mysql - 错误1093(HY000): You can't specify target table 'employee_salary' for update in FROM clause

Question

Delete from employee_salary
where emp_id in(
          select emp_id from
          employee_salary 
          group by emp_id,project,salary 
          having count(*)>1
);
ERROR 1093 (HY000): You can't specify target table 'employee_salary' for update in FROM clause

如何解决这个问题以及为什么这个查询没有运行？

Answer 1

试试这个:

Delete from employee_salary
where emp_id in(
         select * from (
          select emp_id from
          employee_salary 
          group by emp_id,project,salary 
          having count(*)>1 ) 
        as alias
)

我正在更改结果集的名称，以便它可以正常工作。