Re: Function's final statement must be a SELECT

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От Premil Agarwal
Тема Re: Function's final statement must be a SELECT
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Msg-id 92aa956e0805141347w2b6f803bq4540c8aa910915e0@mail.gmail.com
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Ответ на Re: Function's final statement must be a SELECT  (Alvaro Herrera <alvherre@commandprompt.com>)
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Great !!! COALESCE() does the job for me.

( BTW, replacing "SQL" by "PLPGSQL " still gets the same error ..... )

Thanks a lot Alvaro !!!




On Wed, May 14, 2008 at 4:36 PM, Alvaro Herrera <alvherre@commandprompt.com> wrote:
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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