Question

很抱歉下面的冗长查询，数据库的组织方式和我的小SQL知识，这是我能让它玩得很好的唯一方法。所以数据库有一个字段TicketDate，其中我需要MAX值。但是，它被定义为char（8）变量而不是datetime。因此，获取MAX并不像MAX(TicketDate as DATETIME)那么简单，它实际上并不会产生最大日期。

查询可单独运作：

--***SUB QUERY (TimeTicketDet)
        SELECT DISTINCT
            cast(TicketDate as DATE) as MAXtt,
            tt.JobNo
        FROM TimeTicketDet as tt

        ORDER BY
            cast(TicketDate as DATE) DESC OFFSET 0 ROWS

但是，当添加到主查询中时，我会为每个TimeTicketEntry获取重复的行。查询工作正常，没有最后一个子查询（没有重复）--***SUB QUERY (TimeTicketDet)。 JobNo是TimeTicketDet表的唯一标识符，用作链接。

DECLARE @now DATETIME
DECLARE @90daysago DATETIME

SET @now = GETDATE()
SET @90daysago = DATEADD(day, -90, @now)


SELECT
    o.PartNo,
    o.JobNo,
    ord.DateEnt,
    por.MAXPONum,
    po.DateEnt,
    tt.MAXtt,
    r.ReceiveDate,

            CASE
            WHEN po.DateEnt >= r.ReceiveDate AND po.DateEnt >= tt.MAXtt THEN cast(po.DateEnt as DATE)
            WHEN r.ReceiveDate >= po.DateEnt AND r.ReceiveDate >= tt.MAXtt THEN cast(r.ReceiveDate as DATE)
            WHEN tt.MAXtt >= po.DateEnt AND tt.MAXtt >= r.ReceiveDate THEN cast(tt.MAXtt as DATE)
            ELSE po.DateEnt
            END AS MostRecentDate,

    POProrate.TotalCost,
    WIPProrate.WIPProrateCost,
    (POProrate.TotalCost+WIPProrate.WIPProrateCost) as ProratedCost,
    (ROUND(cast((o.QtyToMake - o.QtyShipped2Stock) as FLOAT)/o.QtyToMake,3))*(POProrate.TotalCost+WIPProrate.WIPProrateCost) as TotalProratedCost

FROM
--***MAIN QUERY (OrderDet)***
    OrderDet as o

--***SUB QUERY (Order)***
    JOIN
        (
            SELECT
                cast(DateEnt as DATE) as DateEnt,
                OrderNo
            FROM
                Orders
        ) ord
        ON ord.OrderNo = o.OrderNo


--***SUB QUERY (POReleases)***
    JOIN
        (
            SELECT
                MAX(PONum) as MAXPONum,
                JobNo
            FROM
                POReleases
            GROUP BY
                JobNo
        ) por
        ON por.JobNo = o.JobNo

--***SUB QUERY (PO)***
    JOIN
        (
            SELECT
                PONum,
                cast(DateEnt as DATE) as DateEnt
            FROM
                PO
        ) po
        ON po.PONum = por.MAXPONum

--***SUB QUERY (TimeTicketDet)
    JOIN
        (
            SELECT DISTINCT
            cast(TicketDate as DATE) as MAXtt,
            tt.JobNo
        FROM TimeTicketDet as tt

        ORDER BY
            cast(TicketDate as DATE) DESC OFFSET 0 ROWS
        ) tt
        ON tt.JobNo = o.JobNo

--***SUB QUERY (Receiver)
    JOIN
        (
            SELECT
                rd.JobNo,
                cast(MAX(r.ReceiveDate) as DATE) as ReceiveDate
            FROM
                Receiver as r
            INNER JOIN
                ReceiverDet as rd ON r.PONum = rd.PONum
            GROUP BY
                rd.JobNo

        ) r
        ON r.JobNo = o.JobNo

--***SUB QUERY (POProrate)***
    JOIN
        (
            SELECT
                j.JobNo,
                SUM(j.TotalCost) as TotalCost

            FROM
                (   
                    SELECT
                            por.JobNo,
                    CASE
                        WHEN pod.Unit = 'LOT' THEN SUM(pod.UnitCost*1)
                        ELSE SUM(por.Qty*pod.UnitCost)
                    END as TotalCost
                    FROM
                        PODet as pod
                    INNER JOIN
                        POReleases as por ON pod.PONum = por.PONum and pod.partno=por.partno
                    GROUP BY por.JobNo, pod.Unit

                ) j

            GROUP BY j.JobNo
        ) POProrate
        ON o.JobNo = POProrate.JobNo

--***SUB QUERY (WIPProrate)***
    JOIN
        (
            SELECT
                j.JobNo,
                SUM(j.ProratedCost) as WIPProrateCost

            FROM
                (
                    SELECT
                        tt.StepNo,
                        tt.JobNo,
                        tt.ActualPayRate,
                        tt.BurdenRate,
                        tt.CycleTime,
                        tt.SetupTime,
                        tt.CycleTime + tt.SetupTime as TotalTime,
                        (tt.CycleTime + tt.SetupTime) * tt.ActualPayRate as LaborCost,
                        (tt.CycleTime + tt.SetupTime) * tt.BurdenRate as BurdenCost,
                        ((tt.CycleTime + tt.SetupTime) * tt.ActualPayRate) + ((tt.CycleTime + tt.SetupTime) * tt.BurdenRate) as ProratedCost
                    FROM
                        TimeTicketDet as tt
                ) j

            GROUP BY j.JobNo
        ) WIPProrate
        ON WIPProrate.JobNo = o.JobNo

WHERE
    o.Status = 'Open'
    AND o.JobNo <> ''
    AND ord.DateEnt <= @90daysago
    AND po.DateEnt <= @90daysago
    AND tt.MAXtt <= @90daysago
    AND r.ReceiveDate <= @90daysago

查询的目标是找到所有相关日期，＆lt; = 90天之后，添加到列表中。我所缺少的是最后一个日期，它将从TimeTicketDet表中提取正确的TicketDate并将其加入JobNo。

我很乐意添加或删除所要求的任何信息。

Answer 1

尝试将子查询更改为：

SELECT MAX(CAST(TicketDate as DATE)) as MaxTT,
       JobNo
FROM TimeTicketDet as tt
GROUP BY JobNo

我认为您当前的查询必须为任何给定的MaxTT

返回多个JobNo日期

子查询产生重复

1 个答案: