diff --git a/source/libs/function/src/builtinsimpl.c b/source/libs/function/src/builtinsimpl.c
index b6fe5b999801ccdba27f95905004311fbebeb596..92f9bdd1b2fa12b0a7a5627087df9729bf32629c 100644
--- a/source/libs/function/src/builtinsimpl.c
+++ b/source/libs/function/src/builtinsimpl.c
@@ -2218,6 +2218,7 @@ int32_t leastSQRFinalize(SqlFunctionCtx* pCtx, SSDataBlock* pBlock) {
   int32_t currentRow = pBlock->info.rows;
 
   if (0 == pInfo->num) {
+    colDataAppendNULL(pCol, currentRow);
     return 0;
   }