记录一次SQL查询语句

CREATE TABLE t_jeff ( 2 id int NOT NULL, 3 VINNumber varchar(255) DEFAULT NULL, 4 ChannelID varchar(255) DEFAULT NULL, 5 TimeStamp datetime DEFAULT NULL, 6 PRIMARY KEY (id) 7 ) ; 8 INSERT INTO t_jeff VALUES (‘1‘, ‘Group3‘, ‘3‘, ‘2015-05-27 00:00:00‘); 9 INSERT INTO t_jeff VALUES (‘2‘, ‘Group2‘, ‘5‘, ‘2015-05-23 00:00:00‘); 10 INSERT INTO t_jeff VALUES (‘3‘, ‘Group1‘, ‘4‘, ‘2015-05-25 00:00:00‘); 11 INSERT INTO t_jeff VALUES (‘4‘, ‘Group2‘, ‘3‘, ‘2015-05-29 00:00:00‘); 12 INSERT INTO t_jeff VALUES (‘7‘, ‘Group1‘, ‘2‘, ‘2015-05-30 00:00:00‘); 13 14 15 SELECT * FROM t_jeff 16 --1、VINNumber同组的放一起 17 --2、组之间排序逻辑：按照每组ChannelID最大值 倒序 18 --3、组内排序：按照ChannelID倒序。 19 20 SELECT A.* 21 FROM [dbo].[t_jeff] A 22 JOIN ( SELECT MAX([ChannelID]) AS [MaxChannelID] , 23 [VINNumber] 24 FROM [dbo].[t_jeff] 25 GROUP BY [VINNumber] 26 ) B ON A.VINNumber = B.VINNumber 27 ORDER BY B.MaxChannelID DESC , 28 A.ChannelID DESC 29 30 31

 

记录一次SQL查询语句

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