diff --git a/src/query/src/qExecutor.c b/src/query/src/qExecutor.c
index 1103b9b531b71b3a587cd82697bf2f6923f79dd9..bf72f209d6add6e85269fecc2a8ab0bb814d8241 100644
--- a/src/query/src/qExecutor.c
+++ b/src/query/src/qExecutor.c
@@ -5262,7 +5262,7 @@ static void stableQueryImpl(SQInfo *pQInfo) {
   int64_t st = taosGetTimestampUs();
 
   if (QUERY_IS_INTERVAL_QUERY(pQuery) ||
-      (isFixedOutputQuery(pRuntimeEnv) && (!isPointInterpoQuery(pQuery)) && !pRuntimeEnv->groupbyNormalCol)) {
+      (isFixedOutputQuery(pRuntimeEnv) && (!isPointInterpoQuery(pQuery)) && (!pRuntimeEnv->groupbyNormalCol))) {
     multiTableQueryProcess(pQInfo);
   } else {
     assert((pQuery->checkBuffer == 1 && pQuery->intervalTime == 0) || isPointInterpoQuery(pQuery) ||
diff --git a/src/tsdb/src/tsdbRead.c b/src/tsdb/src/tsdbRead.c
index ba46427b1ab5b2a08a133fb0822a83bdcc19e064..b189c7a40692d73eee4f97d05e456970043963ab 100644
--- a/src/tsdb/src/tsdbRead.c
+++ b/src/tsdb/src/tsdbRead.c
@@ -301,6 +301,9 @@ TsdbQueryHandleT tsdbQueryLastRow(TSDB_REPO_T *tsdb, STsdbQueryCond *pCond, STab
   pCond->order = TSDB_ORDER_DESC;
   pCond->twindow = changeTableGroupByLastrow(groupList);
 
+  //descending order query, skey >= ekey
+  SWAP(pCond->twindow.skey, pCond->twindow.ekey, TSKEY);
+
   STsdbQueryHandle *pQueryHandle = (STsdbQueryHandle*) tsdbQueryTables(tsdb, pCond, groupList, qinfo);
   return pQueryHandle;
 }