Sql . 你太棒了。你能解释一下的意思吗？然后在INVOUTDATE的星期天，你能解释一下的意思吗？我想这是没用的。很抱歉，我把它拿走了。真高兴！我终于明白问题出在哪里了！您有数千行[DOCKETNO]=NULL，但是[ORDERDATE]和[INVOUTDAT

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. 你太棒了。你能解释一下

的意思吗？然后在
INVOUTDATE
的星期天，你能解释一下
的意思吗？我想这是没用的。很抱歉，我把它拿走了。真高兴！我终于明白问题出在哪里了！您有数千行
[DOCKETNO]=NULL
，但是
[ORDERDATE]
和
[INVOUTDATE]
不同，因此，问题是：如何处理？它们的顺序相同吗？是否按日期对其进行分组？是的，对其进行分组也是为了提取唯一值，但您共享的qry首先提取唯一值，然后计算提前期，然后计算提前期的平均值，但每次它都给我相同的输出，即使我更改了日期，并且输出为1.24因此，我先用不同的卷宗号计算提前期，然后从S表中选择提前期列，然后使用从D计算该提前期的平均值。谢谢，这将在将来帮助我。你只是gr8。仅凭你的逻辑，这是可能的。我很高兴能对你有所帮助：）
SELECT
Round(AVG(CAST(
Case when CONVERT(datetime, ORDERDATE, 105) = CONVERT(datetime, INVOUTDATE, 105) THEN 0 else
Case when CONVERT(datetime, ORDERDATE, 105) + 1 = CONVERT(datetime, INVOUTDATE, 105) THEN 1 else
(DATEDIFF(dd, CONVERT(datetime, ORDERDATE, 105), CONVERT(datetime, INVOUTDATE, 105)))
-(DATEDIFF(wk, CONVERT(datetime, ORDERDATE, 105), CONVERT(datetime, INVOUTDATE, 105))*1)
-(CASE WHEN DATENAME(dw, CONVERT(datetime, ORDERDATE, 105)) = 'Sunday' THEN 1 ELSE 0 END)
-(CASE WHEN DATENAME(dw, CONVERT(datetime, INVOUTDATE, 105)) = 'Sunday' THEN 0 ELSE 0 END) end end AS FLOAT)),4) AS LEADTIME FROM DSORDERSTATUS
WHERE ORDERTYPE <> 'Exchange Order' 
AND CONVERT(datetime, ORDERDATE, 105) between '20170801' and '20170831' 
AND CONVERT(datetime, INVOUTDATE, 105) IS NOT NULL

SELECT DISTINCT DOCKETNO,
Case when CONVERT(datetime, ORDERDATE, 105) = CONVERT(datetime, INVOUTDATE, 105) THEN 0 else
Case when CONVERT(datetime, ORDERDATE, 105) + 1 = CONVERT(datetime, INVOUTDATE, 105) THEN 1 else
(DATEDIFF(dd, CONVERT(datetime, ORDERDATE, 105), CONVERT(datetime, INVOUTDATE, 105)))
-(DATEDIFF(wk, CONVERT(datetime, ORDERDATE, 105), CONVERT(datetime, INVOUTDATE, 105))*1)
-(CASE WHEN DATENAME(dw, CONVERT(datetime, ORDERDATE, 105)) = 'Sunday' THEN 1 ELSE 0 END)
-(CASE WHEN DATENAME(dw, CONVERT(datetime, INVOUTDATE, 105)) = 'Sunday' THEN 0 ELSE 0 END) end end AS LEADTIME FROM DSORDERSTATUS
WHERE ORDERTYPE <> 'Exchange Order' 
AND CONVERT(datetime, ORDERDATE, 105) between '20170801' and '20170831' 
AND CONVERT(datetime, INVOUTDATE, 105) IS NOT NULL

WHERE   ORDERTYPE <> 'Exchange Order' 
AND CONVERT(date, ORDERDATE, 105) between '20170801' and '20170831' 
AND CONVERT(date, INVOUTDATE, 105) IS NOT NULL

;with
S AS (      
    select DOCKETNO, ORDERDATE, INVOUTDATE, COUNT(*) n
    from DSORDERSTATUS where ORDERTYPE <> 'Exchange Order' 
    group by DOCKETNO, ORDERDATE, INVOUTDATE
),
D as (
    select [DOCKETNO], [ORDERDATE], [INVOUTDATE],
        DATEDIFF(dd, CONVERT(date, [ORDERDATE], 105), CONVERT(date, [INVOUTDATE], 105)) dd,
        DATEDIFF(wk, CONVERT(date, [ORDERDATE], 105), CONVERT(date, [INVOUTDATE], 105)) wk,
        CASE WHEN DATEPART(dw, CONVERT(datetime, ORDERDATE, 105)) = 7 THEN 1 ELSE 0 END IsSundayOrd,
        CASE WHEN DATEPART(dw, CONVERT(datetime, INVOUTDATE, 105)) = 7 THEN 1 ELSE 0 END IsSundayInv
    from S
)
select avg(cast(dd - case when dd>1 then (wk +  IsSundayOrd + IsSundayInv) else 0 end as float)) leadtime
from D
where CONVERT(date, ORDERDATE, 105) between '20170801' and '20170831' 
    AND CONVERT(date, INVOUTDATE, 105) IS NOT NULL

;with
S AS (
SELECT DISTINCT DOCKETNO,
Case when CONVERT(datetime, ORDERDATE, 105) = CONVERT(datetime, INVOUTDATE, 105) THEN 0 else
Case when CONVERT(datetime, ORDERDATE, 105) + 1 = CONVERT(datetime, INVOUTDATE, 105) THEN 1 else
(DATEDIFF(dd, CONVERT(datetime, ORDERDATE, 105), CONVERT(datetime, INVOUTDATE, 105)))
-(DATEDIFF(wk, CONVERT(datetime, ORDERDATE, 105), CONVERT(datetime, INVOUTDATE, 105))*1)
-(CASE WHEN DATENAME(dw, CONVERT(datetime, ORDERDATE, 105)) = 'Sunday' THEN 1 ELSE 0 END)end end AS LEADTIME FROM DSORDERSTATUS
WHERE ORDERTYPE <> 'Exchange Order' 
AND CONVERT(datetime, ORDERDATE, 105) between '20170801' and '20170808' 
AND CONVERT(datetime, INVOUTDATE, 105) IS NOT NULL
),
D AS (
SELECT DOCKETNO, LEADTIME FROM S
)
SELECT AVG(CAST(LEADTIME AS FLOAT)) FROM D