Question

我在SQL Server 2008中创建了以下查询

SELECT dimUser.EmpFName, dimUser.EmpLName, dimUser.EmpStartDt, dimUser.MgrEmpFullName1, 
    dimUser.PrimaryJobName, dimUser.PrimaryOrgName, Org.Org_Name
FROM dimUser 
INNER JOIN tblEmpOrg AS fact 
  ON dimUser.ID = fact.EmpOrg_EmpFK 
INNER JOIN Org 
  ON fact.EmpOrg_OrgFK = Org.Org_PK

由于每个用户有许多不同的组织名称，因此数据会产生多行。

Employee Name  Manager Name          Org_Name
Neil Jones     Elizabeth O'Donnell   USA 
Neil Jones     Elizabeth O'Donnell   AFG 
Neil Jones     Elizabeth O'Donnell   USA REG A

如何透视此查询以为不同的组织生成多个列。 I.E. Org 1，Org 2，Org 3等。

Employee Name  Manager Name         Org_NAME 1  Org_Name 2  Org_Name 3
Neil Jones     Elizabeth O'Donnell  USA         AFG         USA REG A

Answer 1

您可以使用PIVOT功能转换数据。但是，您需要将row_number()应用于每位员工，以帮助将行数据转换为列。

如果每个员工拥有一定数量的值，那么您可以对查询进行硬编码，类似于：

select [Employee Name],
  [Manager Name],
  Org_Name_1, 
  Org_Name_2, 
  Org_Name_3
from
(
  select [Employee Name], [Manager Name], [Org_Name],
    'Org_Name_'+cast(row_number() over(partition by [Employee Name] order by [Employee Name]) as varchar(50)) rn
  from yourtable
) src
pivot
(
  max([Org_Name])
  for rn in (Org_Name_1, Org_Name_2, Org_Name_3)
) piv;

请参阅SQL Fiddle with Demo

但是，如果每位员工的org_name值不明，那么您将需要使用动态SQL：

DECLARE @cols AS NVARCHAR(MAX),
    @query  AS NVARCHAR(MAX)

select @cols = STUFF((SELECT distinct ',' + QUOTENAME(rn) 
                    from
                    (
                      select 'Org_Name_'+cast(row_number() over(partition by [Employee Name] order by [Employee Name]) as varchar(50)) rn
                      from yourtable
                    ) t
            FOR XML PATH(''), TYPE
            ).value('.', 'NVARCHAR(MAX)') 
        ,1,1,'')

set @query = 'SELECT [Employee Name], [Manager Name],' + @cols + ' from 
             (
                select [Employee Name], [Manager Name], [Org_Name],
                  ''Org_Name_''+cast(row_number() over(partition by [Employee Name] order by [Employee Name]) as varchar(50)) rn
                from yourtable
            ) x
            pivot 
            (
                max(Org_Name)
                for rn in (' + @cols + ')
            ) p '

execute(@query)

请参阅SQL Fiddle with Demo

两者都生成结果：

| EMPLOYEE NAME |        MANAGER NAME | ORG_NAME_1 | ORG_NAME_2 | ORG_NAME_3 |
------------------------------------------------------------------------------
|    Neil Jones | Elizabeth O'Donnell |        USA |        AFG |  USA REG A |

注意：将yourtable替换为您的查询

透视SQL Server 2008问题

1 个答案: