MySQL实现随机获取几条数据的方法

转自:https://blog.csdn.net/xionglangs/article/details/50630758

第一条效率更高

1. SELECT * FROM address WHERE id >= (SELECT floor(RAND() * (SELECT MAX(id) FROM address))) ORDER BY id LIMIT 0,10

2. SELECT *,RAND() as r FROM address ORDER BY r LIMIT 0,10