Question

我想从几个表中删除行。我的确切意图在下面的伪SQL语句中描述，

delete from users where oid={user_oid};
login_infos_oid = select login_infos_oid from users_login_infos where users_oid={user_oid};
delete from users_login_infos where users_oid={user_oid};
delete from password_infos where login_infos_oid={login_infos_oid};
delete from login_infos where oid={login_infos_oid};

users_login_infos表有2列users_oid和login_infos_oid，并且加入users和login_infos表。在交易中，如何在Slick 3.x中很好地解决这个问题？感谢。

Answer 1

我认为这不是一个好的解决方案，但目前就是这样，

val userQuery = slickUsers.filter(_.username === username)
val userLoginInfoQuery = slickUserLoginInfos.filter(_.userOid in userQuery.map(_.oid))
val loginInfoQuery = slickLoginInfos.filter(_.oid in userLoginInfoQuery.map(_.loginInfoOid))
val passwordInfoQuery = slickPasswordInfos.filter(_.loginInfoOID in userLoginInfoQuery.map(_.loginInfoOid))

db.run((loginInfoQuery.delete andThen
  passwordInfoQuery.delete andThen
  userLoginInfoQuery.delete andThen
  userQuery.delete).transactionally)

Slick 3.0：从事务中的多个表中删除行

1 个答案: