[TD-2895] refactor

src/query/src/qExecutor.c

@@ -3980,7 +3980,7 @@ void copyToOutputBuf(SQInfo *pQInfo, SResultRowInfo *pResultInfo) {
   SGroupResInfo *pGroupResInfo = &pQInfo->groupResInfo;
 
   assert(pQuery->rec.rows == 0 && pGroupResInfo->currentGroup <= pGroupResInfo->totalGroup);
-  if (pGroupResInfo->index >= taosArrayGetSize(pGroupResInfo->pRows)) {
+  if (!hasRemainData(pGroupResInfo)) {
     return;
   }
 
@@ -4034,6 +4034,10 @@ bool hasNotReturnedResults(SQueryRuntimeEnv* pRuntimeEnv, SGroupResInfo* pGroupR
   SQuery *pQuery = pRuntimeEnv->pQuery;
   SFillInfo *pFillInfo = pRuntimeEnv->pFillInfo;
 
+  if (!Q_STATUS_EQUAL(pQuery->status, QUERY_COMPLETED)) {
+      return false;
+  }
+
   if (pQuery->limit.limit > 0 && pQuery->rec.total >= pQuery->limit.limit) {
     return false;
   }
@@ -5682,7 +5686,7 @@ static void tableIntervalProcess(SQInfo *pQInfo, STableQueryInfo* pTableInfo) {
   if (pQuery->fillType == TSDB_FILL_NONE || pRuntimeEnv->resultRowInfo.size == 0 || isPointInterpoQuery(pQuery)) {
     // all data scanned, the group by normal column can return
     int32_t numOfClosed = numOfClosedResultRows(&pRuntimeEnv->resultRowInfo);
-    if (pQuery->limit.offset > numOfClosed) {
+    if (pQuery->limit.offset > numOfClosed || numOfClosed == 0) {
       return;
     }
 

tests/script/general/parser/projection_limit_offset.sim

@@ -334,6 +334,9 @@ sql insert into tm0 values(10000, 1) (20000, 2)(30000, 3) (40000, NULL) (50000,
 
 #=============================tbase-1205
 sql select count(*) from tm1 where ts<now and ts>= now -1d interval(1h) fill(NULL);
+if $rows != 0 then
+  return -1
+endi
 
 print ===================>TD-1834
 sql select * from tm0 where ts>11000 and ts< 20000 order by ts asc