Oracle 每種類型取前5條數據 SQL

原文鏈接：https://www.cnblogs.com/qiuting/p/7880500.html

select *
from (select t.*,row_number() over(partition by t.game_desc order by periods_no DESC) rn
     from 表名 t 
)
where  rn<=5

 

partition by 類型名 (根據類型分組)

row_number() over 排序