如何在sql中將兩個查詢結果添加為單個結果？

Question

我需要將兩個查詢輸出添加為單個結果。

第一個查詢輸出來自“ InvoiceDetail”表：

InvoiceID, POSCode, CQuantity, CPrice, TCost, AmountPaid

19327   07310000504 1   22.38   22.38   368.59
19326   07161030192 1   28.90   28.90   5402.69
19326   07013711044 2   12.53   25.06   5402.69
19327   07310000622 2   6.28    12.56   368.59
19326   07013721043 1   25.07   25.07   5402.69
19327   07310000626 2   6.28    12.56   368.59
19327   01230050268 2   37.15   74.30   368.59
19326   04210000910 2   9.84    19.68   5402.69
19327   01230050271 1   37.15   37.15   368.59 

我的第二個查詢輸出是來自“ InvoiceCharge”表：

 InvoiceID  totalCharge
  19326 9.00
  19326 6.00

最后我想要輸出像：

發票ID，POSCode，CQuantity，CPrice，TCost，已付金額，總費用

19327   07310000504 1   22.38   22.38   368.59   0.00
19326   07161030192 1   28.90   28.90   5402.69  15.00
19326   07013711044 2   12.53   25.06   5402.69  15.00
19327   07310000622 2   6.28    12.56   368.59    0.00
19326   07013721043 1   25.07   25.07   5402.69  15.00
19327   07310000626 2   6.28    12.56   368.59   0.00
19327   01230050268 2   37.15   74.30   368.59   0.00
19326   04210000910 2   9.84    19.68   5402.69  15.00
19327   01230050271 1   37.15   37.15   368.59    0.00

這就是我需要的..

這里的InvoiceID 19326的費用為（9.00 + 6.00）= 15.00，InvoiceID 19327的費用為免費，因此在InvoiceCharge表中找不到行。

Answer 1

請在下面查詢

select 
        InvoiceID, 
        POSCode, 
        CQuantity, 
        CPrice, 
        TCost, 
        AmountPaid, 
        (SELECT sum(totalCharge) FROM InvoiceCharge IC WHERE IC.InvoiceID = ID.InvoiceID) AS totalCharge 
from InvoiceDetail ID

Answer 2

嘗試這個：

select  InvoiceID, 
    POSCode, 
    CQuantity, 
    CPrice, 
    TCost, 
    AmountPaid,
    (case when a.charge is null then 0 else a.charge end)) as totalCharge
    from InvoiceDetail left join (SELECT sum(totalCharge) as charge , InvoiceCharge.InvoiceID FROM InvoiceCharge group by InvoiceCharge.InvoiceID) a on InvoiceCharge.InvoiceID = InvoiceDetail.InvoiceID