How do I select random rows in MySQL?

Question

mytable

pid name field
=== ==== =====
1    A1   0
2    A2   1
3    A3   1
4    A4   0   
5    A5   0

This is my table structure. Here I want to se

Answer 1

Here is my solution:

SELECT *
FROM `mytable`
WHERE name ='A2'
OR name ='A3'
LIMIT 2
UNION
(SELECT DISTINCT *
FROM `mytable`
WHERE name !='A2'
OR name !='A3'
ORDER BY RAND( ) LIMIT 2) ORDER BY RAND()