Question

这是我想要编写查询的示例数据

Shopkeeper |       Date    |    Product
----------------------------------------
SA10000601 |    2011-12-01 |    8183
SA10000601 |    2011-02-01 |    190
SA10000601 |    2011-04-01 |    3192
SA10000601 |    2011-03-01 |    4195
SA10000601 |    2011-04-01 |    9195
SA10000605 |    2011-12-01 |    8183
SA10000601 |    2011-02-01 |    190
JA10000607 |    2011-04-01 |    3192
SA10000604 |    2011-03-01 |   195
JA10000603 |    2011-04-01 |    9195
SA10000601 |    2011-12-01 |    8183
SA10000601 |    2011-02-01 |    190
SA10000601 |    2011-04-01 |    3192
SA10000601 |    2011-09-01 |    4195
SA10000601 |    2011-08-01 |    9195
SA10000904 |    2011-08-01 |    9195
SA10000601 |    2011-05-01 |    8180
SA10000606 |    2011-03-01 |    190
SA10000601 |    2011-08-01 |   3192
SA10000609 |    2011-11-01 |    4195

我希望展示所有仅售出1个月，一年销售2-3个月，年销售4-5个月，一年销售6-7个月的产品。

在同一张表中，我想展示一直销售一个月的店主，已售卖2-3个月的店主，他们已售卖4-5个月。

应该看起来像这样（样本输出）：

Months     | Shopkeepers     |    Product sold
-----------------------------------------------
1 month    |       5         |        10
2-3 months |       3         |        2 
4-5 months |       8         |        4

查询应如何进入SQL Server？请寻求更多解释，因为我今天必须解决这个问题。在此先感谢：）

P.S。：那些表格的道歉，如何将数据放在表格中？

Answer 1

SELECT t2.MonthCount AS Months, COUNT(t2.Shopkeeper) AS Shopkeepers,
    SUM(t1.ProductCount) AS `Product Sold`
FROM
(
    SELECT Shopkeeper, COUNT(DISTINCT Product) AS ProductCount
    FROM products
    GROUP BY Shopkeeper
) t1
INNER JOIN
(
    SELECT Shopkeeper, COUNT(DISTINCT MONTH(Date)) AS MonthCount
    FROM products
    GROUP BY Shopkeeper
) t2
ON t1.Shopkeeper = t2.Shopkeeper
GROUP BY t2.MonthCount

以下是上述示例数据的输出：

╔════════════╦═════════════╦══════════════╗
║ MonthCount ║ Shopkeepers ║ Product Sold ║
╠════════════╬═════════════╬══════════════╣
║     1      ║      7      ║      7       ║
║     7      ║      1      ║      6       ║  
╚════════════╩═════════════╩══════════════╝

请注意，在上面的示例数据中，只有2种类型的店主：仅在一个月内销售的店铺（其中7家），以及在7个月内销售的店主。我选择逐月省略分组，但自己添加此功能并不会太难。

请按照以下链接查看正在运行的演示：

SQLFiddle

Answer 2

declare @table table
(shop_keeper nvarchar(50),[date]  date,product_sold int)

insert into @table
select 'SA10000601',     '2011-12-01',     8183
union all select 'SA10000601',     '2011-01-01',     10
union all select 'SA10000601',     '2011-02-01',     190
union all select 'SA10000601',     '2011-04-01',     3192
union all select 'SA10000601',     '2011-03-01',     4195
union all select 'SA10000601',     '2011-04-01',     9195
union all select 'SA10000605',     '2011-12-01',     8183
union all select 'SA10000601',     '2011-02-01',     190
union all select 'JA10000607',     '2011-04-01',     3192
union all select 'SA10000604',     '2011-03-01',    195
union all select 'JA10000603',     '2011-04-01',     9195
union all select 'SA10000601',     '2011-12-01',     8183
union all select 'SA10000601',     '2011-02-01',     190
union all select 'SA10000601',     '2011-04-01',     3192
union all select 'SA10000601',     '2011-09-01',     4195
union all select 'SA10000601',     '2011-08-01',     9195
union all select 'SA10000904',     '2011-08-01',     9195
union all select 'SA10000601',     '2011-05-01',     8180
union all select 'SA10000606',     '2011-03-01',     190
union all select 'SA10000601',     '2011-08-01',    3192
union all select 'SA10000609',     '2011-11-01',     4195


WITH cte
    AS (
        SELECT month([date]) AS [month]
            ,sum([product_sold]) AS [product_sold]
            ,count(shop_keeper) AS shop_keeper
            ,CASE 
                WHEN month([date]) % 2 = 0
                    THEN month([date])
                ELSE month([date]) - 1
                END AS RN
        FROM @table
        GROUP BY month([date])
        )
    SELECT CASE 
            WHEN RN <> 0
                AND RN <> 12
                THEN cast(RN AS VARCHAR) + ' - ' + cast(RN + 1 AS VARCHAR) + ' Months'
            WHEN Rn = 0
                THEN cast(RN + 1 AS VARCHAR) + ' Month'
            ELSE cast(RN AS VARCHAR) + ' Months'
            END AS [months]
        ,sum(product_sold) product_sold
        ,sum(shop_keeper) shop_keeper
    FROM cte
    GROUP BY RN

输出

+----------------+--------------+-------------+
|     months     | product_sold | shop_keeper |
+----------------+--------------+-------------+
| 1 Month        |           10 |           1 |
| 2 - 3 Months   |         5150 |           6 |
| 4 - 5 Months   |        36146 |           6 |
| 8 - 9 Months   |        25777 |           4 |
| 10 - 11 Months |         4195 |           1 |
| 12 Months      |        24549 |           3 |
+----------------+--------------+-------------+

Answer 3

尝试使用此查询：

SELECT month(date) AS month, count(shopkeepers) AS shopkeepers, sum(productsold) AS productsold
FROM products
GROUP BY month(date)

SQL Server输出：我应该如何继续在表中获取此输出？

3 个答案: