oralce切换mysql myabtis里记得切换方言,不然会出现 Every derived table must have its own alias 错误

这是忘记切换方言的时候oralce 切换到mysql 出现:Every derived table must have its own alias
此时就会报错

oralce 切换到mysql 出现:Every derived table must have its own alias

很明显rownum那个属于oralce里面的行号,mysql中并不存在;
我们把方言修改为mysql,就解决问题啦

oralce 切换到mysql 出现:Every derived table must have its own alias

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