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MySQL rand() is slow on large datasets
Posted by: pbu pbu ()
Date: July 24, 2007 08:19AM

I love mysql because of its ease and performance wide. But when it comes to rand() on large datasets (with more than 100k rows) the query dramatically slows down the server and performance is way too bad.

Are mysql engineers doing something about this? Is there any good workaround? I am using mysql with php and thinking of pulling about 10 rows randomly from the table.

Thanks :)



Edited 1 time(s). Last edit at 07/24/2007 08:19AM by pbu pbu.

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Subject Views Written By Posted
MySQL rand() is slow on large datasets 16596 pbu pbu 07/24/2007 08:19AM
Re: MySQL rand() is slow on large datasets 10096 Thomas Baggelaar 07/24/2007 08:28AM
Re: MySQL rand() is slow on large datasets 6825 Maurizio G 09/02/2007 10:30AM
Re: MySQL rand() is slow on large datasets 8229 Jay Paroline 01/18/2008 12:25AM
Re: MySQL rand() is slow on large datasets 6665 Jeff Fillmore 05/15/2008 03:15PM
Re: MySQL rand() is slow on large datasets 6142 Mike Pogues 05/12/2009 10:21AM


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