选择最大日期，然后在WHERE子句中使用它

Question

I'm sure there is an easy solution to this, but I am wracking my brain here trying to figure it out. Sometimes an extra set of eyes can save the day!

SELECT S.StoreId, MAX(AL.ActivityDate) AS LastActivity FROM Stores S
INNER JOIN dbo.ActivityLog AL ON AL.StoreID = S.StoreID
WHERE S.StoreID IN (SELECT StoreID FROM Stores WHERE Status = 2)
AND AL.ActivityDate < DATEADD(DAY, -180, GETDATE())
GROUP BY S.StoreID
ORDER BY LastActivity

My goal: Pull all the stores that have a MAX Activity Date older than 6 months (180 days). This bit of code doesn't seem to be doing the trick... Any ideas?

Thanks!

Answer 1

I think you can do what you want with group by and having :

select al.StoreId, MAX(al.ActivityDate) AS LastActivity
from dbo.ActivityLog al
group by al.StoreId
having MAX(al.ActivityDate) < DATEADD(day, -100, getdate());