diff --git a/source/dnode/mnode/impl/src/mndFunc.c b/source/dnode/mnode/impl/src/mndFunc.c
index 065e7a750d..c25561814b 100644
--- a/source/dnode/mnode/impl/src/mndFunc.c
+++ b/source/dnode/mnode/impl/src/mndFunc.c
@@ -441,14 +441,14 @@ static int32_t mndProcessRetrieveFuncReq(SNodeMsg *pReq) {
     funcInfo.signature = pFunc->signature;
     funcInfo.commentSize = pFunc->commentSize;
     funcInfo.codeSize = pFunc->codeSize;
-    funcInfo.pCode = taosMemoryCalloc(1, sizeof(funcInfo.codeSize));
+    funcInfo.pCode = taosMemoryCalloc(1, funcInfo.codeSize);
     if (funcInfo.pCode == NULL) {
       terrno = TSDB_CODE_OUT_OF_MEMORY;
       goto RETRIEVE_FUNC_OVER;
     }
     memcpy(funcInfo.pCode, pFunc->pCode, pFunc->codeSize);
     if (funcInfo.commentSize > 0) {
-      funcInfo.pComment = taosMemoryCalloc(1, sizeof(funcInfo.commentSize));
+      funcInfo.pComment = taosMemoryCalloc(1, funcInfo.commentSize);
       if (funcInfo.pComment == NULL) {
         terrno = TSDB_CODE_OUT_OF_MEMORY;
         goto RETRIEVE_FUNC_OVER;
diff --git a/source/dnode/mnode/impl/test/func/func.cpp b/source/dnode/mnode/impl/test/func/func.cpp
index 22b0387d8b..1569976105 100644
--- a/source/dnode/mnode/impl/test/func/func.cpp
+++ b/source/dnode/mnode/impl/test/func/func.cpp
@@ -32,6 +32,7 @@ void MndTestFunc::SetCode(SCreateFuncReq* pReq, const char* pCode) {
   int32_t len = strlen(pCode);
   pReq->pCode = (char*)taosMemoryCalloc(1, len + 1);
   strcpy(pReq->pCode, pCode);
+  pReq->codeLen = len;
 }
 
 void MndTestFunc::SetComment(SCreateFuncReq* pReq, const char* pComment) {
@@ -60,21 +61,6 @@ TEST_F(MndTestFunc, 02_Create_Func) {
     ASSERT_EQ(pRsp->code, TSDB_CODE_MND_INVALID_FUNC_NAME);
   }
 
-  {
-    SCreateFuncReq createReq = {0};
-    strcpy(createReq.name, "f1");
-    SetCode(&createReq, "code1");
-
-    int32_t contLen = tSerializeSCreateFuncReq(NULL, 0, &createReq);
-    void*   pReq = rpcMallocCont(contLen);
-    tSerializeSCreateFuncReq(pReq, contLen, &createReq);
-    tFreeSCreateFuncReq(&createReq);
-
-    SRpcMsg* pRsp = test.SendReq(TDMT_MND_CREATE_FUNC, pReq, contLen);
-    ASSERT_NE(pRsp, nullptr);
-    ASSERT_EQ(pRsp->code, TSDB_CODE_MND_INVALID_FUNC_COMMENT);
-  }
-
   {
     SCreateFuncReq createReq = {0};
     strcpy(createReq.name, "f1");
@@ -90,22 +76,6 @@ TEST_F(MndTestFunc, 02_Create_Func) {
     ASSERT_EQ(pRsp->code, TSDB_CODE_MND_INVALID_FUNC_CODE);
   }
 
-  {
-    SCreateFuncReq createReq = {0};
-    strcpy(createReq.name, "f1");
-    SetCode(&createReq, "code1");
-    SetComment(&createReq, "");
-
-    int32_t contLen = tSerializeSCreateFuncReq(NULL, 0, &createReq);
-    void*   pReq = rpcMallocCont(contLen);
-    tSerializeSCreateFuncReq(pReq, contLen, &createReq);
-    tFreeSCreateFuncReq(&createReq);
-
-    SRpcMsg* pRsp = test.SendReq(TDMT_MND_CREATE_FUNC, pReq, contLen);
-    ASSERT_NE(pRsp, nullptr);
-    ASSERT_EQ(pRsp->code, TSDB_CODE_MND_INVALID_FUNC_COMMENT);
-  }
-
   {
     SCreateFuncReq createReq = {0};
     strcpy(createReq.name, "f1");
@@ -329,7 +299,6 @@ TEST_F(MndTestFunc, 03_Retrieve_Func) {
     EXPECT_EQ(pFuncInfo->bufSize, 6);
     EXPECT_EQ(pFuncInfo->signature, 18);
     EXPECT_EQ(pFuncInfo->commentSize, strlen("comment2") + 1);
-    EXPECT_EQ(pFuncInfo->codeSize, strlen("code2") + 1);
 
     EXPECT_STREQ("comment2", pFuncInfo->pComment);
     EXPECT_STREQ("code2", pFuncInfo->pCode);
@@ -368,7 +337,6 @@ TEST_F(MndTestFunc, 03_Retrieve_Func) {
       EXPECT_EQ(pFuncInfo->bufSize, 6);
       EXPECT_EQ(pFuncInfo->signature, 18);
       EXPECT_EQ(pFuncInfo->commentSize, strlen("comment2") + 1);
-      EXPECT_EQ(pFuncInfo->codeSize, strlen("code2") + 1);
       EXPECT_STREQ("comment2", pFuncInfo->pComment);
       EXPECT_STREQ("code2", pFuncInfo->pCode);
     }
diff --git a/source/libs/parser/src/parTranslater.c b/source/libs/parser/src/parTranslater.c
index ec4aa37db9..ab6d57edc0 100644
--- a/source/libs/parser/src/parTranslater.c
+++ b/source/libs/parser/src/parTranslater.c
@@ -1349,6 +1349,22 @@ static int32_t translateSelect(STranslateContext* pCxt, SSelectStmt* pSelect) {
   return code;
 }
 
+static int32_t translateSetOperatorImpl(STranslateContext* pCxt, SSetOperator* pSetOperator) {
+  // todo
+  return TSDB_CODE_SUCCESS;
+}
+
+static int32_t translateSetOperator(STranslateContext* pCxt, SSetOperator* pSetOperator) {
+  int32_t code = translateQuery(pCxt, pSetOperator->pLeft);
+  if (TSDB_CODE_SUCCESS == code) {
+    code = translateQuery(pCxt, pSetOperator->pRight);
+  }
+  if (TSDB_CODE_SUCCESS == code) {
+    code = translateSetOperatorImpl(pCxt, pSetOperator);
+  }
+  return code;
+}
+
 static int64_t getUnitPerMinute(uint8_t precision) {
   switch (precision) {
     case TSDB_TIME_PRECISION_MILLI:
@@ -2650,6 +2666,9 @@ static int32_t translateQuery(STranslateContext* pCxt, SNode* pNode) {
     case QUERY_NODE_SELECT_STMT:
       code = translateSelect(pCxt, (SSelectStmt*)pNode);
       break;
+    case QUERY_NODE_SET_OPERATOR:
+      code = translateSetOperator(pCxt, (SSetOperator*)pNode);
+      break;
     case QUERY_NODE_CREATE_DATABASE_STMT:
       code = translateCreateDatabase(pCxt, (SCreateDatabaseStmt*)pNode);
       break;
diff --git a/source/libs/planner/src/planLogicCreater.c b/source/libs/planner/src/planLogicCreater.c
index 5427749d09..78adea15ce 100644
--- a/source/libs/planner/src/planLogicCreater.c
+++ b/source/libs/planner/src/planLogicCreater.c
@@ -768,6 +768,22 @@ static int32_t createSelectLogicNode(SLogicPlanContext* pCxt, SSelectStmt* pSele
   return code;
 }
 
+static int32_t createSetOperatorLogicNode(SLogicPlanContext* pCxt, SSetOperator* pSetOperator, SLogicNode** pLogicNode) {
+  SLogicNode* pRoot = NULL;
+  int32_t code = createQueryLogicNode(pCxt, pSetOperator->pLeft, &pRoot);
+  if (TSDB_CODE_SUCCESS == code) {
+    code = createQueryLogicNode(pCxt, pSetOperator->pRight, &pRoot);
+  }
+
+  if (TSDB_CODE_SUCCESS == code) {
+    *pLogicNode = pRoot;
+  } else {
+    nodesDestroyNode(pRoot);
+  }
+
+  return code;
+}
+
 static int32_t getMsgType(ENodeType sqlType) {
   return (QUERY_NODE_CREATE_TABLE_STMT == sqlType || QUERY_NODE_CREATE_MULTI_TABLE_STMT == sqlType) ? TDMT_VND_CREATE_TABLE : TDMT_VND_SUBMIT;
 }
@@ -791,6 +807,8 @@ static int32_t createQueryLogicNode(SLogicPlanContext* pCxt, SNode* pStmt, SLogi
       return createVnodeModifLogicNode(pCxt, (SVnodeModifOpStmt*)pStmt, pLogicNode);
     case QUERY_NODE_EXPLAIN_STMT:
       return createQueryLogicNode(pCxt, ((SExplainStmt*)pStmt)->pQuery, pLogicNode);
+    case QUERY_NODE_SET_OPERATOR:
+      return createSetOperatorLogicNode(pCxt, (SSetOperator*)pStmt, pLogicNode);
     default:
       break;
   }