数据库查询排序使用随机排序结果示例(Oracle/MySQL/MS SQL Server)

select * from table1 order by dbms_random.value();

-- 下面的查询语句效率高，不要使用 SELECT * FROM table1 ORDER BY rand() LIMIT 1 来查询 SELECT * FROM table1 WHERE id=(SELECT id FROM table1 ORDER BY rand() LIMIT 1)

SELECT * FROM table1 ORDER BY rand()

SELECT *
　　FROM Northwind Orders
　　ORDER BY NEWID()

SELECT TOP 10 *
　　FROM Northwind Orders
　　ORDER BY NEWID()