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 Filtering data by getting only distinct columns		  New Topic  Reply to Topic
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Apples
Posting Yak Master

146 Posts
Posted - 01/11/2013 :  15:48:15  Show Profile  Reply with Quote
I have a query

SELECT *
FROM tblMyTable

that returns these results:

ID | TypeID | Name
----------------------------------
1 | 1 | AAA
2 | 1 | BBB
3 | 2 | CCC
4 | 4 | DDD
5 | 5 | EEE
6 | 5 | FFF
7 | 5 | GGG

I'd like to filter the results so that there are only distinct TypeIds, so that the results returned are:

ID | TypeID | Name
----------------------------------
1 | 1 | AAA
3 | 2 | CCC
4 | 4 | DDD
5 | 5 | EEE

How can I change my query to do that?

adry_fab
Starting Member

1 Posts
Posted - 01/11/2013 :  16:38:36  Show Profile  Reply with Quote
SELECT
MIN(ID),
TypeID,
min(Name)
FROM tblMyTable
GROUP BY TypeID
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visakh16
Very Important crosS Applying yaK Herder

India
47157 Posts
Posted - 01/12/2013 :  03:27:31  Show Profile  Reply with Quote 

SELECT ID,TypeID,Name
FROM
(
SELECT ROW_NUMBER() OVER (PARTITION BY TypeID ORDER BY ID) AS Seq,*
FROM table
)t
WHERE Seq=1


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