SQL返回1或來自多列的不同值

Question

我的目標是獲取客戶餘額報告，但我被困在我的查詢 中，我可以獲取某個列的文檔類型。我有我的查詢

SELECT 
ROW_NUMBER() OVER(ORDER BY DR.id) AS 'NO.' ,   
CONVERT(VARCHAR(13), CAST(DR.doc_date AS DATE), 100) AS 'DOC DATE', 
SR.net_total, 
SR.dell_col_charge, 
SR.CDW, 
sp.amount 
FROM 
[dbo].[doc_customer]    DC 
LEFT JOIN [dbo].[doc_rent]   DR ON DR.doc_sourced_customer_id = DC.id 
LEFT JOIN [dbo].[slip_rent]   SR ON SR.doc_sourced_doc_rent_id = DR.id 
LEFT JOIN [dbo].[slip_rent_payment] SP ON SP.doc_sourced_rent_id  = DR.id 

爲u可以在我的查詢看到它返回的總淨，收費，CDW和金額 ，但我的目標是讓他們在1列在不同行。你可以看到我附加的圖像，這是我的查詢目標。

任何人有這個想法？謝謝。

Answer 1

我喜歡用apply爲unpivoting：

SELECT ROW_NUMBER() OVER(ORDER BY DR.id) AS [NO.] ,   
     CONVERT(VARCHAR(13), CAST(DR.doc_date AS DATE), 100) AS [DOC DATE], 
     v.* 
FROM [dbo].[doc_customer] DC LEFT JOIN 
    [dbo].[doc_rent] DR 
    ON DR.doc_sourced_customer_id = DC.id LEFT JOIN 
    [dbo].[slip_rent] SR 
    ON SR.doc_sourced_doc_rent_id = DR.id LEFT JOIN 
    [dbo].[slip_rent_payment] SP 
    ON SP.doc_sourced_rent_id = DR.id OUTER APPLY 
    (VALUES ('net_total', SR.net_total), 
      ('dell_col_charge', SR.dell_col_charge), 
      ('CDW', SR.CDW), 
      ('amount', sp.amount) 
    ) v(which, val);