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Date: Sat, 27 Sep 2003 22:21:25 -0700
From: Joe Conway <mail@joeconway.com>
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To: Richard Sydney-Smith <richard@ibisaustralia.com>
Cc: pgsql-sql@postgresql.org
Subject: Re: Mystery function error
References: <000c01c38572$73c03c50$251a32d2@athlon2000>
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Richard Sydney-Smith wrote:
>  CREATE OR REPLACE FUNCTION public.locate(bpchar, bpchar) RETURNS
> int4 AS ' -- search for the position of $2 in $1
> 
> declare srcstr alias for $1; searchstr alias for $2;
> 
> begin return position(searchstr in srcstr); ' LANGUAGE 'plpgsql'
> VOLATILE; 

You are missing the "end" keyword in there. Also, I'd think this 
function is IMMUTABLE not VOLATILE.

CREATE OR REPLACE FUNCTION public.locate(bpchar, bpchar)
RETURNS int4 AS '
   -- search for the position of $2 in $1
   declare
     srcstr alias for $1;
     searchstr alias for $2;
   begin
     return position(searchstr in srcstr);
   end;
' LANGUAGE 'plpgsql' IMMUTABLE;

This could also be done as:

CREATE OR REPLACE FUNCTION public.locate(bpchar, bpchar)
RETURNS int4 AS '
   select position($2 in $1)
' LANGUAGE 'sql';


HTH,

Joe