在同一语句中从两个表中删除SQL

Question

我将从2个表中删除数据。我会这样做：

DELETE FROM dc_mail_users u, dc_mail_user_data d WHERE u.i_id_pk = 3 AND d.i_id_ut = u.i_id_pk 

但是，这将返回一个SQL语法错误。我如何解决这个问题SQL AS语句？就像下面的例子。

SELECT first_name.last_name AS name WHERE name="John Doe" 

Answer 1

delete u, d 
FROM dc_mail_users u 
join dc_mail_user_data d 
on d.i_id_ut = u.i_id_pk 
and u.i_id_pk = 3 

Answer 2

DELETE u, d 
FROM dc_mail_users u 
INNER JOIN dc_mail_user_data d 
    ON d.i_id_ut = u.i_id_pk 
WHERE u.i_id_pk = 3 

Answer 3

如果添加表的别名，一个例子SQL Fiddle