diff --git a/source/libs/executor/src/timewindowoperator.c b/source/libs/executor/src/timewindowoperator.c
index 9b4b7f1ee8..dceb696d54 100644
--- a/source/libs/executor/src/timewindowoperator.c
+++ b/source/libs/executor/src/timewindowoperator.c
@@ -1402,7 +1402,7 @@ static void doDeleteWindows(SOperatorInfo* pOperator, SInterval* pInterval, int3
     SResultRowInfo dumyInfo;
     dumyInfo.cur.pageId = -1;
     STimeWindow win = getActiveTimeWindow(NULL, &dumyInfo, startTsCols[i], pInterval, TSDB_ORDER_ASC);
-    while (win.skey <= endTsCols[i]) {
+    do {
       uint64_t winGpId = pGpDatas[i];
       bool     res = doDeleteWindow(pOperator, win.skey, winGpId, numOfOutput);
       SWinKey  winRes = {.ts = win.skey, .groupId = winGpId};
@@ -1413,7 +1413,7 @@ static void doDeleteWindows(SOperatorInfo* pOperator, SInterval* pInterval, int3
         taosHashRemove(pUpdatedMap, &winRes, sizeof(SWinKey));
       }
       getNextTimeWindow(pInterval, pInterval->precision, TSDB_ORDER_ASC, &win);
-    }
+    } while (win.ekey <= endTsCols[i]);
   }
 }
 
@@ -3067,8 +3067,12 @@ static void doStreamIntervalAggImpl(SOperatorInfo* pOperatorInfo, SSDataBlock* p
 
   int32_t     startPos = 0;
   TSKEY       ts = getStartTsKey(&pSDataBlock->info.window, tsCols);
-  STimeWindow nextWin =
-      getActiveTimeWindow(pInfo->aggSup.pResultBuf, pResultRowInfo, ts, &pInfo->interval, TSDB_ORDER_ASC);
+  STimeWindow nextWin = {0};
+  if (IS_FINAL_OP(pInfo)) {
+    nextWin = getFinalTimeWindow(ts, &pInfo->interval);
+  } else {
+    nextWin = getActiveTimeWindow(pInfo->aggSup.pResultBuf, pResultRowInfo, ts, &pInfo->interval, TSDB_ORDER_ASC);
+  }
   while (1) {
     bool isClosed = isCloseWindow(&nextWin, &pInfo->twAggSup);
     if ((pInfo->ignoreExpiredData && isClosed) || !inSlidingWindow(&pInfo->interval, &nextWin, &pSDataBlock->info)) {
@@ -3122,8 +3126,12 @@ static void doStreamIntervalAggImpl(SOperatorInfo* pOperatorInfo, SSDataBlock* p
       T_LONG_JMP(pTaskInfo->env, TSDB_CODE_QRY_OUT_OF_MEMORY);
     }
 
-    forwardRows = getNumOfRowsInTimeWindow(&pSDataBlock->info, tsCols, startPos, nextWin.ekey, binarySearchForKey, NULL,
-                                           TSDB_ORDER_ASC);
+    if (IS_FINAL_OP(pInfo)) {
+      forwardRows = 1;
+    } else {
+      forwardRows = getNumOfRowsInTimeWindow(&pSDataBlock->info, tsCols, startPos, nextWin.ekey, binarySearchForKey,
+                                             NULL, TSDB_ORDER_ASC);
+    }
     if (pInfo->twAggSup.calTrigger == STREAM_TRIGGER_AT_ONCE && pUpdatedMap) {
       saveWinResultInfo(pResult->win.skey, groupId, pUpdatedMap);
     }
diff --git a/tests/script/tsim/stream/sliding.sim b/tests/script/tsim/stream/sliding.sim
index bd8d3b0579..b7477fe36c 100644
--- a/tests/script/tsim/stream/sliding.sim
+++ b/tests/script/tsim/stream/sliding.sim
@@ -369,9 +369,10 @@ endi
 #$loop_all = 0
 #=looptest:
 
-sql drop database IF EXISTS test2;
 sql drop stream IF EXISTS streams21;
 sql drop stream IF EXISTS streams22;
+sql drop stream IF EXISTS streams23;
+sql drop database IF EXISTS test2;
 
 sql create database test2 vgroups 6;
 sql use test2;
@@ -381,6 +382,7 @@ sql create table t2 using st tags(2,2,2);
 
 sql create stream streams21 trigger at_once  into streamt as select  _wstart, count(*) c1, sum(a) c3 , max(b)  c4, min(c) c5 from t1 interval(10s, 5s);
 sql create stream streams22 trigger at_once  into streamt2 as select  _wstart, count(*) c1, sum(a) c3 , max(b)  c4, min(c) c5 from st interval(10s, 5s);
+sql create stream streams23 trigger at_once  into streamt3 as select  _wstart, count(*) c1, sum(a) c3 , max(b)  c4, min(c) c5 from st interval(20s) sliding(10s);
 
 sql insert into t1 values(1648791213000,1,1,1,1.0);
 sql insert into t1 values(1648791223001,2,2,2,1.1);
@@ -508,6 +510,50 @@ if $data32 != 8 then
   goto loop3
 endi
 
+
+$loop_count = 0
+
+loop4:
+sleep 100
+
+$loop_count = $loop_count + 1
+if $loop_count == 10 then
+  return -1
+endi
+
+sql select * from streamt3;
+
+# row 0
+if $rows != 5 then
+  print =====rows=$rows
+  goto loop4
+endi
+
+if $data01 != 4 then
+  print =====data01=$data01
+  goto loop4
+endi
+
+if $data11 != 6 then
+  print =====data11=$data11
+  goto loop4
+endi
+
+if $data21 != 4 then
+  print =====data21=$data21
+  goto loop4
+endi
+
+if $data31 != 4 then
+  print =====data31=$data31
+  goto loop4
+endi
+
+if $data41 != 2 then
+  print =====data41=$data41
+  goto loop4
+endi
+
 $loop_all = $loop_all + 1
 print ============loop_all=$loop_all