From: | Byron Nikolaidis <byron(dot)nikolaidis(at)home(dot)com> |
---|---|
To: | kalma(at)polsl(dot)gliwice(dot)pl |
Cc: | pgsql-interfaces(at)postgreSQL(dot)org |
Subject: | Re: [INTERFACES] Cursors and move |
Date: | 1999-07-29 00:45:42 |
Message-ID: | 379FA436.631803B3@home.com |
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Thread: | |
Lists: | pgsql-interfaces |
Marcin Kadziolka wrote:
>
> Hi All!
>
> First of all, I'm not sure if it is on-topic here. If not, show a correct
> place to me, please.
>
> I've got some problems with cursors and move command.
> I write a program using libpq and I have something like this:
>
> BEGIN
> DECLARE cur CURSOR FOR SELECT num FROM zlec
> FETCH FORWARD 2 IN cur
> MOVE BACKWARD ALL IN cur
> FETCH FORWARD 2 IN cur
>
> In the last FETCH command PQresultStatus(res) returns PGRES_TUPLES_OK, but
> PQntuples(res) returns 0.
> Is it a correct behaviour of the move command? Or I missed something?
>
The cursors have never really worked right. Especially the move seems
wrong, once you go off the edge, you're screwed.
Dave Hartwig was close to a fix for this at one point, but he gave up.
Byron
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