Question

我正在使用＆＃34执行查询;其中存在＆＃34;在MySql中使用一个表。它适用于SELECT *，但在我尝试执行DELETE而不是SELECT *时失败。

如何使用delete执行相同的查询？非常感谢提前！

select * from MyTable t1 where exists ( 
select * from MyTable t2 where t1.user_id = t2.user_id 
and t1.object_id <> t2.object_id and t2.role = "ADMIN")
and role = "ORG_MANAGER" 
and object_type = "type_b";

Answer 1

delete from MyTable t1 
where user_id in (
  select user_id 
  from MyTable t1 
  where exists ( 
    select * from MyTable t2 
    where t1.user_id = t2.user_id 
    and t1.object_id <> t2.object_id 
    and t2.role = "ADMIN")
  and role = "ORG_MANAGER" 
  and object_type = "type_b";
)

使用MySQL中的WHERE EXISTS删除查询

1 个答案: