Using Coalesce and Group by in a view or query

Posted on 2014-09-25
Last Modified: 2014-09-25
Hi Guys,

Could someone please help me use a coalesce function in a query or view with a group by to produce the below results. I know how to do this without group by in a stored proc (basically for a single ID) but would like this in a view. The code I use for my proc is
CREATE PROCEDURE [dbo].[spGetAnimals]
@ID int
SELECT @listStr = COALESCE(@listStr+',' , '') + Animal
FROM dbo.tblAnimal
SELECT @listStr AS Animals;

Open in new window

My ideal result in a view not a proc would be as below:

ID      Animal
1      Cat
2      Cat
3      Cat
1      Dog
2      Dog
1      Hamster
3      Hamster
Result      Animals
1      Cat, Dog, Hamster
2      Cat, Dog
3      Cat, Hamster

Thank you for your help in advance?
Question by:databarracks
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LVL 24

Expert Comment

by:Phillip Burton
ID: 40343538
Why do you want to do it without using GROUP BY?

Author Comment

ID: 40343542
Hi Phillip,

Well I simply assumed I needed group by to get my desired result. If there is another way, then please kindly show me?
LVL 24

Accepted Solution

Phillip Burton earned 500 total points
ID: 40343549
How about this:

select distinct U.ID,
substring((select ', '+T.Animal as [text()]
		   from tblAnimal T
		   Where T.ID = U.ID
		   for XML PATH('')),3,1000) [Animals]
from tblAnimal U

Open in new window


Author Comment

ID: 40343551
Hi Phillip,

That is genius:) Works wonderfully and is super quick too.

Many thanks again for your help on this query as you did with my last request. I really appreciate your help on these queries.


Author Closing Comment

ID: 40343556
Very, very good solution and would like to thank Phillip for his help as he is very helpful, concise and patient. Well done Phillip you are great

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