随机获取10条记录

概述mysql: select * from tablename order by rand() limit 10 sqlserver: select top 10 * from tablename order by NEWID()Sqlite：Select * From tablename order by random(*) limit 10Oracle：S

MysqL:    select * from tablename order by rand() limit 10 sqlserver:    select top 10 * from tablename order by NEWID()sqlite：Select * From tablename order by random(*) limit 10Oracle：SELECT column FROM ( SELECT column FROM table ORDER BY dbms_random.value ) WHERE rownum <= 10Postgresql：SELECT column FROM table ORDER BY RANDOM() liMIT 10

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