diff --git a/source/common/src/tdatablock.c b/source/common/src/tdatablock.c
index 536cbed33e8353d704ef30096d2b2514d8e28632..f5dba354405855cdc5a308dce7db91d6ac9c63cb 100644
--- a/source/common/src/tdatablock.c
+++ b/source/common/src/tdatablock.c
@@ -1306,6 +1306,7 @@ int32_t copyDataBlock(SSDataBlock* dst, const SSDataBlock* src) {
 
     colDataAssign(pDst, pSrc, src->info.rows, &src->info);
   }
+
   uint32_t cap = dst->info.capacity;
   dst->info = src->info;
   dst->info.capacity = cap;
diff --git a/source/libs/executor/inc/executorimpl.h b/source/libs/executor/inc/executorimpl.h
index e70cf37c63260cd03ff0075a926c51de975d24c2..a2e269dd51a117b87b7587924a11e035f4818f82 100644
--- a/source/libs/executor/inc/executorimpl.h
+++ b/source/libs/executor/inc/executorimpl.h
@@ -153,14 +153,13 @@ typedef struct {
   SSchemaWrapper* qsw;
 } SSchemaInfo;
 
-typedef struct SExecTaskInfo {
-  STaskIdInfo   id;
-  uint32_t      status;
-  STimeWindow   window;
-  STaskCostInfo cost;
-  int64_t       owner;  // if it is in execution
-  int32_t       code;
-
+struct SExecTaskInfo {
+  STaskIdInfo           id;
+  uint32_t              status;
+  STimeWindow           window;
+  STaskCostInfo         cost;
+  int64_t               owner;  // if it is in execution
+  int32_t               code;
   int64_t               version;  // used for stream to record wal version
   SStreamTaskInfo       streamInfo;
   SSchemaInfo           schemaInfo;
@@ -171,7 +170,8 @@ typedef struct SExecTaskInfo {
   SSubplan*             pSubplan;
   struct SOperatorInfo* pRoot;
   SLocalFetch           localFetch;
-} SExecTaskInfo;
+  SArray*               pResultBlockList;// result block list
+};
 
 enum {
   OP_NOT_OPENED = 0x0,
diff --git a/source/libs/executor/src/executor.c b/source/libs/executor/src/executor.c
index 1aa9a3c61359cc3a0ad76df577c5ce3d6f061c8b..0163a389ef21e3ab8516a268bdb2701194cc2b89 100644
--- a/source/libs/executor/src/executor.c
+++ b/source/libs/executor/src/executor.c
@@ -536,7 +536,7 @@ int32_t qExecTaskOpt(qTaskInfo_t tinfo, SArray* pResList, uint64_t* useconds, bo
     memcpy(&pTaskInfo->localFetch, pLocal, sizeof(*pLocal));
   }
 
-  taosArrayClearEx(pResList, freeBlock);
+  taosArrayClear(pResList);
 
   int64_t curOwner = 0;
   if ((curOwner = atomic_val_compare_exchange_64(&pTaskInfo->owner, 0, threadId)) != 0) {
@@ -574,8 +574,20 @@ int32_t qExecTaskOpt(qTaskInfo_t tinfo, SArray* pResList, uint64_t* useconds, bo
 
   int64_t st = taosGetTimestampUs();
 
+  int32_t blockIndex = 0;
   while ((pRes = pTaskInfo->pRoot->fpSet.getNextFn(pTaskInfo->pRoot)) != NULL) {
-    SSDataBlock* p = createOneDataBlock(pRes, true);
+    SSDataBlock* p = NULL;
+    if (blockIndex >= taosArrayGetSize(pTaskInfo->pResultBlockList)) {
+      SSDataBlock* p1 = createOneDataBlock(pRes, true);
+      taosArrayPush(pTaskInfo->pResultBlockList, &p1);
+      p = p1;
+    } else {
+      p = *(SSDataBlock**) taosArrayGet(pTaskInfo->pResultBlockList, blockIndex);
+      copyDataBlock(p, pRes);
+    }
+
+    blockIndex += 1;
+
     current += p->info.rows;
     ASSERT(p->info.rows > 0);
     taosArrayPush(pResList, &p);
diff --git a/source/libs/executor/src/executorimpl.c b/source/libs/executor/src/executorimpl.c
index 709e981a1ff6bcb01a0f4765ec97eaf5c428c180..f16462268755d5e4936987f83d58d697bcdb5d92 100644
--- a/source/libs/executor/src/executorimpl.c
+++ b/source/libs/executor/src/executorimpl.c
@@ -2600,6 +2600,7 @@ static SExecTaskInfo* createExecTaskInfo(uint64_t queryId, uint64_t taskId, EOPT
   pTaskInfo->id.queryId = queryId;
   pTaskInfo->execModel = model;
   pTaskInfo->pTableInfoList = tableListCreate();
+  pTaskInfo->pResultBlockList = taosArrayInit(128, POINTER_BYTES);
 
   char* p = taosMemoryCalloc(1, 128);
   snprintf(p, 128, "TID:0x%" PRIx64 " QID:0x%" PRIx64, taskId, queryId);
@@ -3201,6 +3202,11 @@ _complete:
   return terrno;
 }
 
+static void freeBlock(void* pParam) {
+  SSDataBlock* pBlock = *(SSDataBlock**)pParam;
+  blockDataDestroy(pBlock);
+}
+
 void doDestroyTask(SExecTaskInfo* pTaskInfo) {
   qDebug("%s execTask is freed", GET_TASKID(pTaskInfo));
 
@@ -3213,6 +3219,7 @@ void doDestroyTask(SExecTaskInfo* pTaskInfo) {
     nodesDestroyNode((SNode*)pTaskInfo->pSubplan);
   }
 
+  taosArrayDestroyEx(pTaskInfo->pResultBlockList, freeBlock);
   taosMemoryFreeClear(pTaskInfo->sql);
   taosMemoryFreeClear(pTaskInfo->id.str);
   taosMemoryFreeClear(pTaskInfo);
diff --git a/source/libs/qworker/src/qworker.c b/source/libs/qworker/src/qworker.c
index a7cd3db82432f9e148ba02bfcc4e5faa02f8b119..2606556838435936e0525afdd524cd53e04f0772 100644
--- a/source/libs/qworker/src/qworker.c
+++ b/source/libs/qworker/src/qworker.c
@@ -18,11 +18,6 @@ SQWorkerMgmt gQwMgmt = {
     .qwNum = 0,
 };
 
-static void freeBlock(void *param) {
-  SSDataBlock *pBlock = *(SSDataBlock **)param;
-  blockDataDestroy(pBlock);
-}
-
 int32_t qwProcessHbLinkBroken(SQWorker *mgmt, SQWMsg *qwMsg, SSchedulerHbReq *req) {
   int32_t         code = 0;
   SSchedulerHbRsp rsp = {0};
@@ -193,7 +188,7 @@ int32_t qwExecTask(QW_FPARAMS_DEF, SQWTaskCtx *ctx, bool *queryStop) {
   }
 
 _return:
-  taosArrayDestroyEx(pResList, freeBlock);
+  taosArrayDestroy(pResList);
   QW_RET(code);
 }