quick selection of a random row from a large table in mysql

Question

What is a fast way to select a random row from a large mysql table?

I\'m working in php, but I\'m interested in any solution even if it\'s in another language.

Answer 1

With a order yo will do a full scan table. Its best if you do a select count(*) and later get a random row=rownum between 0 and the last registry