Case From In Statement Aggregate

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Case From In Statement Aggregate

Author

Topic

mgonda
Starting Member

29 Posts

Posted - 2011-09-26 : 12:42:15

Is there a way to create a case statement from and aggregate function contained within the same select statement? Assume I have a table with books in it, and I have multiple books of the same title, but with different costs. I want to average prices for a distinct title, and then write a case that will create a column that says if the book is cheap, regular or expensive.

I know the following code doesn't work, but I think it may get my intentions across better than my words. What would be the best way to do this?

SELECT DISTINCT Title, AVG(Price) AS AvgPrice, Analysis = case
WHEN AvgPrice < 25 THEN 'Cheap'
WHEN AvgPrice BETWEEN 25 AND 50 THEN 'Regular'
ELSE 'Expensive' END
FROM TblBook

visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2011-09-26 : 12:55:49

[code]
SELECT Title,AvgPrice,
Analysis = case
WHEN AvgPrice < 25 THEN 'Cheap'
WHEN AvgPrice BETWEEN 25 AND 50 THEN 'Regular'
ELSE 'Expensive'
END
FROM
(
SELECT Title, AVG(Price) AS AvgPrice
FROM TblBook
GROUP BY Title
)t
[/code]

------------------------------------------------------------------------------------------------------
SQL Server MVP
http://visakhm.blogspot.com/

mgonda
Starting Member

29 Posts

Posted - 2011-09-26 : 13:36:41

Thanks, I knew it had to be somethings simple like that, but it just wasn't coming to my head.

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