Merge pull request #15497 from taosdata/enh/TD-17659

fix(query): fix max/min/sum null input output behavior to 0 rows

source/libs/function/src/builtinsimpl.c

@@ -612,8 +612,7 @@ int32_t sumFunction(SqlFunctionCtx* pCtx) {
   SSumRes* pSumRes = GET_ROWCELL_INTERBUF(GET_RES_INFO(pCtx));
 
   if (IS_NULL_TYPE(type)) {
-    GET_RES_INFO(pCtx)->isNullRes = 1;
-    numOfElem = 1;
+    numOfElem = 0;
     goto _sum_over;
   }
 
@@ -1172,8 +1171,7 @@ int32_t doMinMaxHelper(SqlFunctionCtx* pCtx, int32_t isMinFunc) {
   SMinmaxResInfo*      pBuf = GET_ROWCELL_INTERBUF(pResInfo);
 
   if (IS_NULL_TYPE(type)) {
-    GET_RES_INFO(pCtx)->isNullRes = 1;
-    numOfElems = 1;
+    numOfElems = 0;
     goto _min_max_over;
   }