0
后,我想是这样的:无效的列名PIVOT
42 | 41 | 31 | 32 | Name
----------------------------
O 42
X 41
P 32
Y 41
Z 41
被转动的列标题也都在名称列中的值。各个列可以有不同的状态。这是我有,但我不断收到一个错误,说ValveGroupName
列是无效的。
DECLARE @cols AS NVARCHAR(MAX),
@query AS NVARCHAR(MAX)
select @cols = stuff((select ',' + quotename(ValveGroupName)
from dbo.adm_ValveGroup vgroup,
dbo.adm_Station station
where station.StationID = vgroup.StationID
and station.StationName in ('CBRN')
order by vgroup.ValveGroupName desc
for xml path(''), type).value('.', 'nvarchar(max)'), 1, 1, '')
set @query = 'select ValveGroupName,' + @cols + ' from
(
select vlog.status,
vgroup.ValveGroupName
from dbo.adm_Station station,
dbo.adm_ValveGroup vgroup,
dbo.valvegroup_log vlog
where station.StationID = vgroup.StationID
and vgroup.ValveGroupID = vlog.ValveGroupID
and station.StationName in (''CBRN'')
and vlog.logdate between ''2012-10-01'' and ''2012-10-30''
) x
pivot
(
max(status)
for ValveGroupName in (' + @cols + ')
) p '
execute (@query)
这个查询有什么问题?
谢谢。如果我没有进行任何左或右连接,为什么内连接而不是连接comman? – KrisW 2014-10-03 16:34:58
@KrisW逗号语法是INNER JOIN。我将它改为该语法,因为这是SQL的当前标准。 – Taryn 2014-10-03 17:05:43