MySQLl> select RAND();->0.5925MySQLl>select RAND(20);->0.1811MySQLl>select RAND(20);->0.1811MySQLl>select RAND();->0.2079MySQLl>select RAND();->0.7888 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. MySQL随机更新数据 如何写一个语句能一下更新几百条MySQLL数据! 需要测试MySQL数据库,里面有一...