Re: [gnome-db] GdaSqlBuiler: JOIN AS
- From: Murray Cumming <murrayc murrayc com>
- To: Vivien Malerba <vmalerba gmail com>
- Cc: gnome-db-list <gnome-db-list gnome org>
- Subject: Re: [gnome-db] GdaSqlBuiler: JOIN AS
- Date: Mon, 17 May 2010 14:39:44 +0200
On Mon, 2010-05-17 at 14:20 +0200, Vivien Malerba wrote:
> On 17 May 2010 10:07, Murray Cumming <murrayc murrayc com> wrote:
> > In Glom, I use the AS keyword with JOINS, to allow multiple joins with
> > the same table. A simple case looks like this, though it's unnecessary
> > in this particular example:
> >
> > SELECT "albums"."album_id", "albums"."name", "albums"."artist_id",
> > "relationship_artist"."name",
> > FROM "albums"
> > LEFT JOIN "artists"
> > AS "relationship_artist"
> > ON ("albums"."artist_id" = "relationship_artist"."artist_id")
> > WHERE "albums"."album_id" = 123
> >
> > (That might be an "alias", but I don't know if that's the right
> > terminology.)
> >
> > But I don't see how to do that with
> > gda_sql_builder_select_join_targets()
> > http://library.gnome.org/devel/libgda/unstable/GdaSqlBuilder.html#gda-sql-builder-select-join-targets
> >
>
> To do this you need to specify an alias when using the
> gda_sql_builder_select_add_target*() methods.
But that's for adding table targts, right? How would it know which join
the alias name is for?
--
murrayc murrayc com
www.murrayc.com
www.openismus.com
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