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Blog Entry:
SQL COALESCE() Very Cool, But Slower Than ISNULL()
Author:
Ben Nadel / Kinky Solutions
Link:
http://www.bennadel.com/index.cfm?dax=blog:196.view
Date Posted:
Aug 4, 2006 at 5:25 PM
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SELECT
id,
COALESCE( date_created, getDate() ) AS date_created
FROM
web_stats_hit
WHERE
COALESCE( date_created, getDate() ) IS NOT NULL
AND
COALESCE( id, 0 ) IS NOT NULL
SELECT
id,
ISNULL( date_created, getDate() ) AS date_created
FROM
web_stats_hit
WHERE
ISNULL( date_created, getDate() ) IS NOT NULL
AND
ISNULL( id, 0 ) IS NOT NULL