blockUser table => _id,userId,blockedUserId
SELECT *
FROM User INNER JOIN
blockUser
on User.userid = blockUser.blockedUserId where blockUser.userId='user1' and User.userId <> blockUser.blockedUserId;
一个用户可以阻止多个用户。 我收到错误,请帮我纠正。
答案 0 :(得分:0)
Select * from user
left join blockUser on user.userid = blockUser.userid
where Not exists user.userid = blockUser.blockedUserID
GroupBy(User.user_id)
这是我能从你提供的内容中得到的全部内容