[td-3662]fix bug found by regression test.

src/client/src/tscLocalMerge.c

@@ -351,6 +351,8 @@ void tscCreateLocalMerger(tExtMemBuffer **pMemBuffer, int32_t numOfBuffer, tOrde
   }
 
   assert(finalmodel->rowSize > 0 && finalmodel->rowSize <= pReducer->rowSize);
+  printf("------xxxx:%d\n", pReducer->rowSize * pReducer->resColModel->capacity);
+
   pReducer->pFinalRes = calloc(1, pReducer->rowSize * pReducer->resColModel->capacity);
 
   if (pReducer->pTempBuffer == NULL || pReducer->discardData == NULL || pReducer->pResultBuf == NULL ||
@@ -942,6 +944,7 @@ static void genFinalResWithoutFill(SSqlRes* pRes, SLocalMerger *pLocalMerge, SQu
     savePrevRecordAndSetupFillInfo(pLocalMerge, pQueryInfo, pLocalMerge->pFillInfo);
   }
 
+  printf("size: %d\n", pRes->numOfRows * pLocalMerge->finalModel->rowSize);
   memcpy(pRes->data, pBeforeFillData->data, (size_t)(pRes->numOfRows * pLocalMerge->finalModel->rowSize));
 
   pRes->numOfClauseTotal += pRes->numOfRows;

tests/script/general/parser/select_with_tags.sim

@@ -159,6 +159,9 @@ if $data03 != @abc15@ then
    return -1
 endi
 
+sql select top(c6, 3) from select_tags_mt0 interval(10a)
+
+
 sql select top(c1, 100), tbname, t1, t2 from select_tags_mt0;
 if $rows != 100 then
    return -1