如何一次删除2个表

Question

我想使用WHERE department ='something'

一次删除2个表记录

我试试这个并没有用：

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

使用此声明解决了问题：

  

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

Answer 3

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