Re: [HACKERS] NULL as an argument in plpgsql functions - Mailing list pgsql-hackers

On Mon, 27 Sep 1999, Bruce Momjian wrote:

> Date: Mon, 27 Sep 1999 15:26:08 -0400 (EDT)
> From: Bruce Momjian <maillist@candle.pha.pa.us>
> To: Oleg Bartunov <oleg@sai.msu.su>
> Cc: pgsql-hackers@postgreSQL.org
> Subject: Re: [HACKERS] NULL as an argument in plpgsql functions
> 
> > Hi,
> > 
> > this select produces error message:
> > test=> select test2(NULL);
> > ERROR:  typeidTypeRelid: Invalid type - oid = 0
> > 
> 
> Not sure how to pass NULL's into functions.

I'm unable to pass NULL also to sql function not only
to plpgsql one. I don't see any reason for this :-)
I'm wondering if I'm the only have this problem.
Regards,    Oleg

> 
> 
> > test2:
> > CREATE FUNCTION test2 (int4) RETURNS int4 AS '
> > Declare
> >     keyval      Alias For $1;
> >     cnt         int4;
> > Begin
> >   Update hits set count = count +1  where msg_id = keyval;
> >   return cnt;  
> > End;
> > ' LANGUAGE 'plpgsql';
> > 
> > When I do manually update
> > Update hits set count = count +1  where msg_id = NULL;
> > it works fine. What's the problem ?
> > 
> >     Regards,
> >     
> >         Oleg
> > 
> > 
> > test=> \d hits
> > Table    = hits
> > +----------------------------------+----------------------------------+-------+
> > |              Field               |              Type                | Length|
> > +----------------------------------+----------------------------------+-------+
> > | msg_id                           | int4                             |     4 |
> > | count                            | int4                             |     4 |
> > +----------------------------------+----------------------------------+-------+
> > test=> select version();
> > version                                                           
> > ------------------------------------------------------------------
> > PostgreSQL 6.5.2 on i586-pc-linux-gnulibc1, compiled by gcc 2.95.1
> > (1 row)
> > 
> > _____________________________________________________________
> > Oleg Bartunov, sci.researcher, hostmaster of AstroNet,
> > Sternberg Astronomical Institute, Moscow University (Russia)
> > Internet: oleg@sai.msu.su, http://www.sai.msu.su/~megera/
> > phone: +007(095)939-16-83, +007(095)939-23-83
> > 
> > 
> > ************
> > 
> 
> 
> -- 
>   Bruce Momjian                        |  http://www.op.net/~candle
>   maillist@candle.pha.pa.us            |  (610) 853-3000
>   +  If your life is a hard drive,     |  830 Blythe Avenue
>   +  Christ can be your backup.        |  Drexel Hill, Pennsylvania 19026
> 

_____________________________________________________________
Oleg Bartunov, sci.researcher, hostmaster of AstroNet,
Sternberg Astronomical Institute, Moscow University (Russia)
Internet: oleg@sai.msu.su, http://www.sai.msu.su/~megera/
phone: +007(095)939-16-83, +007(095)939-23-83