sql - 在 SQL Server 中将特定列的值显示为标题

Question

我正在创建一个 Web 应用程序，我需要在其中将列值显示为标题

例子

SELECT Name, Leave
FROM tblUser 
INNER JOIN tblLeaveMaster ON tblUser.EmployeeID = tblLeaveMaster.EmployeeID

从该查询中，我得到以下结果:

Name     Leave
---------------
Test1       5
Test2      10
test3       2

现在我想将这些值作为

Test1 Test2 Test3
-----------------
  5     10    2

我怎样才能做到这一点？

Answer 1

你可以试试用pivot

select pv.* from
(SELECT Name,Leave
FROM tblUser INNER JOIN tblLeaveMaster ON tblUser.EmployeeID=tblLeaveMaster.EmployeeID
)X
pivot
(max(leave) for name in ([Test1],[Test2],[Test3])) as pv

对于动态 PIVOT

declare @sql varchar(max)='',@col_list varchar(8000)=''

set @col_list = (select distinct quotename([Name])+',' from (SELECT Name,Leave
    FROM tblUser INNER JOIN tblLeaveMaster ON tblUser.EmployeeID=tblLeaveMaster.EmployeeID
    )X
for xml path(''))

set @col_list = left (@col_list,len(@col_list)-1)

set @sql = 'select '+@col_list+' from
    (SELECT Name,Leave
    FROM tblUser INNER JOIN tblLeaveMaster ON tblUser.EmployeeID=tblLeaveMaster.EmployeeID
    )X
pivot (max([Leave]) for [Name] in ('+@col_list+'))pv'

exec(@sql)