From: Alvaro Herrera <alvherre@commandprompt.com>
To: Premil Agarwal <preagarw@gmail.com>
Cc: pgsql-interfaces@postgresql.org
Cc: pgsql-admin@postgresql.org
Subject: Re: Function's final statement must be a SELECT
Date: Wed, 14 May 2008 16:36:21 -0400
Message-ID: <20080514203621.GI9838@alvh.no-ip.org> (raw)
In-Reply-To: <92aa956e0805141323y3c14fe2p4e10ba9c67637c49@mail.gmail.com>
References: <92aa956e0805141323y3c14fe2p4e10ba9c67637c49@mail.gmail.com>
Premil Agarwal escribió:
> 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 $$
[...]
> $$ LANGUAGE SQL;
^^^
There's your problem. Try using PLPGSQL instead.
In any case, you can do this with COALESCE() and it's much easier.
--
Alvaro Herrera http://www.CommandPrompt.com/
The PostgreSQL Company - Command Prompt, Inc.
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To: pgsql-interfaces@postgresql.org
Cc: alvherre@commandprompt.com, preagarw@gmail.com, pgsql-admin@postgresql.org
Subject: Re: Function's final statement must be a SELECT
In-Reply-To: <20080514203621.GI9838@alvh.no-ip.org>
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