Re: [GENERAL] trouble with sum

select sum(p.price), p.product_id, s.sid from ...
where ...
group by p.product_id, s.sid

"group by" clause is the key. You cannot use non-aggregate fields
in question like this, where some fields are aggregates, without grouping
them.
Sometimes i'd like to use syntax you presented, but in postgreSQL
it isn't possible :( And it makes some sense...

At 13:29 99-03-19 -0500, you wrote:
>select sum(P.price), P.product_id, S.sid, S.product_id from products P,
>shoppers S
>where S.sid='0319199910043810.3.0.12' and P.product_id= S.product_id;
>
>i've used similar commands like this one with other engines with no
>trouble
>
>what do i need to do to get it to work with postgre
>

Marcin Grondecki
ojciec(at)mtl(dot)pl
+48(604)468725
***** I'm not a complete idiot, some parts are missing...