Re: postgresql function not accepting null values inselect statement

 

  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;

>>> "Jyoti Seth" <jyotiseth2001@gmail.com> 2008-02-22 10:22 >>>
Hi,

I have a the following procedure

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=p_statecd

LOOP
        return next rec;
        END LOOP;
       return;
   end;
$BODY$
  LANGUAGE 'plpgsql' VOLATILE;

In the functionaries table statecd is a null field. When I pass some integer
value to the above procedure it works correctly but if I pass null value in
p_statecd it doesn't show anything whereas it has values and if I write the
select statement separately it gives values

Thanks,
Jyoti

-----Original Message-----
From: Richard Huxton [mailto:dev@archonet.com]
Sent: Friday, February 22, 2008 2:35 PM
To: Jyoti Seth
Cc: pgsql-sql@postgresql.org
Subject: Re: [SQL] postgresql function not accepting null values in select
statement

Jyoti Seth wrote:
>
> If I pass null value as the parameter of postgresql function, which is
used
> in the where clause of select statement is not functioning properly.

Either:

1. You're talking about frooble(), in which case it's supposed to do that.

or

2. You'll need to tell us what function it is, how you're using it and
what you think should happen.

My guess is that you're getting a null as the result and that's not
doing what you'd expect in your where clause.


--
   Richard Huxton
   Archonet Ltd


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