Re:

jan(dot)bajerski(at)viterra(dot)pl writes:

> Hello,
> I have following problem with PostgreSQL 6.5.3, I haven't possiblity
> to check it on 7.0 and I want to know is it possible to run such query:
>
> SELECT k.pic, id_g, id_k, count(*)
> FROM kart k, pictues p
> WHERE k.pic = p.pic
> GROUP BY k.pic
>
> PICTURES(pic,id_g,id_k)
> KART (pic,email,mess,date)
>
> I've got answer from Postgres
> "Illegal attributes or non-group column"
>
> Is it error in query or in parser ?

You need to have all non-aggragated columns in the GROUP BY:

SELECT k.pic, id_g, id_k, count(*)
FROM kart k, pictues p
WHERE k.pic = p.pic
GROUP BY k.pic, id_g, id_k

Tomas