diff --git a/docs/en/12-taos-sql/14-stream.md b/docs/en/12-taos-sql/14-stream.md
index d99c5bdae4344670d5143b7962b76464e5c2d697..43c49c03cd84eb741a5088c93bbb1571270e480b 100644
--- a/docs/en/12-taos-sql/14-stream.md
+++ b/docs/en/12-taos-sql/14-stream.md
@@ -147,7 +147,7 @@ In both of these methods, configuring the watermark is essential for obtaining a
 
 ## Supported functions
 
-All [scalar functions](../function/#scalar-functions) are available in stream processing. All [System information functions](../function/#system-information-functions) are <b>not</b> allowed in stream processing. All [Aggregate functions](../function/#aggregate-functions)  and  [Selection functions](../function/#selection-functions) are available in stream processing, except the followings:
+All [scalar functions](../function/#scalar-functions) are available in stream processing. All [Aggregate functions](../function/#aggregate-functions)  and  [Selection functions](../function/#selection-functions) are available in stream processing, except the followings:
   - [leastsquares](../function/#leastsquares)
   - [percentile](../function/#percentile)
   - [top](../function/#top)
diff --git a/docs/examples/rust/nativeexample/examples/subscribe_demo.rs b/docs/examples/rust/nativeexample/examples/subscribe_demo.rs
index 7551ad46b139f70c3e966fc3bfaf8e6cb58b17f8..d54bb60e937d8a9756dafb00a754260f432c6777 100644
--- a/docs/examples/rust/nativeexample/examples/subscribe_demo.rs
+++ b/docs/examples/rust/nativeexample/examples/subscribe_demo.rs
@@ -45,7 +45,7 @@ async fn main() -> anyhow::Result<()> {
     taos.exec_many([
         format!("DROP TOPIC IF EXISTS tmq_meters"),
         format!("DROP DATABASE IF EXISTS `{db}`"),
-        format!("CREATE DATABASE `{db}`"),
+        format!("CREATE DATABASE `{db}` WAL_RETENTION_PERIOD 3600"),
         format!("USE `{db}`"),
         // create super table
         format!("CREATE TABLE `meters` (`ts` TIMESTAMP, `current` FLOAT, `voltage` INT, `phase` FLOAT) TAGS (`groupid` INT, `location` BINARY(24))"),
diff --git a/docs/zh/12-taos-sql/14-stream.md b/docs/zh/12-taos-sql/14-stream.md
index d90db3cab01e2bca17f00fd8540f4f2dd2e03cdc..634f50356d5898f1b000c24f3c2a7968a49cc07c 100644
--- a/docs/zh/12-taos-sql/14-stream.md
+++ b/docs/zh/12-taos-sql/14-stream.md
@@ -227,7 +227,7 @@ T = 最新事件时间 - DELETE_MARK
 ## 流式计算支持的函数
 
 1. 所有的 [单行函数](../function/#单行函数) 均可用于流计算。
-2. 以下 19 个聚合/选择函数 <b>不能</b> 应用在创建流计算的 SQL 语句，[系统信息函数](../function/#系统信息函数) 也不能用于流计算中。此外的其他类型的函数均可用于流计算。
+2. 以下 19 个聚合/选择函数 <b>不能</b> 应用在创建流计算的 SQL 语句。此外的其他类型的函数均可用于流计算。
 
 - [leastsquares](../function/#leastsquares)
 - [percentile](../function/#percentile)
diff --git a/source/dnode/mgmt/mgmt_vnode/src/vmWorker.c b/source/dnode/mgmt/mgmt_vnode/src/vmWorker.c
index a7c4b2e70e13155d955fb2fd8d4862fc6725b2ea..ef4a2b52bb2ff685dba27ee87818d290b0490c48 100644
--- a/source/dnode/mgmt/mgmt_vnode/src/vmWorker.c
+++ b/source/dnode/mgmt/mgmt_vnode/src/vmWorker.c
@@ -60,7 +60,7 @@ static void vmProcessMgmtQueue(SQueueInfo *pInfo, SRpcMsg *pMsg) {
   if (IsReq(pMsg)) {
     if (code != 0) {
       if (terrno != 0) code = terrno;
-      dGError("msg:%p, failed to process since %s, type:%s", pMsg, terrstr(code), TMSG_INFO(pMsg->msgType));
+      dGError("msg:%p, failed to process since %s, type:%s", pMsg, tstrerror(code), TMSG_INFO(pMsg->msgType));
     }
     vmSendRsp(pMsg, code);
   }
diff --git a/source/dnode/mnode/impl/inc/mndDef.h b/source/dnode/mnode/impl/inc/mndDef.h
index f547ce025d67d5e04441699b2e6b48eb3efd52e2..fbdfc4b3604d742756738d4e81552c48d9e2cb6b 100644
--- a/source/dnode/mnode/impl/inc/mndDef.h
+++ b/source/dnode/mnode/impl/inc/mndDef.h
@@ -118,7 +118,7 @@ typedef enum {
 } ETrnPolicy;
 
 typedef enum {
-  TRN_EXEC_PRARLLEL = 0,
+  TRN_EXEC_PARALLEL = 0,
   TRN_EXEC_SERIAL = 1,
 } ETrnExec;
 
@@ -177,6 +177,7 @@ typedef struct {
   SArray*     pRpcArray;
   SRWLatch    lockRpcArray;
   int64_t     mTraceId;
+  TdThreadMutex    mutex;
 } STrans;
 
 typedef struct {
diff --git a/source/dnode/mnode/impl/inc/mndTrans.h b/source/dnode/mnode/impl/inc/mndTrans.h
index 057e3efbbcabe42d43c6030973707e371ccf4fd1..03434573c4f3b10ab971039fb4d71637b7d1dfa7 100644
--- a/source/dnode/mnode/impl/inc/mndTrans.h
+++ b/source/dnode/mnode/impl/inc/mndTrans.h
@@ -76,6 +76,7 @@ void    mndTransSetRpcRsp(STrans *pTrans, void *pCont, int32_t contLen);
 void    mndTransSetCb(STrans *pTrans, ETrnFunc startFunc, ETrnFunc stopFunc, void *param, int32_t paramLen);
 void    mndTransSetDbName(STrans *pTrans, const char *dbname, const char *stbname);
 void    mndTransSetSerial(STrans *pTrans);
+void    mndTransSetParallel(STrans *pTrans);
 void    mndTransSetOper(STrans *pTrans, EOperType oper);
 int32_t mndTrancCheckConflict(SMnode *pMnode, STrans *pTrans);
 
diff --git a/source/dnode/mnode/impl/src/mndTrans.c b/source/dnode/mnode/impl/src/mndTrans.c
index 106eea031384a93641c002200ab0c084f53fc76a..cfb5bef9d0163a8bded942726d7a16715ec2fcc0 100644
--- a/source/dnode/mnode/impl/src/mndTrans.c
+++ b/source/dnode/mnode/impl/src/mndTrans.c
@@ -546,6 +546,7 @@ static void mndTransDropData(STrans *pTrans) {
     pTrans->param = NULL;
     pTrans->paramLen = 0;
   }
+  (void)taosThreadMutexDestroy(&pTrans->mutex);
 }
 
 static int32_t mndTransActionDelete(SSdb *pSdb, STrans *pTrans, bool callFunc) {
@@ -643,7 +644,7 @@ STrans *mndTransCreate(SMnode *pMnode, ETrnPolicy policy, ETrnConflct conflict,
   pTrans->stage = TRN_STAGE_PREPARE;
   pTrans->policy = policy;
   pTrans->conflict = conflict;
-  pTrans->exec = TRN_EXEC_PRARLLEL;
+  pTrans->exec = TRN_EXEC_PARALLEL;
   pTrans->createdTime = taosGetTimestampMs();
   pTrans->redoActions = taosArrayInit(TRANS_ARRAY_SIZE, sizeof(STransAction));
   pTrans->undoActions = taosArrayInit(TRANS_ARRAY_SIZE, sizeof(STransAction));
@@ -651,6 +652,7 @@ STrans *mndTransCreate(SMnode *pMnode, ETrnPolicy policy, ETrnConflct conflict,
   pTrans->pRpcArray = taosArrayInit(1, sizeof(SRpcHandleInfo));
   pTrans->mTraceId = pReq ? TRACE_GET_ROOTID(&pReq->info.traceId) : 0;
   taosInitRWLatch(&pTrans->lockRpcArray);
+  taosThreadMutexInit(&pTrans->mutex, NULL);
 
   if (pTrans->redoActions == NULL || pTrans->undoActions == NULL || pTrans->commitActions == NULL ||
       pTrans->pRpcArray == NULL) {
@@ -793,6 +795,8 @@ void mndTransSetDbName(STrans *pTrans, const char *dbname, const char *stbname)
 
 void mndTransSetSerial(STrans *pTrans) { pTrans->exec = TRN_EXEC_SERIAL; }
 
+void mndTransSetParallel(STrans *pTrans) { pTrans->exec = TRN_EXEC_PARALLEL; }
+
 void mndTransSetOper(STrans *pTrans, EOperType oper) { pTrans->oper = oper; }
 
 static int32_t mndTransSync(SMnode *pMnode, STrans *pTrans) {
@@ -1307,7 +1311,13 @@ static int32_t mndTransExecuteRedoActionsSerial(SMnode *pMnode, STrans *pTrans)
   int32_t code = 0;
   int32_t numOfActions = taosArrayGetSize(pTrans->redoActions);
   if (numOfActions == 0) return code;
-  if (pTrans->redoActionPos >= numOfActions) return code;
+
+  taosThreadMutexLock(&pTrans->mutex);
+
+  if (pTrans->redoActionPos >= numOfActions) {
+    taosThreadMutexUnlock(&pTrans->mutex);
+    return code;
+  }
 
   mInfo("trans:%d, execute %d actions serial, current redoAction:%d", pTrans->id, numOfActions, pTrans->redoActionPos);
 
@@ -1377,6 +1387,8 @@ static int32_t mndTransExecuteRedoActionsSerial(SMnode *pMnode, STrans *pTrans)
     }
   }
 
+  taosThreadMutexUnlock(&pTrans->mutex);
+
   return code;
 }
 
diff --git a/source/dnode/mnode/impl/src/mndVgroup.c b/source/dnode/mnode/impl/src/mndVgroup.c
index 46a1aa4b83356b7255d89047428acc9682dfa353..72a7ed77a48c73ccbfc22a024508ec109c3f3735 100644
--- a/source/dnode/mnode/impl/src/mndVgroup.c
+++ b/source/dnode/mnode/impl/src/mndVgroup.c
@@ -1917,7 +1917,7 @@ int32_t mndAddVgroupBalanceToTrans(SMnode *pMnode, SVgObj *pVgroup, STrans *pTra
   int32_t vgid = pVgroup->vgId;
   int8_t replica = pVgroup->replica;
 
- if(pVgroup->replica <= 1) {
+  if(pVgroup->replica <= 1) {
     mInfo("trans:%d, vgid:%d no need to balance, replica:%d", pTrans->id, vgid, replica);
     return -1;
   }
@@ -1951,6 +1951,19 @@ int32_t mndAddVgroupBalanceToTrans(SMnode *pMnode, SVgObj *pVgroup, STrans *pTra
       return -1;
     }
 
+    SDbObj *pDb = mndAcquireDb(pMnode, pVgroup->dbName);
+    if (pDb == NULL) {
+      mError("trans:%d, vgid:%d failed to be balanced to dnode:%d, because db not exist", pTrans->id, vgid, dnodeId);
+      return -1;
+    }
+
+    if (mndAddAlterVnodeConfirmAction(pMnode, pTrans, pDb, pVgroup) != 0) {
+      mError("trans:%d, vgid:%d failed to be balanced to dnode:%d", pTrans->id, vgid, dnodeId);
+      return -1;
+    }
+
+    mndReleaseDb(pMnode, pDb);
+
     SSdbRaw *pRaw = mndVgroupActionEncode(pVgroup);
     if (pRaw == NULL) {
       mError("trans:%d, vgid:%d failed to encode action to dnode:%d", pTrans->id, vgid, dnodeId);
@@ -1965,7 +1978,8 @@ int32_t mndAddVgroupBalanceToTrans(SMnode *pMnode, SVgObj *pVgroup, STrans *pTra
   }
   else
   {
-    mInfo("trans:%d, vgid:%d cant be balanced to dnode:%d, exist:%d, online:%d", pTrans->id, vgid, dnodeId, exist, online);
+    mInfo("trans:%d, vgid:%d cant be balanced to dnode:%d, exist:%d, online:%d", 
+                              pTrans->id, vgid, dnodeId, exist, online);
   }
 
   return 0;
@@ -2103,6 +2117,18 @@ static int32_t mndAddAdjustVnodeHashRangeAction(SMnode *pMnode, STrans *pTrans,
   return 0;
 }
 
+static int32_t mndTransCommitVgStatus(STrans *pTrans, SVgObj *pVg, ESdbStatus vgStatus) {
+  SSdbRaw *pRaw = mndVgroupActionEncode(pVg);
+  if (pRaw == NULL) goto _err;
+  if (mndTransAppendCommitlog(pTrans, pRaw) != 0) goto _err;
+  (void)sdbSetRawStatus(pRaw, vgStatus);
+  pRaw = NULL;
+  return 0;
+_err:
+  sdbFreeRaw(pRaw);
+  return -1;
+}
+
 int32_t mndSplitVgroup(SMnode *pMnode, SRpcMsg *pReq, SDbObj *pDb, SVgObj *pVgroup) {
   int32_t  code = -1;
   STrans  *pTrans = NULL;
@@ -2181,28 +2207,16 @@ int32_t mndSplitVgroup(SMnode *pMnode, SRpcMsg *pReq, SDbObj *pDb, SVgObj *pVgro
   if (pDb->cfg.replications != newVg1.replica) {
     if (mndBuildAlterVgroupAction(pMnode, pTrans, pDb, pDb, &newVg1, pArray) != 0) goto _OVER;
   } else {
-    pRaw = mndVgroupActionEncode(&newVg1);
-    if (pRaw == NULL) goto _OVER;
-    if (mndTransAppendCommitlog(pTrans, pRaw) != 0) goto _OVER;
-    (void)sdbSetRawStatus(pRaw, SDB_STATUS_READY);
-    pRaw = NULL;
+    if (mndTransCommitVgStatus(pTrans, &newVg1, SDB_STATUS_READY) < 0) goto _OVER;
   }
 
   if (pDb->cfg.replications != newVg2.replica) {
     if (mndBuildAlterVgroupAction(pMnode, pTrans, pDb, pDb, &newVg2, pArray) != 0) goto _OVER;
   } else {
-    pRaw = mndVgroupActionEncode(&newVg2);
-    if (pRaw == NULL) goto _OVER;
-    if (mndTransAppendCommitlog(pTrans, pRaw) != 0) goto _OVER;
-    (void)sdbSetRawStatus(pRaw, SDB_STATUS_READY);
-    pRaw = NULL;
+    if (mndTransCommitVgStatus(pTrans, &newVg2, SDB_STATUS_READY) < 0) goto _OVER;
   }
 
-  pRaw = mndVgroupActionEncode(pVgroup);
-  if (pRaw == NULL) goto _OVER;
-  if (mndTransAppendCommitlog(pTrans, pRaw) != 0) goto _OVER;
-  (void)sdbSetRawStatus(pRaw, SDB_STATUS_DROPPED);
-  pRaw = NULL;
+  if (mndTransCommitVgStatus(pTrans, pVgroup, SDB_STATUS_DROPPED) < 0) goto _OVER;
 
   memcpy(&dbObj, pDb, sizeof(SDbObj));
   if (dbObj.cfg.pRetensions != NULL) {
@@ -2229,42 +2243,13 @@ _OVER:
   return code;
 }
 
-static int32_t mndProcessSplitVgroupMsg(SRpcMsg *pReq) {
-  SMnode *pMnode = pReq->info.node;
-  int32_t code = -1;
-  SVgObj *pVgroup = NULL;
-  SDbObj *pDb = NULL;
-
-  SSplitVgroupReq req = {0};
-  if (tDeserializeSSplitVgroupReq(pReq->pCont, pReq->contLen, &req) != 0) {
-    terrno = TSDB_CODE_INVALID_MSG;
-    goto _OVER;
-  }
-
-  mInfo("vgId:%d, start to split", req.vgId);
-  if (mndCheckOperPrivilege(pMnode, pReq->info.conn.user, MND_OPER_SPLIT_VGROUP) != 0) {
-    goto _OVER;
-  }
-
-  pVgroup = mndAcquireVgroup(pMnode, req.vgId);
-  if (pVgroup == NULL) goto _OVER;
-
-  pDb = mndAcquireDb(pMnode, pVgroup->dbName);
-  if (pDb == NULL) goto _OVER;
+extern int32_t mndProcessSplitVgroupMsgImp(SRpcMsg *pReq);
 
-  code = mndSplitVgroup(pMnode, pReq, pDb, pVgroup);
-  if (code != 0) {
-    mError("vgId:%d, failed to start to split vgroup since %s, db:%s", pVgroup->vgId, terrstr(), pDb->name);
-    goto _OVER;
-  }
-
-  mInfo("vgId:%d, split vgroup started successfully. db:%s", pVgroup->vgId, pDb->name);
+static int32_t mndProcessSplitVgroupMsg(SRpcMsg *pReq) { return mndProcessSplitVgroupMsgImp(pReq); }
 
-_OVER:
-  mndReleaseVgroup(pMnode, pVgroup);
-  mndReleaseDb(pMnode, pDb);
-  return code;
-}
+#ifndef TD_ENTERPRISE
+int32_t mndProcessSplitVgroupMsgImp(SRpcMsg *pReq) { return 0; }
+#endif
 
 static int32_t mndSetBalanceVgroupInfoToTrans(SMnode *pMnode, STrans *pTrans, SDbObj *pDb, SVgObj *pVgroup,
                                               SDnodeObj *pSrc, SDnodeObj *pDst) {
diff --git a/source/libs/parser/src/parTranslater.c b/source/libs/parser/src/parTranslater.c
index b4b499a789a333815c75a43a32ec15f38bc70997..6545c33a27d0c0d5abd252a119e8fb139c4b5bb7 100644
--- a/source/libs/parser/src/parTranslater.c
+++ b/source/libs/parser/src/parTranslater.c
@@ -2289,6 +2289,25 @@ static int32_t checkAggColCoexist(STranslateContext* pCxt, SSelectStmt* pSelect)
   return TSDB_CODE_SUCCESS;
 }
 
+static int32_t checkHavingGroupBy(STranslateContext* pCxt, SSelectStmt* pSelect) {
+  int32_t code = TSDB_CODE_SUCCESS;
+  if (NULL == getGroupByList(pCxt) && NULL == pSelect->pPartitionByList && NULL == pSelect->pWindow) {
+    return code;
+  }  
+  if (NULL != pSelect->pHaving) {
+    code = checkExprForGroupBy(pCxt, &pSelect->pHaving);
+  }
+/*
+  if (TSDB_CODE_SUCCESS == code && NULL != pSelect->pProjectionList) {
+    code = checkExprListForGroupBy(pCxt, pSelect, pSelect->pProjectionList);
+  }
+  if (TSDB_CODE_SUCCESS == code && NULL != pSelect->pOrderByList) {
+    code = checkExprListForGroupBy(pCxt, pSelect, pSelect->pOrderByList);
+  }
+*/  
+  return code;
+}
+
 static int32_t checkWindowFuncCoexist(STranslateContext* pCxt, SSelectStmt* pSelect) {
   if (NULL == pSelect->pWindow) {
     return TSDB_CODE_SUCCESS;
@@ -3024,7 +3043,7 @@ static int32_t translateSelectList(STranslateContext* pCxt, SSelectStmt* pSelect
   }
   if (TSDB_CODE_SUCCESS == code) {
     code = checkExprListForGroupBy(pCxt, pSelect, pSelect->pProjectionList);
-  }
+  }  
   if (TSDB_CODE_SUCCESS == code) {
     code = translateFillValues(pCxt, pSelect);
   }
@@ -3041,9 +3060,6 @@ static int32_t translateHaving(STranslateContext* pCxt, SSelectStmt* pSelect) {
   }
   pCxt->currClause = SQL_CLAUSE_HAVING;
   int32_t code = translateExpr(pCxt, &pSelect->pHaving);
-  if (TSDB_CODE_SUCCESS == code && (NULL != pSelect->pGroupByList || NULL != pSelect->pWindow)) {
-    code = checkExprForGroupBy(pCxt, &pSelect->pHaving);
-  }
   return code;
 }
 
@@ -3626,6 +3642,9 @@ static int32_t translateSelectFrom(STranslateContext* pCxt, SSelectStmt* pSelect
   if (TSDB_CODE_SUCCESS == code) {
     code = translateSelectList(pCxt, pSelect);
   }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = checkHavingGroupBy(pCxt, pSelect);
+  }
   if (TSDB_CODE_SUCCESS == code) {
     code = translateOrderBy(pCxt, pSelect);
   }
diff --git a/source/libs/parser/test/parSelectTest.cpp b/source/libs/parser/test/parSelectTest.cpp
index ec6c69ea8ded78443ba9803c7099faafaaf8765a..2d8ce55b72152a474f142634875f2c3e8201729b 100644
--- a/source/libs/parser/test/parSelectTest.cpp
+++ b/source/libs/parser/test/parSelectTest.cpp
@@ -239,6 +239,19 @@ TEST_F(ParserSelectTest, groupBySemanticCheck) {
   run("SELECT COUNT(*) cnt, c2 FROM t1 WHERE c1 > 0 GROUP BY c1", TSDB_CODE_PAR_GROUPBY_LACK_EXPRESSION);
 }
 
+TEST_F(ParserSelectTest, havingCheck) {
+  useDb("root", "test");
+
+  run("select tbname,count(*) from st1 partition by tbname having c1>0", TSDB_CODE_PAR_INVALID_OPTR_USAGE);
+
+  run("select tbname,count(*) from st1 group by tbname having c1>0", TSDB_CODE_PAR_GROUPBY_LACK_EXPRESSION);
+
+  run("select max(c1) from st1 group by tbname having c1>0");
+
+  run("select max(c1) from st1 partition by tbname having c1>0");
+}
+
+
 TEST_F(ParserSelectTest, orderBy) {
   useDb("root", "test");
 
diff --git a/source/libs/planner/src/planLogicCreater.c b/source/libs/planner/src/planLogicCreater.c
index 6544898be9ff389cf441d8824ef06b235fd7cc35..d1011cbf3a93847d239e96ecd9504a7be086dd91 100644
--- a/source/libs/planner/src/planLogicCreater.c
+++ b/source/libs/planner/src/planLogicCreater.c
@@ -1070,7 +1070,7 @@ static int32_t createProjectLogicNode(SLogicPlanContext* pCxt, SSelectStmt* pSel
 
   TSWAP(pProject->node.pLimit, pSelect->pLimit);
   TSWAP(pProject->node.pSlimit, pSelect->pSlimit);
-  pProject->ignoreGroupId = pSelect->isSubquery ? true : (NULL == pSelect->pPartitionByList);
+  pProject->ignoreGroupId = (pSelect->isSubquery && NULL == pProject->node.pLimit && NULL == pProject->node.pSlimit) ? true : (NULL == pSelect->pPartitionByList);
   pProject->node.groupAction =
       (!pSelect->isSubquery && pCxt->pPlanCxt->streamQuery) ? GROUP_ACTION_KEEP : GROUP_ACTION_CLEAR;
   pProject->node.requireDataOrder = DATA_ORDER_LEVEL_NONE;
diff --git a/source/libs/planner/src/planOptimizer.c b/source/libs/planner/src/planOptimizer.c
index 4f8b57de5fd1d75d0faae8df5a5a2a2e08108b4b..5cb3591984d1d49177699ba2173f624678b36a22 100644
--- a/source/libs/planner/src/planOptimizer.c
+++ b/source/libs/planner/src/planOptimizer.c
@@ -2351,6 +2351,17 @@ static EDealRes mergeProjectionsExpr(SNode** pNode, void* pContext) {
   return DEAL_RES_CONTINUE;
 }
 
+static int32_t mergeProjectionsLogicNode(SLogicNode* pDstNode, SLogicNode* pSrcNode) {
+  SProjectLogicNode *pDstPro = (SProjectLogicNode*)pDstNode;
+  SProjectLogicNode *pSrcPro = (SProjectLogicNode*)pSrcNode;
+
+  if (!pSrcPro->ignoreGroupId) {
+    pDstPro->ignoreGroupId = pSrcPro->ignoreGroupId;
+  }
+
+  return TSDB_CODE_SUCCESS;
+}
+
 static int32_t mergeProjectsOptimizeImpl(SOptimizeContext* pCxt, SLogicSubplan* pLogicSubplan, SLogicNode* pSelfNode) {
   SLogicNode* pChild = (SLogicNode*)nodesListGetNode(pSelfNode->pChildren, 0);
 
@@ -2360,8 +2371,11 @@ static int32_t mergeProjectsOptimizeImpl(SOptimizeContext* pCxt, SLogicSubplan*
 
   if (TSDB_CODE_SUCCESS == code) {
     if (1 == LIST_LENGTH(pChild->pChildren)) {
-      SLogicNode* pGrandChild = (SLogicNode*)nodesListGetNode(pChild->pChildren, 0);
-      code = replaceLogicNode(pLogicSubplan, pChild, pGrandChild);
+      code = mergeProjectionsLogicNode(pSelfNode, pChild);
+      if (TSDB_CODE_SUCCESS == code) {
+        SLogicNode* pGrandChild = (SLogicNode*)nodesListGetNode(pChild->pChildren, 0);
+        code = replaceLogicNode(pLogicSubplan, pChild, pGrandChild);
+      }
     } else {  // no grand child
       NODES_CLEAR_LIST(pSelfNode->pChildren);
     }