Re: embedded SQL cursos declare fails

From: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
To: "Thalis A(dot) Kalfigopoulos" <thalis(at)cs(dot)pitt(dot)edu>
Cc: Michael Meskes <meskes(at)postgresql(dot)org>, pgsql-general(at)postgresql(dot)org
Subject: Re: embedded SQL cursos declare fails
Date: 2001-07-11 03:37:15
Message-ID: 200107110337.f6B3bFJ02855@candle.pha.pa.us
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Can someone comment on this? I can't tell from the grammar.

> On Tue, 19 Jun 2001, Michael Meskes wrote:
>
> > On Mon, Jun 18, 2001 at 03:59:56PM -0400, Thalis A. Kalfigopoulos wrote:
> > > EXEC SQL DECLARE my_cursor CURSOR FOR SELECT a,b FROM lala WHERE a= :i;
> > > EXEC SQL FETCH FORWARD NEXT FROM my_cursor INTO :tmpa,:tmpb;
> >
> > Is there an EXEC SQL OPEN CURSOR my_cursor in between these lines?
> >
> > > I check the .c file generated by ecpg and the cursor declaration is commented out :-(
> >
> > That's correct. It's placed at the OPEN spot.
>
> Correct, it works. But I was confused because the documentation (http://www.postgresql.org/idocs/index.php?ecpg-develop.html) mentions:
>
> Open cursor statement
> An open cursor statement looks like:
> exec sql open cursor;
> and is ignore and not copied from the output.
>
> This gave me the impression that no explicit OPEN is necessary to operate on the cursor (normal Pg behavior). If not just my misunderstanding, someone rephrase thin in the docs.
>
>
> cheers,
> thalis
>
> >
> > Michael
> > --
> > Michael Meskes
> > Michael(at)Fam-Meskes(dot)De
> > Go SF 49ers! Go Rhein Fire!
> > Use Debian GNU/Linux! Use PostgreSQL!
> >
>
>
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