MySql randomize the last 10 rows

Question

I need help on how to randomize the last 10 rows of MySql records.

$mysqld = mysql_query(select * from table where amount > amount2 and code = \'$code\' o         


        

Answer 1

Assuming that time is the time when record was inserted, this will get you the latest 10 rows from the table:

SELECT * FROM `table` WHERE `amount` > `amount2` AND `code` = '$code'
  ORDER BY `time` DESC LIMIT 10

Now, you can use the result as a temporary table, sort it randomly (as it's only 10 rows) and return one row:

SELECT * FROM (
  SELECT * FROM `table` WHERE `amount` > `amount2` AND `code` = '$code'
    ORDER BY `time` DESC LIMIT 10
) AS temptable 
ORDER BY RAND()
LIMIT 1