sql随机返回一条数据

http://stackoverflow.com/questions/580639/how-to-randomly-select-rows-in-sql

sqlite：

SELECT * FROM data ORDER BY RANDOM() LIMIT 1;

Select a random row with MySQL:

SELECT column FROM table ORDER BY RAND() LIMIT 1

Select a random row with PostgreSQL:

SELECT column FROM table ORDER BY RANDOM() LIMIT 1

Select a random row with Microsoft SQL Server:

SELECT TOP 1 column FROM table ORDER BY NEWID()

Select a random row with IBM DB2

SELECT column, RAND() as IDX FROM table ORDER BY IDX FETCH FIRST 1 ROWS ONLY

Select a random record with Oracle:

SELECT column FROM ( SELECT column FROM table ORDER BY dbms_random.value ) WHERE rownum = 1