Question

The problem: I need to find all active [GiftPledges] that have the last three [GiftDetails] have a zero amount.

SELECT gp.PledgeId FROM GiftPledge gp       INNER JOIN GiftDetail gd ON gp.PledgeId = gd.PledgeId       WHERE gp.PledgeStatus = 'A'       GROUP BY PledgeId       HAVING COUNT(PledgeId) >= 3 

Now, I have all my [GiftPledges] that have at least three [GiftDetails].

SELECT TOP 3 gdi.Amt FROM GiftDetail gdi       INNER JOIN GiftHeader ghi ON gdi.GiftRef = ghi.GiftRef       WHERE gdi.PledgeId = gp.PledgeId       ORDER BY ghi.GDate DESC 

This gives me the three most recent [GiftDetails] associated with a given [GiftPledge]. The problem is that I don’t know how to sum the second query and have it be a part of the WHERE clause in the first query.

I found this article about ‘Top n per Group’ and that seems like the direction I need to be headed, but I’m not sure I’m on the right track.

Any help, clarifications or suggestions would be greatly appreciated.

Answer 1

SELECT gp.PledgeId FROM GiftPledge gp       INNER JOIN GiftDetail gd ON gp.PledgeId = gd.PledgeId       WHERE gp.PledgeStatus = 'A'       GROUP BY PledgeId       HAVING COUNT(PledgeId) >= 3  AND GP.PledgeID in ( SELECT PledgeID From ( SELECT TOP 3 gp.PledgeID, gdi.Amt  FROM GiftDetail gdi       INNER JOIN GiftHeader ghi ON gdi.GiftRef = ghi.GiftRef       WHERE gdi.PledgeId = gp.PledgeId       ORDER BY ghi.GDate DESC ) x_amt  Group By PledgeID Having SUM(AMT) ) x_sum = 0 

something like that anyway.