Question

我有一张这样的桌子：

Date      Document No.  Item        Quantity    Price 
1/2/2019    1           ADUKU SS        1       1450
1/2/2019    1           AL GUIDE        1        250
1/2/2019    2           AL FLAT         1         75.65
1/2/2019    2           BATTERY(SMALL)  2          7.52
1/2/2019    2           Item 2          2         72.15
1/2/2019    2           Item3           2         58.75
1/6/2019    3           PAPER WHITE 0.25        1250

我需要这样的输出以及小计：

Date    Document No.    Item            Quantity    Price
1/2/2019    1           ADUKU SS            1        1450
1/2/2019    1           AL GUIDE            1         250
1/2/2019    2           AL FLAT 1" 3 MM     1          75.65
1/2/2019    2           BATTERY             2           7.52
1/2/2019    2           Item 2              2          72.15
1/2/2019    2           Item3               2          58.75
1/2/2019                Subtotal                     1914.07
1/6/2019    3           PAPER WHITE         0.25     1250
1/6/2019                Subtotal                     1250

如何使用sql查询获得所需的输出？

我需要根据日期进行小计。

到目前为止，我尝试的方法如下：

SELECT T0.[DocDate] AS 'Date', T1.[DocNum] AS 'Document No', T0.[Dscription] AS 'Item', 
       T0.[Quantity] AS 'Quantity', T0.[StockPrice] AS 'Inventory Price' 
  FROM [table_1] T0 
 INNER JOIN [table_2] T1 
    ON T1.[DocEntry] = T0.[DocEntry] 
 UNION ALL 
SELECT T1.[DocDate] as 'Date', NULL,NULL,NULL, SUM(T0.StockPrice) 
  FROM [table_1] T0 
 INNER JOIN [table_2] T1 
    ON T1.[DocEntry] = T0.[DocEntry] 
 GROUP BY T1.[DocDate]

Answer 1

您可以对表和总和使用UNION：

select * 
from documents
union all
select
  date,
  null documentno,
  'Subtotal' item,
  null quantity,
  sum(price) price
from documents
group by date
order by 
  date, 
  case when documentno is null then 1 else 0 end,
  documentno

请参见demo

Answer 2

语法表明这不是MySQL查询。假设使用SQL Server（与方括号一致），您可以使用grouping sets，但是您需要一个聚合查询：

SELECT T1.DocDate, T1.DocNum, T2.Dscription AS Item, 
       SUM(T1.Quantity) AS Quantity,
       T1.StockPrice AS InventoryPrice 
FROM [table_1] T1 INNER JOIN
     [table_2] T2 
     ON T2.[DocEntry] = T1.[DocEntry] 
GROUP BY GROUPING SETS ( (T1.DocDate, T1.DocNum, T2.Dscription), (T1.DocDate,  T2.Dscription) );

小计使用查询

2 个答案: