In a Rails application, I'm using this to get a random row from a MySQL table:
contact = Contact.find(:all, :limit => 1, :order => 'RAND()')[0]
Even though the table only has about 20,000 rows it takes a couple seconds. Does anyone know of a faster way?
Update
Also tried just running the SQL in the console...
SELECT * FROM `contacts` ORDER BY RAND() LIMIT 1
It still takes a long time, like two or three seconds.
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