Question

前言，这是Microsoft SQL Server。我有不同年份的不同收入的几个不同栏目。我需要按每个给定产品的总销售额进行排序，但不要将其作为实际列报告。注释行是我尝试这样做的方式，但似乎你不能通过别名来命令。怎么会这样呢？

title

Answer 1

两种方法

将您的查询作为内部查询和订单
按顺序排列完整的公式

查询＃1

select * from 
    (
    SELECT 
        StockItems.StockItemID, 
        StockItemName,
        SUM(CASE WHEN OrderDate >= '2013-01-01'
            AND OrderDate < '2014-01-01'
            THEN Quantity * OrderLines.UnitPrice END) AS Sales2013,
        SUM(CASE WHEN OrderDate >= '2014-01-01'
            AND OrderDate < '2015-01-01'
            THEN Quantity * OrderLines.UnitPrice END) AS Sales2014,
        SUM(CASE WHEN OrderDate >= '2014-01-01'
            AND OrderDate < '2015-01-01'
            THEN Quantity * OrderLines.UnitPrice END) AS Sales2015,
        SUM(CASE WHEN OrderDate >= '2015-01-01'
            AND OrderDate < '2016-01-01'
            THEN Quantity * OrderLines.UnitPrice END) AS Sales2016
    FROM 
        Warehouse.StockItems

        INNER JOIN Sales.OrderLines
            ON Warehouse.StockItems.StockItemID = Sales.OrderLines.StockItemID
        INNER JOIN Sales.Orders
            ON Sales.OrderLines.OrderID = Sales.Orders.OrderID

    GROUP BY 
        StockItems.StockItemID, 
        StockItemName
    ) temp
order by SUM(Sales2013 + Sales2014 + Sales2015 + Sales2016)

查询＃2

 SELECT 
        StockItems.StockItemID, 
        StockItemName,
        SUM(CASE WHEN OrderDate >= '2013-01-01'
            AND OrderDate < '2014-01-01'
            THEN Quantity * OrderLines.UnitPrice END) AS Sales2013,
        SUM(CASE WHEN OrderDate >= '2014-01-01'
            AND OrderDate < '2015-01-01'
            THEN Quantity * OrderLines.UnitPrice END) AS Sales2014,
        SUM(CASE WHEN OrderDate >= '2014-01-01'
            AND OrderDate < '2015-01-01'
            THEN Quantity * OrderLines.UnitPrice END) AS Sales2015,
        SUM(CASE WHEN OrderDate >= '2015-01-01'
            AND OrderDate < '2016-01-01'
            THEN Quantity * OrderLines.UnitPrice END) AS Sales2016
    FROM 
        Warehouse.StockItems

        INNER JOIN Sales.OrderLines
            ON Warehouse.StockItems.StockItemID = Sales.OrderLines.StockItemID
        INNER JOIN Sales.Orders
            ON Sales.OrderLines.OrderID = Sales.Orders.OrderID

    GROUP BY 
        StockItems.StockItemID, 
        StockItemName

order by SUM(Quantity * OrderLines.UnitPrice)

Answer 2

SELECT StockItemID
    , StockItemName
    , Sales2013
    , Sales2014
    , Sales2015
    , Sales2016
    , Sales2013 + Sales2014 + Sales2015 + Sales2016 total_sales
FROM 
(
    SELECT 
        StockItems.StockItemID, 
        StockItemName,
        SUM(CASE WHEN OrderDate >= '2013-01-01'
        AND OrderDate < '2014-01-01'
        THEN Quantity * OrderLines.UnitPrice END) AS Sales2013,
        SUM(CASE WHEN OrderDate >= '2014-01-01'
        AND OrderDate < '2015-01-01'
        THEN Quantity * OrderLines.UnitPrice END) AS Sales2014,
        SUM(CASE WHEN OrderDate >= '2014-01-01'
        AND OrderDate < '2015-01-01'
        THEN Quantity * OrderLines.UnitPrice END) AS Sales2015,
        SUM(CASE WHEN OrderDate >= '2015-01-01'
        AND OrderDate < '2016-01-01'
        THEN Quantity * OrderLines.UnitPrice END) AS Sales2016
    FROM 
        Warehouse.StockItems

        INNER JOIN Sales.OrderLines
        ON Warehouse.StockItems.StockItemID = Sales.OrderLines.StockItemID
        INNER JOIN Sales.Orders
        ON Sales.OrderLines.OrderID = Sales.Orders.OrderID

    GROUP BY 
        StockItems.StockItemID, 
        StockItemName
)
ORDER BY total_sales

Answer 3

添加SUM列：

SUM(CASE WHEN OrderDate >= '2013-01-01'
        AND OrderDate < '2016-01-01'
        THEN Quantity * OrderLines.UnitPrice END) AS Sales_SUM

然后按Sales_SUM订购

Answer 4

嗯，性能最佳的解决方案需要使用PIVOT，我将其包装在CTE中以提高可读性：

;WITH pvt AS (
    SELECT 
        StockItems.StockItemID, 
        StockItemName,
        YEAR(OrderDate) AS OrderYear,
        Quantity * OrderLines AS SalesTotal,
        SUM(Quantity * OrderLines) OVER (PARTITION BY StockItems.StockItemID) AS SalesForStockItemForYear 
    FROM 
        Warehouse.StockItems
        INNER JOIN Sales.OrderLines
            ON Warehouse.StockItems.StockItemID = Sales.OrderLines.StockItemID
        INNER JOIN Sales.Orders
            ON Sales.OrderLines.OrderID = Sales.Orders.OrderID
    WHERE
        YEAR(OrderDate) IN (2013,2014,2015,2016)
    PIVOT (
        SUM(SalesTotal) FOR OrderYear IN ([2013],[2014],[2015],[2016])
    )
)

SELECT DISTINCT
    pvt.StockItemID,
    pvt.StockItemName,
    pvt.[2013] as Sales2013,
    pvt.[2014] as Sales2014,
    pvt.[2015] as Sales2015,
    pvt.[2016] as Sales2016
FROM
    pvt
ORDER BY
    pvt.SalesForStockItemForYear DESC

SQL按别名的总和排序

4 个答案: