SQL Server 中的 FOR XML PATH 子句

Question

我的列有一个工作脚本，到目前为止一切顺利，问题是 - 我如何隐藏那些 x 和 y 列？有什么办法吗？

我想要得到的结果是 - 仅显示 Z 列。如果我只是在第一行添加注释，它将无法正常工作并出现 xml 路径错误。

SELECT      
    C1S_PATIENTGROUP.PG_K AS [x], 
    C1S_PATIENTGROUP.NAME AS [y],
    SUBSTRING((SELECT ','+ [PatGroup].[PG_K] AS [text()]
               FROM D3_HOSPPATGROUPS [Hosp]
               INNER JOIN C1S_PATIENTGROUP [PatGroup] ON [Hosp].[PG_ID] = [PatGroup].[PG_ID]
               WHERE [Hosp].[HOSP_ID] = [card identificator]
               FOR XML PATH ('')), 2, 1000) AS [z] 
FROM         
    Z1_RPT_VIEW_15 
LEFT OUTER JOIN
    D3_HOSPPATGROUPS ON Z1_RPT_VIEW_15.[card identificator] = D3_HOSPPATGROUPS.HOSP_ID 
LEFT OUTER JOIN
    C1S_PATIENTGROUP ON C1S_PATIENTGROUP.PG_ID = D3_HOSPPATGROUPS.PG_ID

Answer 1

可以使用子查询：

如果我弄错了，请告诉我，以便我删除它。

SELECT SUBQ.Z FROM 
(
select * from Integral_TranSELECT      
    C1S_PATIENTGROUP.PG_K AS [x], 
    C1S_PATIENTGROUP.NAME AS [y],
    SUBSTRING((SELECT ','+ [PatGroup].[PG_K] AS [text()]
               FROM D3_HOSPPATGROUPS [Hosp]
               INNER JOIN C1S_PATIENTGROUP [PatGroup] ON [Hosp].[PG_ID] = [PatGroup].[PG_ID]
               WHERE [Hosp].[HOSP_ID] = [card identificator]
               FOR XML PATH ('')), 2, 1000) AS [z] 
FROM         
    Z1_RPT_VIEW_15 
LEFT OUTER JOIN
    D3_HOSPPATGROUPS ON Z1_RPT_VIEW_15.[card identificator] = D3_HOSPPATGROUPS.HOSP_ID 
LEFT OUTER JOIN
    C1S_PATIENTGROUP ON C1S_PATIENTGROUP.PG_ID = D3_HOSPPATGROUPS.PG_ID ) SUBQ