Postgresql WITH 语句多次删除

【问题标题】：Postgresql WITH statement multiple deletesPostgresql WITH 语句多次删除
【发布时间】：2020-07-08 17:11:10
【问题描述】：

我可以在 Postgresql 中做到这一点吗？

with userToDelete as (
    select userid from users where condition;
) (
    delete from table1 where user_id = userToDelete;
    delete from table2 where userid = userToDelete;
    delete from table3 where user_id = userToDelete;
);

我看了，但什么也没找到。谢谢。

【问题讨论】：

标签： postgresql with-statement

【解决方案1】：

您需要多个 CTE：

with userToDelete as (
  select userid 
  from users 
  where condition
), t1 as (
  delete from table1 
  where user_id in (select userid from userToDelete)
), t2 as (
  delete from table2 
  where userid in (select userid from userToDelete)
)
delete from table3 
where user_id in (select userid from userToDelete);

注意只有一个; 来结束整个语句。

【讨论】：