Question

这是我的起始查询，效果很好。

问题：我想在select中添加一些将MAX（c.Date）返回为[LastCostDate]作为结果的一部分。但显然，只是添加它本身需要我GROUP BY，但我不想。还有另一种方法可以实现这个目标吗？

SELECT
o.WorkOrder as [Work Order], o.ServiceSite as [Site], o.Description as [Description], o.LeadTechnician as [PM], r.Name as [PM Name], r.RevEmail as [PM Email], o.Notes as [Notes]
FROM
    SMWorkOrder o
    LEFT JOIN SMWorkCompleted c
            ON o.WorkOrder = c.WorkOrder
            AND c.Date >= DATEADD(WEEK,-2,CAST(GETDATE() AS DATE)) AND c.Date <= GETDATE()
            AND c.SMCo = 1
      LEFT JOIN HQRV r
            ON o.LeadTechnician = r.Reviewer
      LEFT JOIN SMInvoiceList l
            ON o.SMCo = l.SMCo
            AND o.WorkOrder = l.WorkOrder
WHERE
    c.WorkOrder is NULL
    AND o.SMCo = 1 AND o.WOStatus not in (1,2)
      AND o.EnteredDateTime <= DATEADD(WEEK,-2,CAST(GETDATE() AS DATE))

Answer 1

MAX (c.Date) OVER( ... )将为OVER中的条件返回max c.date（可以为空）

获取没有分组的最大日期 - 复杂查询

1 个答案: