Re: RE: pl/pgsql and returning rows

From: "Bruce Momjian" <pgman@candle.pha.pa.us>

> MY book in chapter 18 has a Pl/PgSQL function called change_statename
> that does insert/update automatically.
>
> http://www.postgresql.org/docs/awbook.html


The functions called get_details though, so I assumed it's supposed to be
shorthand for a join.

- Richard

> > As a workaround, you can insert your row into an existing table, then
> > retrieve it from there later.  I think you need to enumerate all of the
> > fields, as in 'INSERT INTO table VALUES (ret.field1,
> > ret.field2,...ret.fieldn);'.  At least, I haven't succeeded any other
way.
> > Messy, but the best method available right now.
> >
> > > -----Original Message-----
> > > From: Richard Huxton [SMTP:dev@archonet.com]
> > > Sent: Tuesday, March 27, 2001 2:27 AM
> > > To: pgsql-sql@postgresql.org; wade
> > > Subject: Re: pl/pgsql and returning rows
> > >
> > > From: "wade" <wade@wavefire.com>
> > >
> > > > create function get_details(int4) returns details as '
> > > > declare
> > > >   ret details%ROWTYPE;
> > > >   site_rec    record;
> > > >   cntct       contacts%ROWTYPE;
> > > > begin
> > > >   select into site_rec  * sites_table where id = $1 limit 1;
> > > >   select into cntct * from contacts where id = site_rec.contact;
> > > >
> > > > -- and then i populate rows of ret.
> > > >   ret.name := cntct.name;
> > > >   ret.ip := site_rec.ip;
> > > > .
> > > > .
> > > > .
> > > >   return ret;
> > > > end;
> > > > ' language 'plpgsql';
> > > >
> > > > now the problem is when is when I do a:
> > > >   SELECT get_details(55);
> > > > all i get is a single oid-looking return value:
> > > >  get_details
> > > > -------------
> > > >  136295592
> > > > (1 row)
> > >
> > > Sorry - you can't return a row from a function at the present time
(except
> > > for trigger functions which are special) although I believe this is on
the
> > > todo list for a later 7.x release.
> > >
> > > Just from the top of my head, you might try a view with a select rule,
> > > although I'm not completely clear what your objectives are.
> > >
> > > - Richard Huxton
> > >
> > >
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>
> --
>   Bruce Momjian                        |  http://candle.pha.pa.us
>   pgman@candle.pha.pa.us               |  (610) 853-3000
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