MySQL select 10 random rows from 600K rows fast

Question

How can I best write a query that selects 10 rows randomly from a total of 600k?

Answer 1

If you want one random record (no matter if there are gapes between ids):

PREPARE stmt FROM 'SELECT * FROM `table_name` LIMIT 1 OFFSET ?';
SET @count = (SELECT
        FLOOR(RAND() * COUNT(*))
    FROM `table_name`);

EXECUTE stmt USING @count;

Source: https://www.warpconduit.net/2011/03/23/selecting-a-random-record-using-mysql-benchmark-results/#comment-1266