select employee1.name as employee from employee
employee1,employee employee2 where employee1.managerId=employee2.id and
employee1.salary>employee2.salary;
这里给同一张表取别名的方法是,
select 列名 as 新列名 from 表名 新表名1,表名 新表名2;
如果name重复出现,想要在多个name中只保留一个,则在表名前面加distinct;
select distinct employee1.salary as employee from employeer
employee1,employeer employee2 where employee1.id!=employee2.id and
employee1.salary=employee2.salary ;