fix: filter merge issue

source/libs/executor/src/executorimpl.c

@@ -3384,6 +3384,11 @@ SOperatorInfo* createOperatorTree(SPhysiNode* pPhyNode, SExecTaskInfo* pTaskInfo
       }
 
       pOperator = createTableScanOperatorInfo(pTableScanNode, pHandle, pTaskInfo);
+      if (NULL == pOperator) {
+        pTaskInfo->code = terrno;
+        return NULL;
+      }
+
       STableScanInfo* pScanInfo = pOperator->info;
       pTaskInfo->cost.pRecoder = &pScanInfo->readRecorder;
     } else if (QUERY_NODE_PHYSICAL_PLAN_TABLE_MERGE_SCAN == type) {
@@ -3404,6 +3409,10 @@ SOperatorInfo* createOperatorTree(SPhysiNode* pPhyNode, SExecTaskInfo* pTaskInfo
       }
 
       pOperator = createTableMergeScanOperatorInfo(pTableScanNode, pTableListInfo, pHandle, pTaskInfo);
+      if (NULL == pOperator) {
+        pTaskInfo->code = terrno;
+        return NULL;
+      }
 
       STableScanInfo* pScanInfo = pOperator->info;
       pTaskInfo->cost.pRecoder = &pScanInfo->readRecorder;

source/libs/scalar/src/filter.c

@@ -912,8 +912,8 @@ int32_t filterDetachCnfGroups(SArray *group, SArray *left, SArray *right) {
 
   if (taosArrayGetSize(left) <= 0) {
     if (taosArrayGetSize(right) <= 0) {
-      fltError("both groups are empty");
-      FLT_ERR_RET(TSDB_CODE_QRY_APP_ERROR);
+      fltDebug("both groups are empty");
+      return TSDB_CODE_SUCCESS;
     }
 
     SFilterGroup *gp = NULL;