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* NULL feilds and ERROR messages from libpq++
@ 2001-06-15 19:00 Tabor Kelly <pdxmax@dsl-only.net>
2001-06-15 22:57 ` NULL feilds and ERROR messages from libpq++ Tabor Kelly <pdxmax@dsl-only.net>
0 siblings, 1 reply; 3+ messages in thread
From: Tabor Kelly @ 2001-06-15 19:00 UTC (permalink / raw)
To: pgsql-interfaces
Okay, I need to generate e-mails based on a table that may or may not
have certain fields that are null. 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 there a way to turn this off? If
not, what is a good work-around?
Thank You,
Tabor Kelly
^ permalink raw reply [nested|flat] 3+ messages in thread
* NULL feilds and ERROR messages from libpq++
2001-06-15 19:00 NULL feilds and ERROR messages from libpq++ Tabor Kelly <pdxmax@dsl-only.net>
@ 2001-06-15 22:57 ` Tabor Kelly <pdxmax@dsl-only.net>
2001-06-16 12:49 ` Re: NULL feilds and ERROR messages from libpq++ Peter Eisentraut <peter_e@gmx.net>
0 siblings, 1 reply; 3+ messages in thread
From: Tabor Kelly @ 2001-06-15 22:57 UTC (permalink / raw)
To: pgsql-general@postgresql.org
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.
Thank You,
Tabor Kelly
^ permalink raw reply [nested|flat] 3+ messages in thread
* Re: NULL feilds and ERROR messages from libpq++
2001-06-15 19:00 NULL feilds and ERROR messages from libpq++ Tabor Kelly <pdxmax@dsl-only.net>
2001-06-15 22:57 ` NULL feilds and ERROR messages from libpq++ Tabor Kelly <pdxmax@dsl-only.net>
@ 2001-06-16 12:49 ` Peter Eisentraut <peter_e@gmx.net>
0 siblings, 0 replies; 3+ messages in thread
From: Peter Eisentraut @ 2001-06-16 12:49 UTC (permalink / raw)
To: Tabor Kelly <pdxmax@dsl-only.net>; +Cc: pgsql-general@postgresql.org
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@gmx.net http://funkturm.homeip.net/~peter
^ permalink raw reply [nested|flat] 3+ messages in thread
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2001-06-15 19:00 NULL feilds and ERROR messages from libpq++ Tabor Kelly <pdxmax@dsl-only.net>
2001-06-15 22:57 ` Tabor Kelly <pdxmax@dsl-only.net>
2001-06-16 12:49 ` Peter Eisentraut <peter_e@gmx.net>
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