Re: NULL feilds and ERROR messages from libpq++

From: Peter Eisentraut <peter_e(at)gmx(dot)net>
To: Tabor Kelly <pdxmax(at)dsl-only(dot)net>
Cc: <pgsql-general(at)postgresql(dot)org>
Subject: Re: NULL feilds and ERROR messages from libpq++
Date: 2001-06-16 12:49:41
Message-ID: Pine.LNX.4.30.0106161449110.755-100000@peter.localdomain
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-general pgsql-interfaces

Tabor Kelly writes:

> I am using the libpq++ interface to interact with a table that has
> some NULL fields in it. Why is it that every time I do a
> PgDatabase::GetValue on a field that has a NULL value, I get an error
> message printed to my console ("PQgetvalue: ERROR! tuple number 0 is
> out of range 0..-1")? Is this the normal behavior? It seems very odd
> that it would be, since it is common to interact with tables that
> contain NULL fields.

I think you're operating on a query result that returned zero rows.

--
Peter Eisentraut peter_e(at)gmx(dot)net http://funkturm.homeip.net/~peter

In response to

Browse pgsql-general by date

  From Date Subject
Next Message Dariusz Pietrzak 2001-06-16 12:52:37 Re: ODBC, ssl, problems with.
Previous Message Peter Eisentraut 2001-06-16 12:46:26 Re: Need help with COPY

Browse pgsql-interfaces by date

  From Date Subject
Next Message Tibor Laszlo 2001-06-16 15:48:49 RE: Error handling in ODBC
Previous Message Tabor Kelly 2001-06-15 22:57:00 NULL feilds and ERROR messages from libpq++