sql语句拼接问题 在进行sql语句拼接时，需要在语句后加上空格，否则就会报错"select * from lesson a join tb_user b " + "on a.createId = b.user_id "+"where cid not in (select cid from joinedclass a join tb_user b on a.uid = b.user_id where uid=#{uid})... 数据库 2023-09-21 50 点赞 0 评论 75 浏览
