Thanks a lot
Trigve
----- Original Message ----
From: Rodrigo De León <rdeleonp@gmail.com>
To: pgsql-sql@postgresql.org; Trigve Siver <trigves@yahoo.com>
Sent: Wednesday, May 30, 2007 7:28:47 PM
Subject: Re: [SQL] slow query execution
On 5/30/07, Trigve Siver <trigves@yahoo.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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