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

turbod was close with his answer, he was just ordering randomly, when it seems you wanted to order by pid, after getting the random rows you wanted in conjunction with the ones concerning A2 and A3:

(
    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 `pid`