Re: postgresql function not accepting null values inselect statement

I have tried this, but it is showing following error:
ERROR: syntax error at or near "DISTINCT"
SQL state: 42601

Thanks,
Jyoti


-----Original Message-----
From: pgsql-sql-owner@postgresql.org [mailto:pgsql-sql-owner@postgresql.org]
On Behalf Of johnf
Sent: Friday, February 22, 2008 10:01 PM
To: pgsql-sql@postgresql.org
Subject: Re: [SQL] postgresql function not accepting null values inselect
statement

On Friday 22 February 2008 01:35:47 am Bart Degryse wrote:
> Can you try this...
>
> CREATE OR REPLACE FUNCTION getfunctionaries(p_statecd integer)
>   RETURNS SETOF t_functionaries AS
> $BODY$
> DECLARE
>   rec t_functionaries%ROWTYPE;
> BEGIN
>   FOR rec IN (
>     SELECT f.functionaryid, f.category, f.description
>     FROM functionaries f
>     WHERE f.statecd IS NOT DISTINCT FROM p_statecd)
>   LOOP
>     return next rec;
>   END LOOP;
>   return;
> END;
> $BODY$
> LANGUAGE 'plpgsql' VOLATILE;
>
a newbie question.  Could you explain why yours works?  I don't understand
how 
it works if p_statecd = NULL


-- 
John Fabiani

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