mysql - 如何一次删除两张表

Question

我想使用 WHERE department = 'something' 一次删除 2 个表记录

我试试这个，它没有用：

DELETE FROM departments, categories 
WHERE department.department = 'something' 
AND categories.department = 'something';

Answer 1

DELETE FROM departments INNER JOIN categories
    WHERE departments.department = categories.department 
        and department.department = 'something'

Answer 2

使用此语句解决的问题：

删除部门。*，类别。* 来自部门、类别 WHERE 部门.department = '{$dept_name}' AND categories.department = '{$dept_name}'

Answer 3

DELETE FROM departments
JOIN categories ON departments.department = categories.department
WHERE department.department = 'something'`