Select distinct values from 1 column

Question

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

SELECT MAX(BoekingPlaatsId), BewonerId, Naam, VoorNaam
F         


        

Answer 1

I ran into a similar problem and for me the solution was using the GROUP BY clause. So basically, I grouped all the blogs with same title as one group.

Syntax:

SELECT post_title, post_link
FROM blogs
WHERE [ conditions ]
GROUP BY post_title
ORDER BY post_title;

Maybe you are grouping multiple columns

Answer 2

Sounds like you want something like

select distinct(BewonerId), Naam, Voornaam from table_name

Answer 3

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