sql-server - 对列的所有值的总和的 SQL 查询

Question

我想要一个 sql 查询结果如下：

LineNumber 单价 数量

---

  1                14               12      
  2                09               10      
  3                34                5       
  4                18                9      
  5                42               40       
  6                07               10      
  7                45               15    
                                   -----   
                                   101

请帮助我....

Answer 1

要获得总数，您将使用聚合：

select sum(quantity) Total
from yourtable

要从表中返回数据：

select LineNumber, UnitPrice, Quantity
from yourTable

要将它们一起返回，您可以使用UNION ALL：

select LineNumber, UnitPrice, Quantity
from yourTable
UNION ALL
select 0, 0, sum(quantity) Total
from yourtable

请参阅带有演示的 SQL Fiddle

Answer 2

另一种方式

WITH YourTable(LineNumber, UnitPrice, Quantity)
     AS (SELECT 1, 14,12
         UNION ALL
         SELECT 2, 09, 10
         UNION ALL
         SELECT 3, 34, 5
         UNION ALL
         SELECT 4, 18, 9
         UNION ALL
         SELECT 5, 42, 40
         UNION ALL
         SELECT 6, 07, 10
         UNION ALL
         SELECT 7, 45, 15)
SELECT LineNumber,
       UnitPrice,
       SUM(Quantity) AS Quantity
FROM   YourTable
GROUP  BY GROUPING SETS ( ( LineNumber, UnitPrice, Quantity ), ( ) ) 

Answer 3

-- For all the data from the table
SELECT [LineNumber], [UnitPrice], [Quantity] FROM [SomeTable]

-- For the sum of the quantity field.
SELECT SUM([Quantity]) AS [Sum] FROM [SomeTable]