编号 层次 日期 数量
01 123 2009-10-01 1
01 124 2009-10-01 2
01 125 2009-10-01 3
01 126 2009-10-01 4
02 456 2009-10-01 1
02 457 2009-10-01 2
02 458 2009-10-01 3
03 789 2009-10-01 1
03 779 2009-10-01 2
04 555 2009-10-01 101 125 2009-10-02 1
01 126 2009-10-02 2
02 456 2009-10-02 1
02 457 2009-10-02 2
02 458 2009-10-02 3
03 789 2009-10-02 1
03 779 2009-10-02 2
04 555 2009-10-02 1
数据就是这些 当然后面还有很多日期 查询的时候 同一种编号在同一天内如果有超过两个 层次 就只要两个 数量最大 层次就好 ,出现一次就 直接留下
结果应该是这样的
编号 层次 日期
01 126 2009-10-01 4
01 125 2009-10-01 3
02 458 2009-10-01 3
02 457 2009-10-01 2
03 779 2009-10-01 2
03 789 2009-10-01 1
04 555 2009-10-01 101 126 2009-10-02 2
01 125 2009-10-02 1
02 458 2009-10-02 3
02 457 2009-10-02 2
03 779 2009-10-02 2
03 789 2009-10-02 1
04 555 2009-10-02 1拜托了 非常着急 小弟在线等待~~
谢谢你们
01 123 2009-10-01 1
01 124 2009-10-01 2
01 125 2009-10-01 3
01 126 2009-10-01 4
02 456 2009-10-01 1
02 457 2009-10-01 2
02 458 2009-10-01 3
03 789 2009-10-01 1
03 779 2009-10-01 2
04 555 2009-10-01 101 125 2009-10-02 1
01 126 2009-10-02 2
02 456 2009-10-02 1
02 457 2009-10-02 2
02 458 2009-10-02 3
03 789 2009-10-02 1
03 779 2009-10-02 2
04 555 2009-10-02 1
数据就是这些 当然后面还有很多日期 查询的时候 同一种编号在同一天内如果有超过两个 层次 就只要两个 数量最大 层次就好 ,出现一次就 直接留下
结果应该是这样的
编号 层次 日期
01 126 2009-10-01 4
01 125 2009-10-01 3
02 458 2009-10-01 3
02 457 2009-10-01 2
03 779 2009-10-01 2
03 789 2009-10-01 1
04 555 2009-10-01 101 126 2009-10-02 2
01 125 2009-10-02 1
02 458 2009-10-02 3
02 457 2009-10-02 2
03 779 2009-10-02 2
03 789 2009-10-02 1
04 555 2009-10-02 1拜托了 非常着急 小弟在线等待~~
谢谢你们
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select t.* from tb t where 层次 in (select top 2 层次 from tb where 编号 = t.编号 and 日期 = t.日期 order by 层次 desc) order by t.编号 , t.日期 , t.层次 desc
insert @TB
select '01',123,'2009-10-01',1 union all
select '01',124,'2009-10-01',2 union all
select '01',125,'2009-10-01',3 union all
select '01',126,'2009-10-01',4 union all
select '02',456,'2009-10-01',1 union all
select '02',457,'2009-10-01',2 union all
select '02',458,'2009-10-01',3 union all
select '03',789,'2009-10-01',1 union all
select '03',779,'2009-10-01',2 union all
select '04',555,'2009-10-01',1 union all
select '01',125,'2009-10-02',1 union all
select '01',126,'2009-10-02',2 union all
select '02',456,'2009-10-02',1 union all
select '02',457,'2009-10-02',2 union all
select '02',458,'2009-10-02',3 union all
select '03',789,'2009-10-02',1 union all
select '03',779,'2009-10-02',2 union all
select '04',555,'2009-10-02',1select *
from @TB t
where (select count(1) from @tb where t.编号=编号 and t.日期 =日期 and 数量>t.数量)<2
order by 日期, 数量 desc
--测试结果:
/*
编号 层次 日期 数量
---- ----------- ------------------------------------------------------ -----------
01 126 2009-10-01 00:00:00.000 4
01 125 2009-10-01 00:00:00.000 3
02 458 2009-10-01 00:00:00.000 3
02 457 2009-10-01 00:00:00.000 2
03 779 2009-10-01 00:00:00.000 2
03 789 2009-10-01 00:00:00.000 1
04 555 2009-10-01 00:00:00.000 1
02 458 2009-10-02 00:00:00.000 3
01 126 2009-10-02 00:00:00.000 2
02 457 2009-10-02 00:00:00.000 2
03 779 2009-10-02 00:00:00.000 2
04 555 2009-10-02 00:00:00.000 1
03 789 2009-10-02 00:00:00.000 1
01 125 2009-10-02 00:00:00.000 1(所影响的行数为 14 行)
*/
insert @TB
select '01',123,'2009-10-01',1 union all
select '01',124,'2009-10-01',2 union all
select '01',125,'2009-10-01',3 union all
select '01',126,'2009-10-01',4 union all
select '02',456,'2009-10-01',1 union all
select '02',457,'2009-10-01',2 union all
select '02',458,'2009-10-01',3 union all
select '03',789,'2009-10-01',1 union all
select '03',779,'2009-10-01',2 union all
select '04',555,'2009-10-01',1 union all
select '01',125,'2009-10-02',1 union all
select '01',126,'2009-10-02',2 union all
select '02',456,'2009-10-02',1 union all
select '02',457,'2009-10-02',2 union all
select '02',458,'2009-10-02',3 union all
select '03',789,'2009-10-02',1 union all
select '03',779,'2009-10-02',2 union all
select '04',555,'2009-10-02',1select *
from @TB t
where (select count(1) from @tb where t.编号=编号 and t.日期 =日期 and 数量>t.数量)<2
order by 日期, 编号, 数量 desc
--测试结果:
/*
编号 层次 日期 数量
---- ----------- ------------------------------------------------------ -----------
01 126 2009-10-01 00:00:00.000 4
01 125 2009-10-01 00:00:00.000 3
02 458 2009-10-01 00:00:00.000 3
02 457 2009-10-01 00:00:00.000 2
03 779 2009-10-01 00:00:00.000 2
03 789 2009-10-01 00:00:00.000 1
04 555 2009-10-01 00:00:00.000 1
02 458 2009-10-02 00:00:00.000 3
01 126 2009-10-02 00:00:00.000 2
02 457 2009-10-02 00:00:00.000 2
03 779 2009-10-02 00:00:00.000 2
04 555 2009-10-02 00:00:00.000 1
03 789 2009-10-02 00:00:00.000 1
01 125 2009-10-02 00:00:00.000 1(所影响的行数为 14 行)
*/
insert into tb values('01' , 123 , '2009-10-01' , 1 )
insert into tb values('01' , 124 , '2009-10-01' , 2 )
insert into tb values('01' , 125 , '2009-10-01' , 3 )
insert into tb values('01' , 126 , '2009-10-01' , 4 )
insert into tb values('02' , 456 , '2009-10-01' , 1 )
insert into tb values('02' , 457 , '2009-10-01' , 2 )
insert into tb values('02' , 458 , '2009-10-01' , 3 )
insert into tb values('03' , 789 , '2009-10-01' , 1 )
insert into tb values('03' , 779 , '2009-10-01' , 2 )
insert into tb values('04' , 555 , '2009-10-01' , 1 )
insert into tb values('01' , 125 , '2009-10-02' , 1 )
insert into tb values('01' , 126 , '2009-10-02' , 2 )
insert into tb values('02' , 456 , '2009-10-02' , 1 )
insert into tb values('02' , 457 , '2009-10-02' , 2 )
insert into tb values('02' , 458 , '2009-10-02' , 3 )
insert into tb values('03' , 789 , '2009-10-02' , 1 )
insert into tb values('03' , 779 , '2009-10-02' , 2 )
insert into tb values('04' , 555 , '2009-10-02' , 1 )
go--要数量最大的两个.
select t.* from tb t where 数量 in (select top 2 数量 from tb where 编号 = t.编号 and 日期 = t.日期 order by 数量 desc) order by t.日期 , t.编号 , t.数量 desc
/*
编号 层次 日期 数量
---------- ----------- ---------- -----------
01 126 2009-10-01 4
01 125 2009-10-01 3
02 458 2009-10-01 3
02 457 2009-10-01 2
03 779 2009-10-01 2
03 789 2009-10-01 1
04 555 2009-10-01 1
01 126 2009-10-02 2
01 125 2009-10-02 1
02 458 2009-10-02 3
02 457 2009-10-02 2
03 779 2009-10-02 2
03 789 2009-10-02 1
04 555 2009-10-02 1(所影响的行数为 14 行)
*/--要层次最大的两个. select t.* from tb t where 层次 in (select top 2 层次 from tb where 编号 = t.编号 and 日期 = t.日期 order by 层次 desc) order by t.日期 , t.编号 , t.层次 desc
/*
编号 层次 日期 数量
---------- ----------- ---------- -----------
01 126 2009-10-01 4
01 125 2009-10-01 3
02 458 2009-10-01 3
02 457 2009-10-01 2
03 789 2009-10-01 1
03 779 2009-10-01 2
04 555 2009-10-01 1
01 126 2009-10-02 2
01 125 2009-10-02 1
02 458 2009-10-02 3
02 457 2009-10-02 2
03 789 2009-10-02 1
03 779 2009-10-02 2
04 555 2009-10-02 1(所影响的行数为 14 行)*/drop table tb
declare @TB table([编号] varchar(2),[层次] int,[日期] datetime,[数量] int)
insert @TB
select '01',123,'2009-10-01',1 union all
select '01',124,'2009-10-01',2 union all
select '01',125,'2009-10-01',3 union all
select '01',126,'2009-10-01',4 union all
select '02',456,'2009-10-01',1 union all
select '02',457,'2009-10-01',2 union all
select '02',458,'2009-10-01',3 union all
select '03',789,'2009-10-01',1 union all
select '03',779,'2009-10-01',2 union all
select '04',555,'2009-10-01',1 union all
select '01',125,'2009-10-02',1 union all
select '01',126,'2009-10-02',2 union all
select '02',456,'2009-10-02',1 union all
select '02',457,'2009-10-02',2 union all
select '02',458,'2009-10-02',3 union all
select '03',789,'2009-10-02',1 union all
select '03',779,'2009-10-02',2 union all
select '04',555,'2009-10-02',1
SELECT 编号, 层次, 日期, 数量
FROM (
SELECT * ,RID = ROW_NUMBER() OVER (PARTITION BY 日期, 编号 ORDER BY 日期, 编号, 数量 DESC, 层次 DESC)
FROM @TB
)
WHERE RID<3
--测试结果:
/*
编号 层次 日期 数量
---- ----------- ------------------------------------------------------ -----------
01 126 2009-10-01 00:00:00.000 4
01 125 2009-10-01 00:00:00.000 3
02 458 2009-10-01 00:00:00.000 3
02 457 2009-10-01 00:00:00.000 2
03 779 2009-10-01 00:00:00.000 2
03 789 2009-10-01 00:00:00.000 1
04 555 2009-10-01 00:00:00.000 1
02 458 2009-10-02 00:00:00.000 3
01 126 2009-10-02 00:00:00.000 2
02 457 2009-10-02 00:00:00.000 2
03 779 2009-10-02 00:00:00.000 2
04 555 2009-10-02 00:00:00.000 1
03 789 2009-10-02 00:00:00.000 1
01 125 2009-10-02 00:00:00.000 1(所影响的行数为 14 行)
*/
if OBJECT_ID('tb') is not null drop table tb
GO
Create table tb([编号] varchar(2),[层次] int,[日期] datetime,[数量] int)
insert tb
select '01',123,'2009-10-01',1 union all
select '01',124,'2009-10-01',2 union all
select '01',125,'2009-10-01',3 union all
select '01',126,'2009-10-01',4 union all
select '02',456,'2009-10-01',1 union all
select '02',457,'2009-10-01',2 union all
select '02',458,'2009-10-01',3 union all
select '03',789,'2009-10-01',1 union all
select '03',779,'2009-10-01',2 union all
select '04',555,'2009-10-01',1 union all
select '01',125,'2009-10-02',1 union all
select '01',126,'2009-10-02',2 union all
select '02',456,'2009-10-02',1 union all
select '02',457,'2009-10-02',2 union all
select '02',458,'2009-10-02',3 union all
select '03',789,'2009-10-02',1 union all
select '03',779,'2009-10-02',2 union all
select '04',555,'2009-10-02',1GO
with cte as(select *,ROW_NUMBER()over(partition by [编号],[日期] order by [层次]desc) as Tag from tb)
select * from cte where Tag<3 order by [日期],[编号],[层次]
还有其中 最大的数量如果是 4,3,3的话就显示三条了,不行
只要两条就行了
-- Author: liangCK 小梁
-- Title : 查每个分组前N条记录
-- Date : 2008-11-13 17:19:23
-----------------------------------> 生成测试数据: #T
IF OBJECT_ID('tempdb.dbo.#T') IS NOT NULL DROP TABLE #T
CREATE TABLE #T (ID VARCHAR(3),GID INT,Author VARCHAR(29),Title VARCHAR(39),Date DATETIME)
INSERT INTO #T
SELECT '001',1,'邹建','深入浅出SQLServer2005开发管理与应用实例','2008-05-10' UNION ALL
SELECT '002',1,'胡百敬','SQLServer2005性能调校','2008-03-22' UNION ALL
SELECT '003',1,'格罗夫Groff.J.R.','SQL完全手册','2009-07-01' UNION ALL
SELECT '004',1,'KalenDelaney','SQLServer2005技术内幕存储引擎','2008-08-01' UNION ALL
SELECT '005',2,'Alex.Kriegel.Boris.M.Trukhnov','SQL宝典','2007-10-05' UNION ALL
SELECT '006',2,'飞思科技产品研发中心','SQLServer2000高级管理与开发','2007-09-10' UNION ALL
SELECT '007',2,'胡百敬','SQLServer2005数据库开发详解','2008-06-15' UNION ALL
SELECT '008',3,'陈浩奎','SQLServer2000存储过程与XML编程','2005-09-01' UNION ALL
SELECT '009',3,'赵松涛','SQLServer2005系统管理实录','2008-10-01' UNION ALL
SELECT '010',3,'黄占涛','SQL技术手册','2006-01-01'--SQL查询如下:--按GID分组,查每个分组中Date最新的前2条记录
--1.字段ID唯一时:
SELECT * FROM #T AS T WHERE ID IN(SELECT TOP 2 ID FROM #T WHERE GID=T.GID ORDER BY Date DESC)--2.如果ID不唯一时:
SELECT * FROM #T AS T WHERE 2>(SELECT COUNT(*) FROM #T WHERE GID=T.GID AND Date>T.Date)--SQL Server 2005 使用新方法--3.使用ROW_NUMBER()进行排位分组
SELECT ID,GID,Author,Title,Date
FROM
(
SELECT rid=ROW_NUMBER() OVER(PARTITION BY GID ORDER BY Date DESC),*
FROM #T
) AS T
WHERE rid<=2--4.使用APPLY
SELECT DISTINCT b.*
FROM #T AS a
CROSS APPLY
(
SELECT TOP(2) * FROM #T WHERE a.GID=GID ORDER BY Date DESC
) AS b
--结果
/*ID GID Author Title Date
---- ----------- ----------------------------- --------------------------------------- -----------------------
003 1 格罗夫Groff.J.R. SQL完全手册 2009-07-01 00:00:00.000
004 1 KalenDelaney SQLServer2005技术内幕存储引擎 2008-08-01 00:00:00.000
005 2 Alex.Kriegel.Boris.M.Trukhnov SQL宝典 2007-10-05 00:00:00.000
007 2 胡百敬 SQLServer2005数据库开发详解 2008-06-15 00:00:00.000
009 3 赵松涛 SQLServer2005系统管理实录 2008-10-01 00:00:00.000
010 3 黄占涛 SQL技术手册 2006-01-01 00:00:00.000(6 行受影响)
*/
declare @tb table (编号 varchar(2),层次 int,日期 datetime,数量 int)
insert into @tb
select '01',123,'2009-10-01',1 union all
select '01',124,'2009-10-01',3 union all
select '01',125,'2009-10-01',3 union all ---2条数量一样
select '01',126,'2009-10-01',4 union all
select '02',456,'2009-10-01',1 union all
select '02',457,'2009-10-01',2 union all
select '02',458,'2009-10-01',3 union all
select '03',789,'2009-10-01',1 union all
select '03',779,'2009-10-01',2 union all
select '04',555,'2009-10-01',1 union all
select '01',125,'2009-10-02',1 union all
select '01',126,'2009-10-02',2 union all
select '02',456,'2009-10-02',1 union all
select '02',457,'2009-10-02',2 union all
select '02',458,'2009-10-02',3 union all
select '03',789,'2009-10-02',1 union all
select '03',779,'2009-10-02',2 union all
select '04',555,'2009-10-02',1select * from @tb t
where (select count(*) from @tb where 编号=t.编号 and 日期=t.日期 and( 数量>t.数量 or 数量=t.数量 and 层次>t.层次))< 2
order by 日期 asc,编号 asc,数量 desc
编号 层次 日期 数量
---- ----------- ----------------------- -----------
01 126 2009-10-01 00:00:00.000 4
01 125 2009-10-01 00:00:00.000 3 ----只显示2条01
02 458 2009-10-01 00:00:00.000 3
02 457 2009-10-01 00:00:00.000 2
03 779 2009-10-01 00:00:00.000 2
03 789 2009-10-01 00:00:00.000 1
04 555 2009-10-01 00:00:00.000 101 126 2009-10-02 00:00:00.000 2
01 125 2009-10-02 00:00:00.000 1
02 458 2009-10-02 00:00:00.000 3
02 457 2009-10-02 00:00:00.000 2
03 779 2009-10-02 00:00:00.000 2
03 789 2009-10-02 00:00:00.000 1
04 555 2009-10-02 00:00:00.000 1(14 行受影响)