MySQL: Can you specify a random limit?

Question

Is there a way to randomize a limit number in SQL (MySQL)?

What I\'d like to be able to do is get a random number of results in a query to use in an insertion subquery w

Answer 1

For MySQL specifically:

SET @i = 0;
SELECT * 
FROM users
WHERE (@i:=@i+1) < RAND()*1000
ORDER BY RAND();

Answer 2

How about this:

    SELECT * 
      FROM users
     ORDER BY RAND()
     HAVING RAND() * 1000 < 10

The clause WHERE RAND() * 1000 < 10 randomly chooses to include each row with a probability of 1%. It's not quite a LIMIT variable clause but will do roughly the same thing.