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Re: InnoDB and locking, UPDATE and SELECT
Posted by: Rick James
Date: September 13, 2014 12:09AM

With InnoDB, do not use LOCK TABLE; instead use "transactions":

BEGIN;
UPDATE tasks SET isLocked=? WHERE isLocked=0 AND ... ORDER BY lastChecked LIMIT 100;
check for errors
SELECT ... FROM tasks WHERE isLocked=?;
check for errors
COMMIT;
check for errors

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Re: InnoDB and locking, UPDATE and SELECT
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September 13, 2014 12:09AM


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