Re: [INTERFACES] Cursors and move
| От | Byron Nikolaidis |
|---|---|
| Тема | Re: [INTERFACES] Cursors and move |
| Дата | |
| Msg-id | 379FA436.631803B3@home.com обсуждение исходный текст |
| Ответ на | Cursors and move (Marcin Kadziolka <kalma@polsl.gliwice.pl>) |
| Список | 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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