sql中的分段列表
表：用户号码，登录时间
显示 ：每日登录各时间段的登录人数，和每天登录人数
if isnull(object_id('#tb'),'')=''
drop table #tb
CREATE TABLE #tb(列名1 varchar(12),时间 datetime)
INSERT INTO #tb
SELECT '03174190188','2009-11-01 07:17:39.217' UNION ALL
SELECT '015224486575','2009-11-01 08:01:17.153' UNION ALL
SELECT '013593006926','2009-11-12 08:04:46.560' UNION ALL
SELECT '013593006926','2009-11-12 07:05:46.560' UNION ALL
SELECT '013599584239','2009-11-22 08:53:27.763' UNION ALL
SELECT '013911693526','2009-11-23 08:53:51.683' UNION ALL
SELECT '013846472440','2009-11-23 08:54:57.233' UNION ALL
SELECT '013990353697','2009-11-24 08:55:25.077' UNION ALL
SELECT '013990353697','2009-11-25 08:56:01.327' UNION ALL
SELECT '013945594843','2009-11-26 08:57:02.233' UNION ALL
SELECT '013990353697','2009-11-27 08:57:29.700' UNION ALL
SELECT '013916597421','2009-11-28 08:59:49.390' UNION ALL
SELECT '03916995857','2009-11-29 09:11:05.607' UNION ALL
SELECT '015097712001','2009-11-30 09:13:50.293'
--SQL查询如下:
DECLARE @minDate datetime,@maxDate datetime;
SELECT @minDate = '2009-11-1',@maxDate = '2009-12-01';
select convert(char(10),dateadd(d,number,@minDate),120),
sum(case when convert(char(8),时间,108) between '00:00' and '01:00' then 1 else 0 end) as '00:00~01:00',
sum(case when convert(char(8),时间,108) between '01:00' and '02:00' then 1 else 0 end) as '01:00~02:00',
sum(case when convert(char(8),时间,108) between '02:00' and '03:00' then 1 else 0 end) as '02:00~03:00',
sum(case when convert(char(8),时间,108) between '03:00' and '04:00' then 1 else 0 end) as '03:00~04:00',
sum(case when convert(char(8),时间,108) between '04:00' and '05:00' then 1 else 0 end) as '04:00~05:00',
sum(case when convert(char(8),时间,108) between '05:00' and '06:00' then 1 else 0 end) as '05:00~06:00',
sum(case when convert(char(8),时间,108) between '06:00' and '07:00' then 1 else 0 end) as '06:00~07:00',
sum(case when convert(char(8),时间,108) between '07:00' and '08:00' then 1
相关文档：
系统环境：Windows 7
软件环境：Visual C++ 2008 SP1 +SQL Server 2005
本次目的：编写一个航空管理系统
这是数据库课程设计的成果，虽然成绩不佳，但是作为我用VC++ 以来编写的最大程序还是传到网上，以供参考。用VC++ 做数据库设计并不容易，但也不是不可能。以下是我的程序界面，后面 ......
--处理示例
--示例数据
create table tb(ID int,Name varchar(10),ParentID int)
insert tb select 1,'AAAA' ,0
union all select 2,'BBBB' ,0
union all select 3,'CCCC' ,0
union all select 4,'AAAA-1' ,1
union all select 5,'AAAA-2' ,1
u ......
--A. 从存储在非类型化的 xml 变量中的文档中删除节点
DECLARE @myDoc xml
SET @myDoc = '<?Instructions for=TheWC.exe ?>
<Root>
<!-- instructions for the 1st work center -->
<Location LocationID="10" LaborHours="1.1" MachineHours=".2" >
Some text 1
<st ......
SQL server安装时报挂起错误
SQL server安装时时：“以前的某个程序安装已在安装计算机上创建挂起的文件操作。运行安装程序之前必须重新启动计算机”错误。 打开注册表编辑器（开始->运行->regedit），在HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager中找到PendingFileRenameOperations项目，并删 ......
SQL按照日、周、月、年统计数据 收藏
文章参考：http://www.cnblogs.com/wenbhappy/archive/2008/07/02/1233660.html
如:
表:consume_record
字段:consume (money类型)
date (datetime类型)
请问怎么写四条sql语句分别按日,按周,按月,按季统计消费总量.
如:1月 1200� ......
