【 使用环境 】生产环境
【 OB or 其他组件 】OB
【 使用版本 】5.7.25-OceanBase_CE-v4.1.0.0
【问题描述】start with查询报语法错误
【复现路径】 ```
SELECT emp_id, mgr_id, position, level FROM emp
START WITH mgr_id IS NULL CONNECT BY PRIOR emp_id = mgr_id;
【问题现象及影响】
执行官方给定的start with语句，报语法错误，疑似start with关键词解析失败
【附件】
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your OceanBase version for the right syntax to use near 'WITH mgr_id IS NULL CONNECT BY PRIOR emp_id = mgr_id' at line 1
