fix(query): fix max/min with null input

source/libs/function/src/builtinsimpl.c

@@ -466,7 +466,7 @@ int32_t functionFinalize(SqlFunctionCtx* pCtx, SSDataBlock* pBlock) {
   SColumnInfoData* pCol = taosArrayGet(pBlock->pDataBlock, slotId);
 
   SResultRowEntryInfo* pResInfo = GET_RES_INFO(pCtx);
-  pResInfo->isNullRes = (pResInfo->isNullRes == 1) ? 1 : (pResInfo->numOfRes == 0) ? 1 : 0;
+  pResInfo->isNullRes = (pResInfo->isNullRes == 1) ? 1 : (pResInfo->numOfRes == 0);
 
   char* in = GET_ROWCELL_INTERBUF(pResInfo);
   colDataAppend(pCol, pBlock->info.rows, in, pResInfo->isNullRes);
@@ -1606,7 +1606,7 @@ int32_t minmaxFunctionFinalize(SqlFunctionCtx* pCtx, SSDataBlock* pBlock) {
   int32_t currentRow = pBlock->info.rows;
 
   SColumnInfoData* pCol = taosArrayGet(pBlock->pDataBlock, slotId);
-  pEntryInfo->isNullRes = (pEntryInfo->numOfRes == 0);
+  pEntryInfo->isNullRes = (pEntryInfo->isNullRes == 1) ? 1 : (pEntryInfo->numOfRes == 0);
 
   if (pCol->info.type == TSDB_DATA_TYPE_FLOAT) {
     float v = *(double*)&pRes->v;