Select distinct values from 1 column

sql sql-server sql-server-2005 distinct
Parm picture Parm · Dec 17, 2009 · Viewed 83.6k times · Source

I want to select distinct values from only one column (the BoekingPlaatsId column) with this query: 

SELECT MAX(BoekingPlaatsId), BewonerId, Naam, VoorNaam
FROM table
GROUP BY BewonerId, Naam, VoorNaam

How do I do that in SQL Server?

Answer

doza picture doza · Dec 17, 2009

DISTINCT should work if you just want the user names:

SELECT DISTINCT BewonerId, Naam, Voornaam
FROM TBL

but if you need the minimum ID values, group by the names...

SELECT MIN(BoekingPlaatsId), MIN(BewonerId), Naam, Voornaam
FROM TBL
GROUP BY Naam, Voornaam

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