diff --git a/include/common/tcommon.h b/include/common/tcommon.h
index 60bace3f73dafe676e3e5748fa31f523b6c3d48f..73ba0f47b8d3003f6f924db86be3b2830444be4d 100644
--- a/include/common/tcommon.h
+++ b/include/common/tcommon.h
@@ -45,6 +45,7 @@ typedef enum EStreamType {
   STREAM_REPROCESS,
   STREAM_INVALID,
   STREAM_GET_ALL,
+  STREAM_DELETE,
 } EStreamType;
 
 typedef struct {
diff --git a/source/libs/executor/src/timewindowoperator.c b/source/libs/executor/src/timewindowoperator.c
index ad72fd26af4c163327387323db154035eb10ebbc..7b9b56fb73a6d6132f4c54b8703dc92cc2e889de 100644
--- a/source/libs/executor/src/timewindowoperator.c
+++ b/source/libs/executor/src/timewindowoperator.c
@@ -2578,6 +2578,7 @@ SOperatorInfo* createStreamSessionAggOperatorInfo(SOperatorInfo* downstream, SPh
   pInfo->pStDeleted = taosHashInit(64, hashFn, true, HASH_NO_LOCK);
   pInfo->pDelIterator = NULL;
   pInfo->pDelRes = createOneDataBlock(pResBlock, false);
+  pInfo->pDelRes->info.type = STREAM_DELETE;
   blockDataEnsureCapacity(pInfo->pDelRes, 64);
   pInfo->pChildren = NULL;
   pInfo->isFinal = false;
@@ -3650,6 +3651,7 @@ SOperatorInfo* createStreamStateAggOperatorInfo(SOperatorInfo* downstream, SPhys
   pInfo->pSeDeleted = taosHashInit(64, hashFn, true, HASH_NO_LOCK);
   pInfo->pDelIterator = NULL;
   pInfo->pDelRes = createOneDataBlock(pResBlock, false);
+  pInfo->pDelRes->info.type = STREAM_DELETE;
   blockDataEnsureCapacity(pInfo->pDelRes, 64);
   pInfo->pChildren = NULL;