Question

我有一个查询，可以在特定课程中为学员生成结果，显示他们是否已完成模块。学习者可以互相采用不同的模块。

SELECT LearnerID, 
       UnitID, 
       CASE WHEN (SUM(Total - [Total Achieved])) = 0 THEN 'Yes' ELSE 'No' END AS Completed 
FROM  dbo.LMS_Achieved_Standards_Report 
GROUP BY CourseID, LearnerID, UnitID

结果看起来像这样

LearnerID  UnitID  Completed
15      15        Yes
15      28        No
28      28        Yes
116     150       Yes
79      12        No
69      34        Yes
69      15        No

我需要它看起来像这样：

LearnerID     Unit 15  Unit 28  Unit 150  Unit 12  Unit 34
15              Yes      No
28                       Yes
116                               Yes
79                                          Yes
69              No                                   Yes

已经陈述的另一个因素是它们都可以采用不同的单位，因此我无法创建具有设置列标题的PIVOT。

有什么想法吗？

Answer 1

试试这个;

    select * into #tbl from (select 'cust1' as key1,    'Red'as Type
union select 'cust1' as key1,   'Blue'as Type
union select 'cust1' as key1,   'Yellow'as Type
union select 'cust2' as key1,   'Red'as Type
union select 'cust2' as key1,   'Blue'as Type
union select 'cust2' as key1,   'Green'as Type) as dd

declare @strsql as nvarchar(max)
declare @columns as nvarchar(max)

set @columns = (select stuff((select distinct ',['+Type+']' from #tbl FOR XML PATH('')),1,1,''))
set @strsql =  'select key1,'+@columns + 'from (select * from #tbl) as p pivot (count(p.Type) For p.Type in ('+@columns+'))as pivottable'
--set @strsql = 'select 
EXECUTE sp_executesql @strsql

SQL Pivot动态列

1 个答案: