From: Dave Page <dpage@pgadmin.org>
To: Premil Agarwal <preagarw@gmail.com>
Cc: pgsql-interfaces@postgresql.org
Cc: pgsql-admin@postgresql.org
Subject: Re: [INTERFACES] Function's final statement must be a SELECT
Date: Wed, 14 May 2008 21:36:13 +0100
Message-ID: <937d27e10805141336l601c4aa2x8972c2bd7fda07e6@mail.gmail.com> (raw)
In-Reply-To: <92aa956e0805141323y3c14fe2p4e10ba9c67637c49@mail.gmail.com>
References: <92aa956e0805141323y3c14fe2p4e10ba9c67637c49@mail.gmail.com>
On Wed, May 14, 2008 at 9:23 PM, Premil Agarwal <preagarw@gmail.com> wrote:
> I am trying to write a function in PgAdmin 1.8.2 for postgres 8.3. The
> function should check the input parameter for NULL. If its NULL then
> function should return 'Auto' otherwise return the input as such.
>
> CREATE FUNCTION check_for_null( inp character varying) RETURNS character
> varying AS $$
> DECLARE
> temp1 character varying := 'Auto';
> temp2 character varying := inp;
> BEGIN
>
> IF temp2 IS NOT NULL THEN
> temp1 := temp2;
> END IF;
>
> RETURN temp1;
> END;
> $$ LANGUAGE SQL;
>
> When I hit 'OK' in create function window, I get following error :-
>
> ERROR: return type mismatch in function declared to return character varying
> DETAIL: Function's final statement must be a SELECT.
> CONTEXT: SQL function "check_for_null"
>
> Any suggestions why this happens ??
Choose pl/pgsql as the language, not SQL.
--
Dave Page
EnterpriseDB UK: http://www.enterprisedb.com
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To: pgsql-interfaces@postgresql.org
Cc: dpage@pgadmin.org, preagarw@gmail.com, pgsql-admin@postgresql.org
Subject: Re: [INTERFACES] Function's final statement must be a SELECT
In-Reply-To: <937d27e10805141336l601c4aa2x8972c2bd7fda07e6@mail.gmail.com>
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