同事遇到一个问题，怎么实现行转列，参考了别人的示例，我是这样解决的。
创建数据源：
create table #temp (
objectid int,
sitename nvarchar(32),
cities nvarchar(32),
projectdurationno nvarchar(32),
fullname nvarchar(32),
createdate datetime,
nodename nvarchar(32)
) insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(2,'','海口市','','','10 30 2015 10:26AM','开始')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(2,'','海口市','','','10 30 2015 10:26AM','规划库')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(2,'','海口市','','','10 30 2015 10:27AM','投资')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(2,'','海口市','','','10 30 2015 4:37PM','站点')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(2,'','海口市','','','10 30 2015 4:37PM','方案')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(2,'','海口市','','','10 30 2015 4:38PM','集成')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(4,'','海口市','','','10 30 2015 6:03PM','开始')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(4,'','海口市','','','10 30 2015 6:03PM','规划库')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(4,'','海口市','','','10 30 2015 6:03PM','投资')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(4,'','海口市','','','10 30 2015 9:31PM','站点')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(4,'','海口市','','','10 30 2015 9:31PM','方案')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(4,'','海口市','','','10 30 2015 9:32PM','集成')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(4,'','海口市','','','10 30 2015 9:32PM','光缆厂家')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(6,'','海口市','','','11 3 2015 3:13PM','开始')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(6,'','海口市','','','11 3 2015 3:13PM','规划库')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(6,'','海口市','','','11 3 2015 3:13PM','投资')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(6,'','海口市','','','11 3 2015 3:14PM','站点')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(6,'','海口市','','','11 3 2015 3:14PM','方案')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(6,'','海口市','','','11 3 2015 3:18PM','集成')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(6,'','海口市','','','11 3 2015 3:18PM','光缆厂家')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(6,'','海口市','','','11 3 2015 3:19PM','分布系统、设备安装')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(6,'','海口市','','','11 3 2015 3:19PM','光缆到位')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(6,'','海口市','','','11 3 2015 3:24PM','PTN上线')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(6,'','海口市','','','11 3 2015 3:25PM','开通')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(6,'','海口市','','','11 3 2015 3:26PM','结束')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(8,'','海口市','','','11 3 2015 3:45PM','开始')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(8,'','海口市','','','11 3 2015 3:45PM','规划库')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(8,'','海口市','','','11 3 2015 3:45PM','投资')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(8,'','海口市','','','11 3 2015 3:46PM','站点')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(8,'','海口市','','','11 3 2015 3:46PM','方案')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(9,'','海口市','','','11 3 2015 4:26PM','开始')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(9,'','海口市','','','11 3 2015 4:26PM','规划库')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(9,'','海口市','','','11 3 2015 4:26PM','投资')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(10,'','海口市','','','11 3 2015 4:29PM','开始')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(10,'','海口市','','','11 3 2015 4:29PM','规划库')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(10,'','海口市','','','11 3 2015 4:29PM','投资')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(11,'','海口市','','','11 3 2015 4:33PM','开始')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(11,'','海口市','','','11 3 2015 4:33PM','规划库')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(11,'','海口市','','','11 3 2015 4:33PM','投资')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(11,'','海口市','','','11 3 2015 4:33PM','站点')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(11,'','海口市','','','11 3 2015 4:41PM','方案')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(11,'','海口市','','','11 3 2015 4:42PM','集成')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(11,'','海口市','','','11 3 2015 4:42PM','光缆厂家')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(11,'','海口市','','','11 3 2015 4:42PM','分布系统、设备安装')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(11,'','海口市','','','11 3 2015 4:43PM','光缆到位')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(11,'','海口市','','','11 3 2015 4:44PM','PTN上线')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(11,'','海口市','','','11 3 2015 4:44PM','开通')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(11,'','海口市','','','11 3 2015 4:46PM','结束')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(7,'','海口市','','','11 3 2015 3:30PM','开始')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(7,'','海口市','','','11 3 2015 3:30PM','规划库')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(7,'','海口市','','','11 3 2015 3:30PM','投资')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(7,'','海口市','','','11 3 2015 3:31PM','站点')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(7,'','海口市','','','11 3 2015 3:31PM','方案')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(7,'','海口市','','','11 3 2015 3:32PM','集成')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(7,'','海口市','','','11 3 2015 3:32PM','光缆厂家')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(5,'','海口市','','','11 3 2015 10:31AM','开始')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(5,'','海口市','','','11 3 2015 10:31AM','规划库')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(5,'','海口市','','','11 3 2015 10:34AM','投资')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(3,'','海口市','','','10 30 2015 5:36PM','开始')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(3,'','海口市','','','10 30 2015 5:36PM','规划库')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(3,'','海口市','','','10 30 2015 5:36PM','投资')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(3,'','海口市','','','10 30 2015 5:37PM','站点')
insert into #temp(objectid,sitename,cities,projectdurationno,fullname,createdate,node_name)values(3,'','海口市','','','10 30 2015 5:37PM','方案')
方案一、使用pivot进行行转列：
select objectid,SiteName,[开始],[规划库],[投资],[站点],[方案],[集成]
from(
select objectid,sitename,NODE_NAME,createdate from #temp
) as t10
pivot(
max(createdate)
for node_name in
([开始],[规划库],[投资],[站点],[方案],[集成])
) as t11
order by sitename,objectid
方案二、group by 方案
select t10.sitename,t10.objectid,
(case t10.node_name when '开始' then t10.createdate else null end) as '开始',
(case t10.node_name when '规划库' then t10.createdate else null end) as '规划库',
(case t10.node_name when '投资' then t10.createdate else null end) as '投资',
(case t10.node_name when '站点' then t10.createdate else null end) as '站点',
(case t10.node_name when '方案' then t10.createdate else null end) as '方案',
(case t10.node_name when '集成' then t10.createdate else null end) as '集成'
into #temp10
from #temp as t10 select * from #temp10 select objectid,sitename,
max([开始]) as [开始],
max([规划库]) as [规划库],
max([投资]) as [投资],
max([站点]) as [站点],
max([方案]) as [方案],
max([集成]) as [集成]
into #temp12
from #temp10
group by objectid,sitename
对比之后两种方案结果一致。
执行效果：
2 1 2015-10-30 10:26:59.663 2015-10-30 10:26:59.683 2015-10-30 10:27:32.013 2015-10-30 16:37:14.153 2015-10-30 16:37:31.387 2015-10-30 16:38:51.797
4 1 2015-10-30 18:03:09.720 2015-10-30 18:03:09.737 2015-10-30 18:03:32.650 2015-10-30 21:31:11.683 2015-10-30 21:31:47.820 2015-10-30 21:32:28.450
6 1 2015-11-03 15:13:16.393 2015-11-03 15:13:16.410 2015-11-03 15:13:40.603 2015-11-03 15:14:30.073 2015-11-03 15:14:50.243 2015-11-03 15:18:15.117
8 1 2015-11-03 15:45:21.577 2015-11-03 15:45:21.593 2015-11-03 15:45:39.000 2015-11-03 15:46:08.953 2015-11-03 15:46:22.547 NULL
9 1 2015-11-03 16:26:01.500 2015-11-03 16:26:01.520 2015-11-03 16:26:22.587 NULL NULL NULL
10 1 2015-11-03 16:29:10.687 2015-11-03 16:29:10.697 2015-11-03 16:29:28.677 NULL NULL NULL
11 1 2015-11-03 16:33:02.083 2015-11-03 16:33:02.107 2015-11-03 16:33:23.270 2015-11-03 16:33:59.510 2015-11-03 16:41:48.663 2015-11-03 16:42:14.450
5 2 2015-11-03 10:31:13.560 2015-11-03 10:31:13.580 2015-11-03 10:34:41.880 NULL NULL NULL
7 2 2015-11-03 15:30:07.367 2015-11-03 15:30:07.377 2015-11-03 15:30:31.943 2015-11-03 15:31:29.560 2015-11-03 15:31:45.950 2015-11-03 15:32:08.257
3 7 2015-10-30 17:36:29.193 2015-10-30 17:36:29.237 2015-10-30 17:36:54.887 2015-10-30 17:37:24.507 2015-10-30 17:37:47.057 NULL