Sql server SQL Server:限制数据范围

下面的查询应该显示两种产品的详细信息：DIS001和DIS002

如果是DIS002，则应“重置”查询，以便仅显示在DIS002售出日期之后售出的DIS001产品

老实说，我甚至不确定这是否可能。如有任何建议，我将不胜感激

SELECT DISTINCT 
    Sales.RaisedDateTime AS [Date],
    Contacts.ContactID AS [Contact ID],
    Contacts.SiteID AS [Site ID],
    Sales.ProductID AS [Product],
    CASE 
       WHEN Sales.ProductID = 'DIS002' 
          THEN Sales.RaisedDate 
          ELSE CONVERT(DATETIME, CONVERT(VARCHAR(10), '2019-10-28', 101) + ' 00:00:00') 
    END AS [Start Date] 
FROM 
    ((Bookings.Bookings Bookings
INNER JOIN 
    Contacts.Contacts Contacts ON (Bookings.ContactID = Contacts.ContactID))
INNER JOIN 
    Sales.Sales Sales ON (Bookings.ContactID = Sales.ContactID))
WHERE
    (Sales.ProductID = 'DIS001' AND 
     Sales.RaisedDate >= MAX([Start Date])

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有很多不同的语法可以解决这个问题，但这里有一个：

;with DIS002 as (
    select ContactID, max(RaisedDate) as DIS002Date 
    from Sales.Sales 
    where ProductID = 'DIS002'
    group by ContactID
)
SELECT DISTINCT 
    Sales.RaisedDateTime AS [Date],
    Contacts.ContactID AS [Contact ID],
    Contacts.SiteID AS [Site ID],
    Sales.ProductID AS [Product]
FROM 
    ((Bookings.Bookings Bookings
INNER JOIN 
    Contacts.Contacts Contacts ON (Bookings.ContactID = Contacts.ContactID))
INNER JOIN 
    Sales.Sales Sales ON (Bookings.ContactID = Sales.ContactID))
LEFT JOIN 
    DIS002 on DIS002.ContactID = Sales.ContactID
WHERE
    Sales.ProductID = 'DIS001' AND 
    Sales.RaisedDate >= isnull(DIS002date,'1900-01-01')

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样本数据和预期结果将有助于更好地理解您的问题。