从数据库表中随机获取N条记录的SQL语句

Oracle:

       select * from (select * from tableName order by dbms_random.value) where rownum < N

MS SQLServer:

       select top N * from tableName order by newid()

My SQL:

       select * from tableName order by rand() limit N

原文：https://blog.csdn.net/senton/article/details/4404101