Check if row exists, if not add it [MySQL]
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Steven
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Published on 2011-02-08T23:23:53Z
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2011/02/08
23:25 UTC
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I need to add a row to a MySQL database table but only if the row doesn't already exist. My database server just went down so I can't test this, but will this work as expected?
INSERT INTO `blocks` (`block_file`,`settings_group`)
VALUES ('announcements','announcement_settings')
WHERE NOT EXISTS (SELECT `block_file`,`settings_group`
FROM `blocks`
WHERE `block_file`='announcements' AND `settings_group`='announcement_settings')
It seems like sound logic. Is this a valid query or is there a better way of doing this?
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