diff --git a/src/client/src/tscParseInsert.c b/src/client/src/tscParseInsert.c
index 19d537eb11a84ef7a5e64428b060a198f3497fb6..73337469b2b9a7ad696ba9a6dc24c734accd109a 100644
--- a/src/client/src/tscParseInsert.c
+++ b/src/client/src/tscParseInsert.c
@@ -1584,9 +1584,6 @@ int tsInsertInitialCheck(SSqlObj *pSql) {
   int32_t  index = 0;
   SSqlCmd *pCmd = &pSql->cmd;
 
-  SStrToken sToken = tStrGetToken(pSql->sqlstr, &index, false);
-  assert(sToken.type == TK_INSERT || sToken.type == TK_IMPORT);
-
   pCmd->count   = 0;
   pCmd->command = TSDB_SQL_INSERT;
   SInsertStatementParam* pInsertParam = &pCmd->insertParam;
@@ -1594,6 +1591,11 @@ int tsInsertInitialCheck(SSqlObj *pSql) {
   SQueryInfo *pQueryInfo = tscGetQueryInfoS(pCmd);
   TSDB_QUERY_SET_TYPE(pQueryInfo->type, TSDB_QUERY_TYPE_INSERT);
 
+  SStrToken sToken = tStrGetToken(pSql->sqlstr, &index, false);
+  if (sToken.type != TK_INSERT && sToken.type != TK_IMPORT) {
+    return tscSQLSyntaxErrMsg(pInsertParam->msg, NULL, sToken.z);
+  }
+
   sToken = tStrGetToken(pSql->sqlstr, &index, false);
   if (sToken.type != TK_INTO) {
     return tscSQLSyntaxErrMsg(pInsertParam->msg, "keyword INTO is expected", sToken.z);
diff --git a/tests/develop-test/2-query/TD-13246.py b/tests/develop-test/2-query/TD-13246.py
new file mode 100644
index 0000000000000000000000000000000000000000..e9675f8a0c99e8b528b13e77a05754b6d23e3d61
--- /dev/null
+++ b/tests/develop-test/2-query/TD-13246.py
@@ -0,0 +1,56 @@
+###################################################################
+#           Copyright (c) 2021 by TAOS Technologies, Inc.
+#                     All rights reserved.
+#
+#  This file is proprietary and confidential to TAOS Technologies.
+#  No part of this file may be reproduced, stored, transmitted,
+#  disclosed or used in any form or by any means other than as
+#  expressly provided by the written permission from Jianhui Tao
+#
+###################################################################
+
+# -*- coding: utf-8 -*-
+
+import sys
+from util.log import *
+from util.cases import *
+from util.sql import *
+
+
+class TDTestCase:
+    def caseDescription(self):
+        '''
+        case1<ganlin zhao>: [TD-13246] Coredump when parentheses appear before the insert_sql
+        '''
+        return
+
+    def init(self, conn, logSql):
+        tdLog.debug("start to execute %s" % __file__)
+        tdSql.init(conn.cursor(), logSql)
+        self._conn = conn
+
+    def run(self):
+        print("running {}".format(__file__))
+        tdSql.prepare()
+
+        tdSql.execute('create stable st(ts timestamp , value int) tags (ind int)')
+        tdSql.execute('create table  ctb using st tags(1)')
+        tdSql.execute('create table  tb (ts timestamp, value int)')
+        tdSql.query('insert into ctb values(now, 1)');
+        tdSql.query('insert into tb values(now, 1)');
+
+        tdSql.error('(insert into ctb values(now, 1)');
+        tdSql.error('(insert into tb values(now, 1)');
+        tdSql.error('(insert into ctb values');
+        tdSql.error('(insert into ctb');
+        tdSql.error('(insert into');
+        tdSql.error('(insert');
+        tdSql.error('(');
+
+    def stop(self):
+        tdSql.close()
+        tdLog.success("%s successfully executed" % __file__)
+
+
+tdCases.addWindows(__file__, TDTestCase())
+tdCases.addLinux(__file__, TDTestCase())
diff --git a/tests/develop-test/fulltest-query.sh b/tests/develop-test/fulltest-query.sh
index c91c592adfbee5b48b9cc0fac3fade70ff4a611c..f5523576401a2144083207f40e9430df846ffe14 100755
--- a/tests/develop-test/fulltest-query.sh
+++ b/tests/develop-test/fulltest-query.sh
@@ -7,3 +7,4 @@ python3 ./test.py -f 2-query/ts_2016.py
 python3 ./test.py -f 2-query/escape.py
 python3 ./test.py -f 2-query/function_mavg.py
 python3 ./test.py -f 2-query/func_compare.py
+python3 ./test.py -f 2-query/TD-13246.py