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我正在建立一所学校的网站,我需要一个没有2位父母签名的用户列表。这将是SQL查询:LINQ TO SQL:有计数(table_id)<2
SQL
SELECT * FROM users
WHERE user_rol = 4
AND user_id IN
(SELECT parent_user_id FROM user_parents
GROUP BY parent_user_id
HAVING COUNT(parent_user_id) < 2);
我试图使用LINQ进行相同的查询,但我不知道如何使用LINQ拥有。这一直是我的近距离尝试。
SUB-查询IN
List<long> usersWithTwoParentsIds = (from currentStudents in contexto.user_parents
select currentStudents.parent_user_id).ToList<long>();
--HELP! having count(currentStudents.parent_user_id) < 2
QUERY
List<vw_user> userList = (from currentStudents in contexto.vw_user
where !usersWithTwoParentsIds.Contains(currentStudents.user_id)
&& currentStudents.group_id == groupID select currentStudents).ToList<vw_user>()
任何人能提供线索?谢谢:)
是塔的完美谢谢:) – 2011-05-15 17:54:26