Oracle查詢結(jié)果集，隨機排序
復(fù)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(fù)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)
查詢結(jié)果集，隨機排序
復(fù)制代碼代碼如下:
SELECT * FROM table1 ORDER BY rand()
MS SQL Server
復(fù)制代碼代碼如下:
SELECT *
FROM Northwind Orders
ORDER BY NEWID()
SELECT TOP 10 *
FROM Northwind Orders
ORDER BY NEWID()
