是否可以将第二个 where 条件添加到 select 相同的数据，但来自其他日期范围？

Question

我在 SQL 服务器中有两个表。

我想 select DeptCode、DeptName、YearToDate、PeriodToDate（例如 2 个月）并按 DeptCode 分组。有一个我想要得到的结果：

在 YTD 列中，我想获得自 01/01/actualYear 以来的总成本。
在 PTD 列中，我想获得最近两个月的总和。

我创建了一段代码来显示正确的 YTD 成本，但我不知道如何添加下一个代码以获得其他日期范围的总成本。可以这样做吗？

SELECT  
    d.DeptCode,
    d.DeptName,
    SUM(s.TotalCost) as YTD
FROM [Departments] AS d
INNER JOIN Shipments AS s
ON d.DeptCode= s.DeptCode
WHERE s.ShipmentDate BETWEEN DateAdd(yyyy, DateDiff(yyyy, 0, GetDate()), 0) 
AND GETDATE()
GROUP BY d.DeptCode, d.DeptName

Answer 1

如果不在两个月的范围内，只需再添加一列 returns 0，例如SUM(CASE WHEN (date check) THEN (amount) ELSE 0 END)。查看第五行：

SELECT  
    d.DeptCode,
    d.DeptName,
    SUM(s.TotalCost) as YTD,
    SUM(CASE WHEN DateDiff(MONTH, s.ShipmentDate, GetDate()) < 2 THEN s.TotalCost ELSE 0 END) PTD,
FROM [Departments] AS d
INNER JOIN Shipments AS s
ON d.DeptCode= s.DeptCode
WHERE s.ShipmentDate BETWEEN DateAdd(yyyy, DateDiff(yyyy, 0, GetDate()), 0) 
AND GETDATE()
GROUP BY d.DeptCode, d.DeptName

Answer 2

您的预期输出与 2 个月不符，但这是完成您想要的任务的代码。您只需在第二个条件上添加 SUM(CASE...)。

SELECT  
    d.DeptCode,
    d.DeptName,
    SUM(s.TotalCost) as YTD,
    SUM(CASE WHEN s.ShipmentDate >= DATEADD(month, -2, GETDATE()) then s.TotalCost else 0 END) as PTD

FROM [Departments] AS d
INNER JOIN Shipments AS s
ON d.DeptCode= s.DeptCode
WHERE Year(s.ShipmentDate) = Year(GETDATE())
GROUP BY d.DeptCode, d.DeptName

Answer 3

试试这个：

nbr_last2month_ AS
(
SELECT DISTINCT 
   Sum(s.[TotalCost]) AS 'PTD', 
   s.DeptCode, 
   s.DeptName
 FROM    [Shipements] s
         LEFT JOIN [Departements] d ON d.[DeptCode] = s.[DeptCode] 
 WHERE   Year(date_) LIKE Year(GETDATE()) 
         AND MONTH(ShipementDate) LIKE Month(Getdate()) - 2
 Group by DeptCode
),

nbr_YTD_ AS
(
SELECT DISTINCT 
   Sum(s.[TotalCost]) AS 'YTD', 
   s.DeptCode, 
   s.DeptName
 FROM    [Shipements] s
         LEFT JOIN [Departements] d ON d.[DeptCode] = s.[DeptCode]
 WHERE    Year(ShipementDate) LIKE Year(GETDATE()) 
 Group by DeptCode
),

SELECT 
   A.DeptCode,
   A.DeptName,
   YTD,
   PTD
FROM   nbr_YTD_ A
       LEFT JOIN nbr_last2month_ B on B.DeptCode = A.DeptCode
ORDER BY DeptCode

是否可以将第二个 where 条件添加到 select 相同的数据，但来自其他日期范围？

Is it possible to add second where condition to select this same data but from other date range?

sql

tsql

sql-server

select

where-clause