小计和 SQL

Question

我有一个销售数据的 SQL 表（如下所示），如何生成一个内联小计的结果集，并理想地按最高付费客户的降序对结果进行排序？

因此，给出如下表：

CUS_ID  | PRODUCT | AMOUNT
12      | A       |  2.50
12      | B       |  5.80
24      | A       |  10.00
24      | B       |  30.00

我会得到以下结果：

CUS_ID  | Product | AMOUNT
24      | A       |  10.00
24      | B       |  30.00
24      | Total   |  30.00
12      | A       |  2.50
12      | B       |  5.00
12      | Total   |  7.50

到目前为止，我可以进行以下查询：

  SELECT cus_id, product, amount FROM Sales
UNION ALL
  (SELECT cus_id, 'ZZZZ' AS product, SUM(amount) FROM Sales GROUP BY cus_id)
ORDER BY cus_id, product

但是，查询使用“ZZZZ”而不是“总计”（可以通过查找和替换来修复）之后），但它不按金额顺序排序。

编辑：请随意发布不涉及排序的答案。有些答案实际上对我很有帮助。

Answer 1

看看类似的东西

DECLARE @Sales TABLE(
        CUS_ID  INT,
        PRODUCT VARCHAR(20),
        AMOUNT FLOAT
)
INSERT INTO @Sales SELECT 12,'A', 2.50 
INSERT INTO @Sales SELECT 12,'B', 5.80 
INSERT INTO @Sales SELECT 24,'A', 10.00 
INSERT INTO @Sales SELECT 24,'B', 30.00

;WITH Vals AS (
        SELECT  cus_id, 
                product, 
                amount,
                1 DisplayOrder,
                SUM(amount) OVER(PARTITION BY cus_id) OrderTotal
        FROM    @Sales 
        UNION ALL   
        SELECT  cus_id, 
                'Total' AS product, 
                SUM(amount),
                2 DisplayOrder,
                SUM(amount)
        FROM    @Sales 
        GROUP BY cus_id
)
SELECT  cus_id,
        product,
        amount
FROM    Vals
ORDER BY  OrderTotal DESC,cus_id,DisplayOrder, product 

Answer 2

因为您很高兴没有在这里进行排序，所以在我回去工作之前，我会快速回复您。 Sql 服务器中有一个很棒的报告功能 - With Rollup。它自动将小计和总计行添加到查询中；基于您正在使用的分组。

作为使用 @astander 的表定义的一个非常简单的示例，

   DECLARE @Sales TABLE(
            CUS_ID  INT,
            PRODUCT VARCHAR(20),
            AMOUNT FLOAT
    )
    INSERT INTO @Sales SELECT 12,'A', 2.50 
    INSERT INTO @Sales SELECT 12,'B', 5.80 
    INSERT INTO @Sales SELECT 24,'A', 10.00 
    INSERT INTO @Sales SELECT 24,'B', 30.00

Select Cus_ID, Product, SUM(Amount)
From @Sales
group by cus_id, product with rollup

此返回

Cus_ID      Product              
----------- -------------------- ----------------------
12          A                    2.5
12          B                    5.8
12          NULL                 8.3
24          A                    10
24          B                    30
24          NULL                 40
NULL        NULL                 48.3

为了更轻松地编写报告数据提取并识别小计行，有一个函数 - 分组 - 您可以按元素分组进行查询。在下面的示例中，它标识小计和总计行。

DECLARE @Sales TABLE(
        CUS_ID  INT,
        PRODUCT VARCHAR(20),
        AMOUNT FLOAT
)
INSERT INTO @Sales SELECT 12,'A', 2.50 
INSERT INTO @Sales SELECT 12,'B', 5.80 
INSERT INTO @Sales SELECT 24,'A', 10.00 
INSERT INTO @Sales SELECT 24,'B', 30.00

select 
    case 
        when GROUPING(product) = 1 and GROUPING(cus_id) = 0 then 'Sub Total - Customer -' + cast(Cus_ID as varchar(10)) 
        when GROUPING(product) = 1 and GROUPING(cus_id) = 1 then 'Total'
        else cast(Cus_ID as varchar(10)) end as Cus_ID,
        PRODUCT, 
    sum(Amount) as Total_Amount 
From @sales 
group by cus_id, product with rollup

返回

Cus_ID                           PRODUCT              Total_Amount
-------------------------------- -------------------- ----------------------
12                               A                    2.5
12                               B                    5.8
Sub Total - Customer -12         NULL                 8.3
24                               A                    10
24                               B                    30
Sub Total - Customer -24         NULL                 40
Total                            NULL                 48.3

稍微调整一下就可以完成您想要的排序。