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

How to select random rows from a table:

From here: Select random rows in MySQL

A quick improvement over "table scan" is to use the index to pick up random ids.

SELECT *
FROM random, (
        SELECT id AS sid
        FROM random
        ORDER BY RAND( )
        LIMIT 10
    ) tmp
WHERE random.id = tmp.sid;