WITH Name AS ( SELECT * FROM ( SELECT xzqdm, , ) xzdm, COUNT (*) sl FROM sddltb_qc WHERE xzqdm ') GROUP BY xzqdm, , ) ) AS A ORDER BY xzqdm, xzdm, sl ) SELECT xzqdm, xzdm, sl FROM ( SELECT *, ROW_NUMBER () OVER ( PARTITION BY xzqdm ORDER BY sl DESC )
-- 根据编号分组取第一条数据 select * from table t where t.no=(select max(no) from table t1 where t1.no=t.no) -- 根据编号分组后取第一条数据 SELECT * FROM (SELECT ROW_NUMBER() OVER (partition BY no ORDER BY no) rowId,* from table) t WHERE rowId=1
开发中经常会遇到,分组查询最新数据的问题,比如下面这张表(查询每个地址最新的一条记录): sql如下: -- ---------------------------- -- Table structure for test -- ---------------------------- DROP TABLE IF EXISTS `test`; CREATE TABLE `test` ( `id` ) NOT NULL AUTO_INCREMENT, `name` ) CHARACTER SET
调试发现,查询到的就是一条数据 hql语句执行结果 Hibernate: select ballmodel0_.ball_id as ball_id1_1_, ballmodel0_.color as color2_1_, ballmodel0_.origion as origion3_1_, ballmodel0_.owner as owner4_1_, ballmodel0_.province as province5_1_ from t_ball ballmodel0_ 但是另一个dao的
select * from (select *,row_number() over(partition by PropertyRoofBeamID order by PropertyRoomID desc) as Sequencecount from PropertyRoom)t1 where Sequencecount<=3 partition by 具有分组的作用row_number排序进行分组.
SELECT uploaddate ,ptnumber ,instcount FROM ( SELECT ROW_NUMBER() OVER( PARTITION BY uploaddate ORDER BY uploaddate DESC ,instcount DESC ) AS row ,* FROM ( SELECT uploaddate ,ptnumber ,COUNT(*) instcount FROM LtblLog.dbo.instlog201408 GROUP BY upload
分享一个朋友的人工智能教程.零基础!通俗易懂!风趣幽默!大家可以看看是否对自己有帮助,点击查看教程. 比如查询用户某一天最后一笔交易后的账户余额 SELECT *( SELECT *, row_number () OVER ( partition BY username ORDER BY tradeTime DESC ) rowid FROMtable WHEREtradeDate = '2017-08-31' ) t WHERE rowid = 1;
select * from(select animal,age,id, row_number()over(partition by animal order by age desc) row_num from zoo) where row_num <=5; http://bbs.csdn.net/topics/350001717