Oracle查詢結果集，隨機排序

復制代碼 代碼如下:

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

MySQL隨機查詢出一條記錄：

復制代碼 代碼如下:

-- 下面的查詢語句效率高，不要使用 SELECT * FROM table1 ORDER BY rand() LIMIT 1 來查詢 SELECT * FROM table1 WHERE id=(SELECT id FROM table1 ORDER BY rand() LIMIT 1)

復制代碼 代碼如下:

SELECT * FROM table1 ORDER BY rand()

MS SQL Server

復制代碼 代碼如下:

SELECT *
　　FROM Northwind Orders
　　ORDER BY NEWID()

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