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@sai.msu.su, http://www.sai.msu.su/~megera/
> phone: +007(095)939-16-83, +007(095)939-23-83
> 
> 
> ************
> 


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