我知道之前已经问了几次,但我找不到任何适合我的例子的解决方案.
UserID pagename pageid ----------------------------------- 1 home 1 1 contacts 3 3 home 1 2 links 2
如何根据此数据生成表格,其中所有页面名称都列为列,表格的每一行都是用户ID,列值根据原始表格是否有条目显示0或1那个特定的页面,例如:
UserID home links contacts ------------------------------------- 1 1 0 1 2 0 1 0 3 1 0 0
非常感谢您的帮助!
解决方法
在@t中构建表:
declare @t as table (UserID int,pagename nvarchar(20),pageid int); insert into @t values (1,'home',1),(1,'contacts',3),(3,(2,'links',2);
透视它:
select UserID,case when home is null then 0 else 1 end as home,case when links is null then 0 else 1 end as links,case when contacts is null then 0 else 1 end as contacts from @t pivot ( max(pageid) for pagename in ([home],[links],[contacts]) ) pivotT UserID home links contacts ----------- ----------- ----------- ----------- 1 1 0 1 2 0 1 0 3 1 0 0