问题描述
我试图让所有在表中拥有超过 1 条记录的参与者,其中至少有一条记录的 IsCurrent = 0 和 IsActive = 1
I'm trying to get all participants that have more than 1 record in the table where at lease one of those records has IsCurrent = 0 and IsActive = 1
这是我目前所拥有的,但它不起作用:
This is what I have so far, but it's not working:
SELECT ParticipantId FROM Contact WHERE (IsCurrent = 0 AND IsActive = 1 AND ContactTypeId = 1) Group by ParticipantId Having COUNT(ParticipantId) > 1
此查询带回与该描述匹配的记录,但我需要与该描述匹配的所有记录,还有更多.
This query brings back a record that matches that description, but I need all of the records that match that description, there are more.
推荐答案
您可以使用 存在:
SELECT ParticipantId FROM Contact WHERE EXISTS ( SELECT 1 FROM Contact c2 WHERE c2.ParticipantID = c.ParticipantId AND ContactTypeId = 1 GROUP BY ParticipantID HAVING COUNT(*) > 1 AND COUNT(CASE WHEN IsCurrent = 0 AND IsActive = 1 THEN 1 END) >= 1 );