SQL to Select a random row from a database table


Posted on October 19, 2008


There are lots of ways to select a random record or row from a database table. Here are some example SQL statements that don''t require additional application logic, but each database server requires different SQL syntax.

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

Thanks Tim

Select a random record with Oracle:

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

Thanks Mark Murphy

Feel free to post other example, variations, and SQL statements for other database servers in the comments.


标签:N/A

 

在线学习答案查询入口
微信扫一扫
微信扫码联系