超过 180 天未购买的商品需要返回最后购买日期答案

【问题标题】：Need to return last purchase date for items that have not been purchased for more than 180 days超过 180 天未购买的商品需要返回最后购买日期
【发布时间】：2013-09-26 03:43:41
【问题描述】：

为数据库中的慢动作者构建报告。我想知道 180 天内没有购买过的商品并显示最近的购买日期。日期以日期时间格式 mm/dd/yyyy HH:MM:SS.000 存储这是我最近的尝试，我正在尝试自学 sql 以帮助工作，因此感谢任何帮助和解释。数据库是 MS SQL。

SELECT
    Inventory.LocalSKU, 
    InventorySuppliers.SupplierSKU, 
    MAX([Order Details].DetailDate)

FROM            
    Inventory INNER JOIN
    InventorySuppliers ON Inventory.LocalSKU = InventorySuppliers.LocalSKU 
    INNER JOIN
    [Order Details] ON InventorySuppliers.LocalSKU = [Order Details].SKU 
    CROSS JOIN
    POHistory

WHERE     
    GETDATE() >= CONVERT(date,DATEADD(DAY,+30,[Order Details].DetailDate))
ORDER  BY
    [Order Details].DetailDate DESC

【问题讨论】：

能否提供数据库结构？
我正在从购买访问版本中选择这个数据库并尝试迁移我所要做的大部分只是表名。 stoneedge.com/docs/OrderManagerDevelopersGuideV59.pdf

标签： sql sql-server date datetime

【解决方案1】：

你可以试试：

SELECT
    Inventory.LocalSKU, 
    InventorySuppliers.SupplierSKU, 
    MAX([Order Details].DetailDate)

FROM            
    Inventory INNER JOIN
    InventorySuppliers ON Inventory.LocalSKU = InventorySuppliers.LocalSKU 
    INNER JOIN
    [Order Details] ON InventorySuppliers.LocalSKU = [Order Details].SKU 
    CROSS JOIN
    POHistory

WHERE     
    GETDATE() >= CONVERT(date,DATEADD(DAY,180,[Order Details].DetailDate))
    GROUP BY
            Inventory.LocalSKU, 
            InventorySuppliers.SupplierSKU, 
ORDER  BY
    MAX([Order Details].DetailDate) DESC

【讨论】：

您的 WHERE 子句将过滤掉超过 xx 天的订单。相反，您要做的是识别最后一次下单时间超过 xx 天的产品。
@PhilSandler 号码不正确，但与您的号码相同。
在分组之前过滤掉新记录不是更好吗（为了性能）？
感谢 Phil 和 Szymon。过滤后分组的好建议。我边走边学，非常感谢您的帮助。再次感谢。
它与我的 not 相同，并且 not 没有按照问题的要求进行操作。如果昨天订购了库存商品，它仍会在此查询中返回，因为它正在被过滤掉。

【解决方案2】：

类似这样的东西（未检查语法）：

SELECT
    Inventory.LocalSKU, 
    InventorySuppliers.SupplierSKU, 
    MAX([Order Details].DetailDate)

FROM            
    Inventory 
    INNER JOIN InventorySuppliers ON Inventory.LocalSKU = InventorySuppliers.LocalSKU 
    INNER JOIN [Order Details] ON InventorySuppliers.LocalSKU = [Order Details].SKU 
    CROSS JOIN POHistory --what is this here for?
GROUP BY
    Inventory.LocalSKU, 
    InventorySuppliers.SupplierSKU
HAVING     
    --your question said 180 days, but your code had 30 days?
    GETDATE() >= CONVERT(date,DATEADD(DAY,180,MAX([Order Details].DetailDate)))
ORDER  BY
    [Order Details].DetailDate DESC

【讨论】：

抱歉，我在测试时离开了三十天，看看我是否正确地影响了返回的值。 POHistory 是为了以后我可以查看上次为产品创建 PO 的时间，如果我可以让它工作的话。
我尝试了这段代码，它允许我使用 max 函数，但现在 HAVING 部分不再起作用，它返回与 MAX 之前相同的错误

【解决方案3】：

这是我最终用来识别慢速和零动者的完整代码，感谢大家的帮助。

    SELECT suppliers.suppliername, 
       inventory.localsku,
       inventorysuppliers.suppliersku,
       inventory.itemname, 
       inventory.Text2 as "Outlet",
       inventory.Text3 as "Season",
       inventory.Text5 as "Discount",
       inventory.qoh, 
       Max(CONVERT(DATE, [Order Details].detaildate)) AS [Last Ordered], 
       Max(CONVERT(DATE, pohistory.date))             AS [Last PO], 
       inventory.discontinued 
FROM   inventory 
       INNER JOIN inventorysuppliers 
               ON inventory.localsku = inventorysuppliers.localsku 
       INNER JOIN suppliers 
               ON inventorysuppliers.supplierid = suppliers.supplierid 
       INNER JOIN pohistory 
                    ON inventorysuppliers.suppliersku = pohistory.supplierssku 
       INNER JOIN [Order Details] 
                    ON inventorysuppliers.localsku = [Order Details].sku 
WHERE  ( Getdate() >= CONVERT(DATE, Dateadd(month, 6, [Order Details].detaildate)) ) 
       AND ( inventory.discontinued = 0 ) 
       AND ( Getdate() <= CONVERT(DATE, Dateadd(month, 5, pohistory.date)) )
       AND inventory.discontinued = 0 
OR
       ( [Order Details].detaildate IS NULL ) 
       AND ( inventory.discontinued = 0 ) 
       AND ( Getdate() <= CONVERT(DATE, Dateadd(month, 5, pohistory.date)) )
       AND inventory.discontinued = 0 

GROUP  BY inventory.localsku, 
          inventorysuppliers.suppliersku, 
          inventory.itemname, 
          suppliers.suppliername, 
          inventory.qoh, 
          inventory.discontinued, 
          inventory.Text2,
          inventory.Text3,
          inventory.Text5
HAVING    ( inventory.QOH > 0)

UNION

SELECT suppliers.suppliername, 
       inventory.localsku,
       inventorysuppliers.suppliersku,
       inventory.itemname, 
       inventory.Text2 as "Outlet",
       inventory.Text3 as "Season",
       inventory.Text5 as "Discount",
       inventory.qoh, 
       Max(CONVERT(DATE, [Order Details].detaildate)) AS [Last Ordered], 
       Max(CONVERT(DATE, pohistory.date))             AS [Last PO], 
       inventory.discontinued 
FROM   inventory 
       INNER JOIN inventorysuppliers 
               ON inventory.localsku = inventorysuppliers.localsku 
       INNER JOIN suppliers 
               ON inventorysuppliers.supplierid = suppliers.supplierid 
       INNER JOIN pohistory 
                    ON inventorysuppliers.suppliersku = pohistory.supplierssku 
       LEFT OUTER JOIN [Order Details] 
                    ON inventorysuppliers.localsku = [Order Details].sku 
WHERE      ( [Order Details].detaildate IS NULL ) 
       AND ( inventory.discontinued = 0 ) 
       AND ( Getdate() <= CONVERT(DATE, Dateadd(month, 5, pohistory.date)) )
       AND inventory.discontinued = 0 

GROUP  BY inventory.localsku, 
          inventorysuppliers.suppliersku, 
          inventory.itemname, 
          suppliers.suppliername, 
          inventory.qoh, 
          inventory.discontinued, 
          inventory.Text2,
          inventory.Text3,
          inventory.Text5
HAVING    ( inventory.QOH > 0)
ORDER  BY suppliers.suppliername

【讨论】：