diff --git a/source/client/inc/clientInt.h b/source/client/inc/clientInt.h
index f815adfeaa..cf8b0babdd 100644
--- a/source/client/inc/clientInt.h
+++ b/source/client/inc/clientInt.h
@@ -46,7 +46,6 @@ extern "C" {
 
 #define ERROR_MSG_BUF_DEFAULT_SIZE 512
 #define HEARTBEAT_INTERVAL         1500  // ms
-#define SYNC_ON_TOP_OF_ASYNC       1
 
 enum {
   RES_TYPE__QUERY = 1,
@@ -271,9 +270,8 @@ void    doFreeReqResultInfo(SReqResultInfo* pResInfo);
 int32_t transferTableNameList(const char* tbList, int32_t acctId, char* dbName, SArray** pReq);
 void    syncCatalogFn(SMetaData* pResult, void* param, int32_t code);
 
-SRequestObj* execQuery(uint64_t connId, const char* sql, int sqlLen, bool validateOnly);
-TAOS_RES*    taosQueryImpl(TAOS* taos, const char* sql, bool validateOnly);
-void         taosAsyncQueryImpl(uint64_t connId, const char* sql, __taos_async_fn_t fp, void* param, bool validateOnly);
+TAOS_RES* taosQueryImpl(TAOS* taos, const char* sql, bool validateOnly);
+void      taosAsyncQueryImpl(uint64_t connId, const char* sql, __taos_async_fn_t fp, void* param, bool validateOnly);
 
 int32_t getVersion1BlockMetaSize(const char* p, int32_t numOfCols);
 
@@ -349,8 +347,6 @@ void processMsgFromServer(void* parent, SRpcMsg* pMsg, SEpSet* pEpSet);
 STscObj* taos_connect_internal(const char* ip, const char* user, const char* pass, const char* auth, const char* db,
                                uint16_t port, int connType);
 
-SRequestObj* launchQuery(uint64_t connId, const char* sql, int sqlLen, bool validateOnly, bool inRetry);
-
 int32_t parseSql(SRequestObj* pRequest, bool topicQuery, SQuery** pQuery, SStmtCallback* pStmtCb);
 
 int32_t getPlan(SRequestObj* pRequest, SQuery* pQuery, SQueryPlan** pPlan, SArray* pNodeList);
diff --git a/source/client/src/clientImpl.c b/source/client/src/clientImpl.c
index 0bf254e455..0c12d78c18 100644
--- a/source/client/src/clientImpl.c
+++ b/source/client/src/clientImpl.c
@@ -1013,28 +1013,6 @@ SRequestObj* launchQueryImpl(SRequestObj* pRequest, SQuery* pQuery, bool keepQue
   return pRequest;
 }
 
-SRequestObj* launchQuery(uint64_t connId, const char* sql, int sqlLen, bool validateOnly, bool inRetry) {
-  SRequestObj* pRequest = NULL;
-  SQuery*      pQuery = NULL;
-
-  int32_t code = buildRequest(connId, sql, sqlLen, NULL, validateOnly, &pRequest);
-  if (code != TSDB_CODE_SUCCESS) {
-    terrno = code;
-    return NULL;
-  }
-
-  code = parseSql(pRequest, false, &pQuery, NULL);
-  if (code != TSDB_CODE_SUCCESS) {
-    pRequest->code = code;
-    return pRequest;
-  }
-
-  pRequest->inRetry = inRetry;
-  pRequest->stableQuery = pQuery->stableQuery;
-
-  return launchQueryImpl(pRequest, pQuery, false, NULL);
-}
-
 static int32_t asyncExecSchQuery(SRequestObj* pRequest, SQuery* pQuery, SMetaData* pResultMeta,
                                  SSqlCallbackWrapper* pWrapper) {
   pRequest->type = pQuery->msgType;
@@ -1197,32 +1175,6 @@ int32_t removeMeta(STscObj* pTscObj, SArray* tbList) {
   return TSDB_CODE_SUCCESS;
 }
 
-//  todo remove it soon
-SRequestObj* execQuery(uint64_t connId, const char* sql, int sqlLen, bool validateOnly) {
-  SRequestObj* pRequest = NULL;
-  int32_t      retryNum = 0;
-  int32_t      code = 0;
-  bool         inRetry = false;
-
-  do {
-    destroyRequest(pRequest);
-    pRequest = launchQuery(connId, sql, sqlLen, validateOnly, inRetry);
-    if (pRequest == NULL || TSDB_CODE_SUCCESS == pRequest->code || !NEED_CLIENT_HANDLE_ERROR(pRequest->code)) {
-      break;
-    }
-
-    code = refreshMeta(pRequest->pTscObj, pRequest);
-    if (code) {
-      pRequest->code = code;
-      break;
-    }
-
-    inRetry = true;
-  } while (retryNum++ < REQUEST_TOTAL_EXEC_TIMES);
-
-  return pRequest;
-}
-
 int initEpSetFromCfg(const char* firstEp, const char* secondEp, SCorEpSet* pEpSet) {
   pEpSet->version = 0;
 
@@ -2291,7 +2243,6 @@ TAOS_RES* taosQueryImpl(TAOS* taos, const char* sql, bool validateOnly) {
     return NULL;
   }
 
-#if SYNC_ON_TOP_OF_ASYNC
   SSyncQueryParam* param = taosMemoryCalloc(1, sizeof(SSyncQueryParam));
   tsem_init(&param->sem, 0, 0);
 
@@ -2301,15 +2252,4 @@ TAOS_RES* taosQueryImpl(TAOS* taos, const char* sql, bool validateOnly) {
     param->pRequest->syncQuery = true;
   }
   return param->pRequest;
-#else
-  size_t sqlLen = strlen(sql);
-  if (sqlLen > (size_t)TSDB_MAX_ALLOWED_SQL_LEN) {
-    tscError("sql string exceeds max length:%d", TSDB_MAX_ALLOWED_SQL_LEN);
-    terrno = TSDB_CODE_TSC_EXCEED_SQL_LIMIT;
-    return NULL;
-  }
-
-  TAOS_RES* pRes = execQuery(*(int64_t*)taos, sql, sqlLen, validateOnly);
-  return pRes;
-#endif
 }
diff --git a/source/client/src/clientMain.c b/source/client/src/clientMain.c
index 8036e50545..b03576ff01 100644
--- a/source/client/src/clientMain.c
+++ b/source/client/src/clientMain.c
@@ -261,12 +261,7 @@ TAOS_ROW taos_fetch_row(TAOS_RES *res) {
       return NULL;
     }
 
-#if SYNC_ON_TOP_OF_ASYNC
     return doAsyncFetchRows(pRequest, true, true);
-#else
-    return doFetchRows(pRequest, true, true);
-#endif
-
   } else if (TD_RES_TMQ(res) || TD_RES_TMQ_METADATA(res)) {
     SMqRspObj      *msg = ((SMqRspObj *)res);
     SReqResultInfo *pResultInfo;
@@ -549,11 +544,7 @@ int taos_fetch_block_s(TAOS_RES *res, int *numOfRows, TAOS_ROW *rows) {
       return 0;
     }
 
-#if SYNC_ON_TOP_OF_ASYNC
     doAsyncFetchRows(pRequest, false, true);
-#else
-    doFetchRows(pRequest, true, true);
-#endif
 
     // TODO refactor
     SReqResultInfo *pResultInfo = &pRequest->body.resInfo;
@@ -601,11 +592,7 @@ int taos_fetch_raw_block(TAOS_RES *res, int *numOfRows, void **pData) {
     return 0;
   }
 
-#if SYNC_ON_TOP_OF_ASYNC
   doAsyncFetchRows(pRequest, false, false);
-#else
-  doFetchRows(pRequest, false, false);
-#endif
 
   SReqResultInfo *pResultInfo = &pRequest->body.resInfo;
 
@@ -989,7 +976,7 @@ const void *taos_get_raw_block(TAOS_RES *res) {
   return pRequest->body.resInfo.pData;
 }
 
-int taos_get_db_route_info(TAOS* taos, const char* db, TAOS_DB_ROUTE_INFO* dbInfo) {
+int taos_get_db_route_info(TAOS *taos, const char *db, TAOS_DB_ROUTE_INFO *dbInfo) {
   if (NULL == taos) {
     terrno = TSDB_CODE_TSC_DISCONNECTED;
     return terrno;
@@ -1001,16 +988,16 @@ int taos_get_db_route_info(TAOS* taos, const char* db, TAOS_DB_ROUTE_INFO* dbInf
     return terrno;
   }
 
-  int64_t       connId = *(int64_t *)taos;
-  SRequestObj  *pRequest = NULL;
-  char *sql = "taos_get_db_route_info";
-  int32_t code = buildRequest(connId, sql, strlen(sql), NULL, false, &pRequest);
+  int64_t      connId = *(int64_t *)taos;
+  SRequestObj *pRequest = NULL;
+  char        *sql = "taos_get_db_route_info";
+  int32_t      code = buildRequest(connId, sql, strlen(sql), NULL, false, &pRequest);
   if (code != TSDB_CODE_SUCCESS) {
     terrno = code;
     return terrno;
   }
 
-  STscObj *pTscObj = pRequest->pTscObj;
+  STscObj  *pTscObj = pRequest->pTscObj;
   SCatalog *pCtg = NULL;
   code = catalogGetHandle(pTscObj->pAppInfo->clusterId, &pCtg);
   if (code != TSDB_CODE_SUCCESS) {
@@ -1024,7 +1011,7 @@ int taos_get_db_route_info(TAOS* taos, const char* db, TAOS_DB_ROUTE_INFO* dbInf
 
   char dbFName[TSDB_DB_FNAME_LEN] = {0};
   snprintf(dbFName, sizeof(dbFName), "%d.%s", pTscObj->acctId, db);
-  
+
   code = catalogGetDBVgInfo(pCtg, &conn, dbFName, dbInfo);
   if (code) {
     goto _return;
@@ -1038,7 +1025,7 @@ _return:
   return code;
 }
 
-int taos_get_table_vgId(TAOS* taos, const char* db, const char* table, int* vgId) {
+int taos_get_table_vgId(TAOS *taos, const char *db, const char *table, int *vgId) {
   if (NULL == taos) {
     terrno = TSDB_CODE_TSC_DISCONNECTED;
     return terrno;
@@ -1050,15 +1037,15 @@ int taos_get_table_vgId(TAOS* taos, const char* db, const char* table, int* vgId
     return terrno;
   }
 
-  int64_t       connId = *(int64_t *)taos;
-  SRequestObj  *pRequest = NULL;
-  char *sql = "taos_get_table_vgId";
-  int32_t code = buildRequest(connId, sql, strlen(sql), NULL, false, &pRequest);
+  int64_t      connId = *(int64_t *)taos;
+  SRequestObj *pRequest = NULL;
+  char        *sql = "taos_get_table_vgId";
+  int32_t      code = buildRequest(connId, sql, strlen(sql), NULL, false, &pRequest);
   if (code != TSDB_CODE_SUCCESS) {
     return terrno;
   }
 
-  STscObj *pTscObj = pRequest->pTscObj;
+  STscObj  *pTscObj = pRequest->pTscObj;
   SCatalog *pCtg = NULL;
   code = catalogGetHandle(pTscObj->pAppInfo->clusterId, &pCtg);
   if (code != TSDB_CODE_SUCCESS) {