diff --git a/include/libs/function/functionMgt.h b/include/libs/function/functionMgt.h
index d9ae090058..7eca020371 100644
--- a/include/libs/function/functionMgt.h
+++ b/include/libs/function/functionMgt.h
@@ -177,9 +177,6 @@ bool fmIsDistExecFunc(int32_t funcId);
 bool fmIsForbidFillFunc(int32_t funcId);
 bool fmIsForbidStreamFunc(int32_t funcId);
 
-bool    fmNeedRewrite(int32_t funcId);
-int32_t fmRewriteFunc(SNode** pFunc);
-
 int32_t fmGetDistMethod(const SFunctionNode* pFunc, SFunctionNode** pPartialFunc, SFunctionNode** pMergeFunc);
 
 typedef enum EFuncDataRequired {
diff --git a/source/libs/function/inc/builtins.h b/source/libs/function/inc/builtins.h
index 792b875529..bc91875006 100644
--- a/source/libs/function/inc/builtins.h
+++ b/source/libs/function/inc/builtins.h
@@ -23,7 +23,6 @@ extern "C" {
 #include "functionMgtInt.h"
 
 typedef int32_t (*FTranslateFunc)(SFunctionNode* pFunc, char* pErrBuf, int32_t len);
-typedef int32_t (*FRewriteFunc)(SNode** pFunc);
 typedef EFuncDataRequired (*FFuncDataRequired)(SFunctionNode* pFunc, STimeWindow* pTimeWindow);
 
 typedef struct SBuiltinFuncDefinition {
@@ -31,7 +30,6 @@ typedef struct SBuiltinFuncDefinition {
   EFunctionType      type;
   uint64_t           classification;
   FTranslateFunc     translateFunc;
-  FRewriteFunc       rewriteFunc;
   FFuncDataRequired  dataRequiredFunc;
   FExecGetEnv        getEnvFunc;
   FExecInit          initFunc;
diff --git a/source/libs/function/src/builtins.c b/source/libs/function/src/builtins.c
index 4e288d5fbd..c826fbd88f 100644
--- a/source/libs/function/src/builtins.c
+++ b/source/libs/function/src/builtins.c
@@ -1387,49 +1387,6 @@ static bool getBlockDistFuncEnv(SFunctionNode* UNUSED_PARAM(pFunc), SFuncExecEnv
   return true;
 }
 
-static int32_t rewriteAvg(SNode** pFunc) {
-  SOperatorNode* pOper = (SOperatorNode*)nodesMakeNode(QUERY_NODE_OPERATOR);
-  if (NULL == pOper) {
-    return TSDB_CODE_OUT_OF_MEMORY;
-  }
-
-  SFunctionNode* pAvg = (SFunctionNode*)*pFunc;
-  pOper->node.resType = pAvg->node.resType;
-  strcpy(pOper->node.aliasName, pAvg->node.aliasName);
-  pOper->opType = OP_TYPE_DIV;
-  pOper->pLeft = nodesMakeNode(QUERY_NODE_FUNCTION);
-  pOper->pRight = nodesMakeNode(QUERY_NODE_FUNCTION);
-  if (NULL == pOper->pLeft || NULL == pOper->pRight) {
-    nodesDestroyNode((SNode*)pOper);
-    return TSDB_CODE_OUT_OF_MEMORY;
-  }
-
-  SFunctionNode* pSum = (SFunctionNode*)pOper->pLeft;
-  strcpy(pSum->functionName, "sum");
-  pSum->pParameterList = nodesCloneList(pAvg->pParameterList);
-  if (NULL == pSum->pParameterList) {
-    nodesDestroyNode((SNode*)pOper);
-    return TSDB_CODE_OUT_OF_MEMORY;
-  }
-  char    msgBuf[64] = {0};
-  int32_t code = fmGetFuncInfo(pSum, msgBuf, sizeof(msgBuf));
-  if (TSDB_CODE_SUCCESS == code) {
-    SFunctionNode* pCount = (SFunctionNode*)pOper->pRight;
-    strcpy(pCount->functionName, "count");
-    TSWAP(pCount->pParameterList, pAvg->pParameterList);
-    code = fmGetFuncInfo(pCount, msgBuf, sizeof(msgBuf));
-  }
-
-  if (TSDB_CODE_SUCCESS == code) {
-    nodesDestroyNode((SNode*)pAvg);
-    *pFunc = (SNode*)pOper;
-  } else {
-    nodesDestroyNode((SNode*)pOper);
-  }
-
-  return code;
-}
-
 // clang-format off
 const SBuiltinFuncDefinition funcMgtBuiltins[] = {
   {
@@ -1519,7 +1476,6 @@ const SBuiltinFuncDefinition funcMgtBuiltins[] = {
     .type = FUNCTION_TYPE_AVG,
     .classification = FUNC_MGT_AGG_FUNC,
     .translateFunc = translateInNumOutDou,
-    // .rewriteFunc  = rewriteAvg,
     .getEnvFunc   = getAvgFuncEnv,
     .initFunc     = avgFunctionSetup,
     .processFunc  = avgFunction,
diff --git a/source/libs/function/src/functionMgt.c b/source/libs/function/src/functionMgt.c
index 620fbbe130..e9c916034d 100644
--- a/source/libs/function/src/functionMgt.c
+++ b/source/libs/function/src/functionMgt.c
@@ -324,12 +324,3 @@ int32_t fmGetDistMethod(const SFunctionNode* pFunc, SFunctionNode** pPartialFunc
 
   return code;
 }
-
-bool fmNeedRewrite(int32_t funcId) {
-  if (fmIsUserDefinedFunc(funcId)) {
-    return false;
-  }
-  return NULL != funcMgtBuiltins[funcId].rewriteFunc;
-}
-
-int32_t fmRewriteFunc(SNode** pFunc) { return funcMgtBuiltins[((SFunctionNode*)*pFunc)->funcId].rewriteFunc(pFunc); }
diff --git a/source/libs/parser/src/parTranslater.c b/source/libs/parser/src/parTranslater.c
index 65e62c0d38..b33bfc186e 100644
--- a/source/libs/parser/src/parTranslater.c
+++ b/source/libs/parser/src/parTranslater.c
@@ -1076,32 +1076,29 @@ static void setFuncClassification(SSelectStmt* pSelect, SFunctionNode* pFunc) {
   }
 }
 
-static EDealRes translateFunction(STranslateContext* pCxt, SFunctionNode** pFunc) {
+static EDealRes translateFunction(STranslateContext* pCxt, SFunctionNode* pFunc) {
   SNode* pParam = NULL;
-  FOREACH(pParam, (*pFunc)->pParameterList) {
+  FOREACH(pParam, pFunc->pParameterList) {
     if (isMultiResFunc(pParam)) {
       return generateDealNodeErrMsg(pCxt, TSDB_CODE_PAR_WRONG_VALUE_TYPE, ((SExprNode*)pParam)->aliasName);
     }
   }
 
-  pCxt->errCode = getFuncInfo(pCxt, *pFunc);
+  pCxt->errCode = getFuncInfo(pCxt, pFunc);
   if (TSDB_CODE_SUCCESS == pCxt->errCode) {
-    pCxt->errCode = translateAggFunc(pCxt, *pFunc);
+    pCxt->errCode = translateAggFunc(pCxt, pFunc);
   }
   if (TSDB_CODE_SUCCESS == pCxt->errCode) {
-    pCxt->errCode = translateScanPseudoColumnFunc(pCxt, *pFunc);
+    pCxt->errCode = translateScanPseudoColumnFunc(pCxt, pFunc);
   }
   if (TSDB_CODE_SUCCESS == pCxt->errCode) {
-    pCxt->errCode = translateIndefiniteRowsFunc(pCxt, *pFunc);
+    pCxt->errCode = translateIndefiniteRowsFunc(pCxt, pFunc);
   }
   if (TSDB_CODE_SUCCESS == pCxt->errCode) {
-    pCxt->errCode = translateForbidFillFunc(pCxt, *pFunc);
+    pCxt->errCode = translateForbidFillFunc(pCxt, pFunc);
   }
   if (TSDB_CODE_SUCCESS == pCxt->errCode) {
-    setFuncClassification(pCxt->pCurrSelectStmt, *pFunc);
-  }
-  if (TSDB_CODE_SUCCESS == pCxt->errCode && fmNeedRewrite((*pFunc)->funcId)) {
-    pCxt->errCode = fmRewriteFunc((SNode**)pFunc);
+    setFuncClassification(pCxt->pCurrSelectStmt, pFunc);
   }
   return TSDB_CODE_SUCCESS == pCxt->errCode ? DEAL_RES_CONTINUE : DEAL_RES_ERROR;
 }
@@ -1126,7 +1123,7 @@ static EDealRes doTranslateExpr(SNode** pNode, void* pContext) {
     case QUERY_NODE_OPERATOR:
       return translateOperator(pCxt, (SOperatorNode**)pNode);
     case QUERY_NODE_FUNCTION:
-      return translateFunction(pCxt, (SFunctionNode**)pNode);
+      return translateFunction(pCxt, (SFunctionNode*)pNode);
     case QUERY_NODE_LOGIC_CONDITION:
       return translateLogicCond(pCxt, (SLogicConditionNode*)*pNode);
     case QUERY_NODE_TEMP_TABLE: