Re: Joining several rows into only one

On Nov 28, 2012, at 1:33 PM, JORGE MALDONADO wrote:

> I have a SELECT statement that gives me a result like this:
>
> SONG ARTIST
> -----------------------------------
> Song1 Artist1
> Song1 Artist2
> Song1 Artist3
> Song2 Artist2
> Song3 Artist4
> Song4 Artist1
> Song5 Artist4
>
> As you can see, the same song may belong to more than one artist, and this is fine. What I would like to do is NOT to get several rows, one for each different artist, but to join all of the artists in one column and display only one row.
> Is this possible?

Hi Jorge,

Try the array_agg function:

SELECT song, array_agg(artist)
FROM table
GROUP BY song;

Best,

Jonathan