add more check

b04919c5 · wpan · cb90fe2b · b04919c5
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Showing with 4 addition and 2 deletion

src/query/src/qExecutor.c src/query/src/qExecutor.c +4 -2

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--- a/src/query/src/qExecutor.c
+++ b/src/query/src/qExecutor.c
@@ -5517,7 +5517,9 @@ static SSDataBlock* doSort(void* param, bool* newgroup) {
  }

  __compar_fn_t  comp = getKeyComparFunc(pSchema[pInfo->colIndex].type, pInfo->order);
+  if (pInfo->pDataBlock->info.rows) {
    taoscQSort(pCols, pSchema, numOfCols, pInfo->pDataBlock->info.rows, pInfo->colIndex, comp);
+  }
  
  tfree(pCols);
  tfree(pSchema);