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Re: MySQL rand() is slow on large datasets
Posted by: Mike Pogues
Date: May 12, 2009 10:21AM

Tried Jeff's query but only low number ids were generated. The query below solves this.

SELECT FROM table t JOIN (SELECT(FLOOR(max(id) * rand())) as maxid FROM table) as tt on >= tt.maxid LIMIT 1

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Written By
July 24, 2007 08:19AM
September 02, 2007 10:30AM
Re: MySQL rand() is slow on large datasets
May 12, 2009 10:21AM

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