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Re: [INTERFACES] Cursors and move

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 (view raw or flat)
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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Next:From: Nicolas AragonDate: 1999-07-29 06:16:10
Subject: Re: [INTERFACES] libpq AND C++ Builder
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Subject: Cursors and move

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