows > 0) {
+  if (pBlock->pDataBlock != NULL && pBlock->info.dataLoad) {
     SColumnInfoData* pColDataInfo = taosArrayGet(pBlock->pDataBlock, pInfo->primaryTsIndex);
     tsCols = (int64_t*)pColDataInfo->pData;
     ASSERT(tsCols[0] != 0);