Mark-101232 (10/1/2013)
dwain.c (9/30/2013)
Mark-101232 (9/30/2013)
WITH CategoriesWanted([Category]) AS (SELECT [Category]
FROM ( VALUES (3),(6)) x([Category])
)
SELECT [Project]
FROM [dbo].[Project_Category]
WHERE [Category] IN (SELECT [Category] FROM CategoriesWanted)
GROUP BY [Project]
HAVING COUNT(DISTINCT [Category])=(SELECT COUNT(*) FROM CategoriesWanted);
Mark,
I don't think you need to COUNT DISTINCT Category within Project as Project, Category is the primary key (IGNORE_DUP_KEY = OFF).
Yep, you're right. Nice one.
And sorry for not saying initially that otherwise I thought the query you suggested was an excellent solution for the problem the OP posted.
My thought question: Have you ever been told that your query runs too fast?
My advice:
INDEXing a poor-performing query is like putting sugar on cat food. Yeah, it probably tastes better but are you sure you want to eat it?
The path of least resistance can be a slippery slope. Take care that fixing your fixes of fixes doesn't snowball and end up costing you more than fixing the root cause would have in the first place.
Need to UNPIVOT? Why not CROSS APPLY VALUES instead?[/url]
Since random numbers are too important to be left to chance, let's generate some![/url]
Learn to understand recursive CTEs by example.[/url]
[url url=http://www.sqlservercentral.com/articles/St