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Re: [HACKERS] NULL as an argument in plpgsql functions (fwd)

From: Oleg Bartunov <oleg(at)sai(dot)msu(dot)su>
To: pgsql-hackers(at)postgreSQL(dot)org
Subject: Re: [HACKERS] NULL as an argument in plpgsql functions (fwd)
Date: 1999-09-29 10:19:35
Message-ID: Pine.GSO.3.96.SK.990929135438.16613m-100000@ra (view raw or flat)
Thread:
Lists: pgsql-hackers
Excuse me for reposting,

I just want to be sure my original posting doesn't lost.
Is this a bug or feature ? 
Also, it seems there is a  limitation to a number of arguments.

	Regards,
        	Oleg

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

---------- Forwarded message ----------
Date: Mon, 27 Sep 1999 15:26:08 -0400 (EDT)
From: Bruce Momjian <maillist(at)candle(dot)pha(dot)pa(dot)us>
To: Oleg Bartunov <oleg(at)sai(dot)msu(dot)su>
Cc: pgsql-hackers(at)postgreSQL(dot)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.


> 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(at)sai(dot)msu(dot)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(at)candle(dot)pha(dot)pa(dot)us            |  (610) 853-3000
  +  If your life is a hard drive,     |  830 Blythe Avenue
  +  Christ can be your backup.        |  Drexel Hill, Pennsylvania 19026


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