Mysql Select some random rows and plus one specific row

Question

I have a quiz system which questions have multiple choises.

I want to show the right answer plus four more wrong choices. Totally I must have five choices.

Answer 1

SELECT *
FROM `choises`
WHERE questionid = :qid
ORDER BY correct DESC, RAND()
LIMIT 5

Assuming correct is some sort of int. Otherwise you might need to change DESC to ASC.

You can 'shuffle' the 5 results using one more ORDER BY RAND() like this:

SELECT * FROM (
    SELECT *
    FROM `choises`
    WHERE questionid = :qid
    ORDER BY correct DESC, RAND()
    LIMIT 5
) as t
ORDER BY RAND()