Re: problems with this wiew

On Tue, 04 Dec 2001 22:31:21 GMT
"Aasmund Midttun Godal" <postgresql(at)envisity(dot)com> wrote:

> Well if you have spelled view "wiew" - that may be part of your problem,
>
> sincerely,
>
> Aasmund.
> On Tue, 4 Dec 2001 10:07:17 -0800 (PST), Stephan Szabo <sszabo(at)megazone23(dot)bigpanda(dot)com> wrote:
> > On Tue, 4 Dec 2001, Manuel Trujillo wrote:
> >
> >
> > I'm probably missing something obvious, but
> > in any case the schema for tables and views
> > involved (preferably in create statements),
> > your PostgresQL version and the actual error
> > message you're getting would help us.
> >
> Aasmund Midttun Godal
>
> aasmund(at)godal(dot)com - http://www.godal.com/
> +47 40 45 20 46
>

I would think his problem is cased by how to use aliases, at least, D is
apparently unnecessary. Since I don't know the definitions of his tables,
I can't affirm what type of an error happened. But if his tables are
correctly defined, his error is probably:
ERROR: Column reference "***" is ambiguous.

If so, the vague columns reference of his query ought to be adjusted
with explicitly using aliases: B, C, and E (e.g. see below).

select E.gallery_id, E.multimedia_id
from view_multimedia_file A
inner join (select B.gallery_id,
B.multimedia_id,
B.element_type_id,
C.result_type_id,
C.subevent_id,
C.subevent_type_id,
C.event_id,
C.championship_id,
C.championship_type_id,
C.season_id,
C.c_language_id as language_id
from view_gallery B
inner join (select gallery_id as c_gallery_id,
result_type_id,
subevent_id,
subevent_type_id,
event_id,
championship_id,
championship_type_id,
season_id,
language_id as c_language_id
from view_gallery_result_type
) C
on (B.gallery_id = C.c_gallery_id)
) E
on (A.mm_id = E.multimedia_id)
;

Regards,
Masaru Sugawara