如何为每张发票创建一个新的总行以显示每张唯一发票的总和？

Question

如何为每张发票创建一个新的总行以显示每张唯一发票的总和？我相信有一个使用分区的窗口函数。在下图中，每张发票应具有相同的“TAX AMT”和“FRGHT AMT”（如果有）（在这种情况下，它恰好是 0.00）。我正在尝试在每个“INVOICE”之后创建一个新行，将“TAX AMT”、“FRGHT AMT”和“EXT PRICE”相加，并将其放在“TOT MAT”中。

第二张图片显示了我正在尝试制作的内容。

SELECT ORDERNUM AS INVOICE
    ,PRODUCTLIST.ID AS ITEM
    ,PRODUCTLIST.DESC1 AS [DESC]
    ,INVDATE AS [INV DATE]
    ,format(USELL, 'N') AS PRICE
    ,QTYSOLD - QTYRETN AS QTY
    ,format(DOLSOLD - DOLRETN, 'N') AS [EXT PRICE]
    ,format(TAX_AMOUNT, 'N') AS [TAX AMT]
    ,format(FREIGHT, 'N') AS [FRGHT AMT]
    ,0.00 AS [HDL]
    ,0.00 AS [TOT MAT]
    ,PO_NUMBER AS [PO NBR]
FROM History
INNER JOIN PRODUCTLIST ON PARTNUM = UID
WHERE BILLTOID = '28736'
    AND INVDATE >= '2/21/2020' --and ordernum = 'S2149853.001'
ORDER BY INVDATE
    ,ORDERNUM

Answer 1

编辑 01：将最终查询更新为不求和 TAXAMT 和 FRGHTAMT

你走在正确的轨道上。我们将使用窗口聚合来按发票获取总数，并使用联合将其添加为新行。

创建样本数据：

DECLARE @tbl TABLE (
    INVOICE INT,
    EXTPRICE NUMERIC(32,2),
    TAXAMT NUMERIC(32,2),
    FRGHTAMT NUMERIC(32,2)
)

INSERT INTO @tbl
VALUES
(1,172.5,0,0)
,(1,105.26,0,0)
,(1,15.76,0,0)
,(1,129.64,0,0)
,(1,42.1,0,0)
,(1,284.22,0,0)
,(1,23.14,0,0)
,(1,90.52,0,0)
,(1,168.4,0,0)
,(2,11.46,0,0)
,(2,13.75,0,0)
,(2,17.95,0,0)
,(2,13.46,0,0)
,(2,13.46,0,0)

接下来我们需要计算发票的总 EXTPRICE + 发票的总 TAXAMT + 发票的总 FRGHTAMT。

SELECT
    *,
    SUM(EXTPRICE) OVER (PARTITION BY INVOICE)   --Total EXTPRICE by invoice
    + SUM(TAXAMT) OVER (PARTITION BY INVOICE)   --Total TAXAMT by invoice
    + SUM(FRGHTAMT) OVER (PARTITION BY INVOICE) --TOTAL FRGHTAMT by invoice
        AS InvoiceTotal
FROM @tbl

最后，要使这成为新行而不是附加列，我们需要查询表两次并将它们合并。因为联合需要相同数量的列和数据类型，所以我将行项目的发票总计保留为 NULL，并将单个价格保留为总计为 NULL。如果需要，您还可以按行项目计算总计。

编辑 01：InvoiceTotal 更新为仅计算 TAXAMT 和 FRGHTAMT 一次，而不是在窗口函数中对其求和。

SELECT
    INVOICE,
    'LineItem' AS RecordType,
    EXTPRICE,
    TAXAMT,
    FRGHTAMT,
    NULL AS InvoiceTotal
FROM @tbl
UNION ALL
SELECT DISTINCT
    INVOICE,
    'Total',
    NULL,
    NULL,
    NULL,
    SUM(EXTPRICE) OVER (PARTITION BY INVOICE)   --Total EXTPRICE by invoice
    + TAXAMT
    + FRGHTAMT
        AS InvoiceTotal
FROM @tbl
ORDER BY INVOICE,RecordType