oracle数据库 delete join使用

用left join写

delete from users_branch LEFT JOIN users ON users_branch.users_branch_id =users.user_id IN(
SELECT user_id FROM users where
role_channel IN ('TSM','KAM' ,'MAM') 
and role_desc IN ('BIS','BFS')
);

等同于下面的sql

普通方法比较慢sql语句为

delete from users_branch where user_id in (
SELECT user_id FROM users where
role_channel IN ('TSM','KAM' ,'MAM') 
and role_desc IN ('BIS','BFS')
)
;