Re: slow query execution

Thanks a lot

Trigve

----- Original Message ----
From: Rodrigo De León <rdeleonp(at)gmail(dot)com>
To: pgsql-sql(at)postgresql(dot)org; Trigve Siver <trigves(at)yahoo(dot)com>
Sent: Wednesday, May 30, 2007 7:28:47 PM
Subject: Re: [SQL] slow query execution

On 5/30/07, Trigve Siver <trigves(at)yahoo(dot)com> wrote:
> Can you point me to some sources
> or give me some examples, please?

CREATE OR REPLACE FUNCTION ROWNUM() RETURNS BIGINT AS
$$
BEGIN
RETURN NEXTVAL('ROWNUM_SEQ');
EXCEPTION WHEN OTHERS THEN
CREATE TEMP SEQUENCE ROWNUM_SEQ;
RETURN NEXTVAL('ROWNUM_SEQ');
END;
$$
LANGUAGE 'PLPGSQL';

SELECT ROWNUM(), S.X
FROM GENERATE_SERIES(5,1,-1) S(X);

Remember to reset the sequence value if you use this more than once in
the same session.

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