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

Oracle查询结果集，随机排序

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

MySQL随机查询出一条记录：

-- 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)

查询结果集，随机排序

SELECT * FROM table1 ORDER BY rand()

MS SQL Server

SELECT *
FROM Northwind Orders
ORDER BY NEWID()

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