如何有一个行多列，而不是多行

Question

，我有以下数据：

在SQL Server中我如何通过weekdate所以我会为每个weekdate只有一排有小组，例如对于weekdate2015年11月14日：

任何线索？

Answer 1

使用条件聚合。

select cast(weekdate as date), 
sum(case when permittype = 0 then total else 0 end) as permittype0, 
sum(case when permittype = 1 then total else 0 end) as permittype1 
from tablename 
group by cast(weekdate as date) 

Answer 2

我会做这个使用条件汇总：

select weekdate, 
     sum(case when permittype = 0 then total else 0 end) as permitttype0, 
     sum(case when permittype = 1 then total else 0 end) as permitttype1 
from followingdata t 
group by weekdate 
order by weekdate; 

您还可以使用pivot语法，如果你喜欢。