Question

我正在获取重复的数据行。

wh.whsheaderID不同，它对应于特定单位和特定参考（因此我的“重复值”）。然后我有一个不离开的日期时间，然后是THU离开的不同日期时间。

然而，因为有2个不同的wh.whsheaderID对应于相同的单位和相同的参考我得到2行数据，其中NOT出发日期＆amp;将填充扫描日期，并在下一行，THU出发日期＆amp;扫描时间将被填充。如何将这些信息整理成一行？

SELECT wh.WhsHeaderID,
        mu.Number AS Unit ,
        m.MovementRef AS Reference ,
        (SELECT CASE WHEN COUNT(*) >=2 THEN 'Yes' ELSE 'No' END FROM dbo.whsHeader WHERE RunMovID = m.movementId) AS [Co-Load],
        (Select wh.ArrDepDate where wh.localdepotcode = 'NOT')  AS [NOT Departure Date], 
        (Select wh.LastScannedTime where wh.LocalDepotCode = 'NOT') AS [NOT Last Scan] ,
        (Select wh.ArrDepDate where wh.LocalDepotCode = 'THU') as [THU Departure Date],
        (Select wh.LastScannedTime where wh.LocalDepotCode = 'THU') as [THU Last Scan],

Answer 1

使用条件聚合：

select 
    WhsHeaderId = min(wh.WhsHeaderID)
  , Unit = mu.Number
  , Reference = m.MovementRef
  , [Co-Load] = case when count(*) >=2 then 'Yes' else 'No' end 
  , [NOT Departure Date] = min(case when wh.localdepotcode = 'NOT' then wh.ArrDepDate end)
  , [NOT Last Scan]      = max(case when wh.localdepotcode = 'NOT' then wh.LastScannedTime end)
  , [THU Departure Date] = min(case when wh.localdepotcode = 'THU' then wh.ArrDepDate end)
  , [THU Last Scan]      = max(case when wh.localdepotcode = 'THU' then wh.LastScannedTime end)
  /* , other columns */ 
from ...
  inner join dbo.whsHeader wh
    on wh.RunMovID = m.movementId
group by 
    mu.Number
  , m.MovementRef
  /* , other non aggregated columns */

重复以及如何摆脱它们

1 个答案: