我是新来的Java世界。我有一个简单的查询问题:

set @catId := (select categoryId from Categories limit 1);

insert into Categories(CategoryId, Title, LeftValue, RightValue)

values(@catId, 'Test in', 1,2);

....

它只是失败,当我试图与mybatis运行它:

PersistenceException occured : ### Error updating database. Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'insert into Categories(CategoryId, Title, LeftValue, RightValue) values(' at line 2 ### The error may involve Category.create-Inline ### The error occurred while setting parameters ### Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'insert into Categories(CategoryId, Title, LeftValue, RightValue) values(' at line 2如果我删除这一行:

set @catId := (select categoryId from Categories limit 1);那么一切都很好。我究竟做错了什么? jdbc或mybatis有问题吗?如何使用mysql @variables和mybatis?有人有与mybatis一起使用MySql局部变量的例子吗?

Logo

魔乐社区(Modelers.cn) 是一个中立、公益的人工智能社区,提供人工智能工具、模型、数据的托管、展示与应用协同服务,为人工智能开发及爱好者搭建开放的学习交流平台。社区通过理事会方式运作,由全产业链共同建设、共同运营、共同享有,推动国产AI生态繁荣发展。

更多推荐