组合查询会显示不正确的结果

Question

为代码的大片段道歉，但我需要显示它们以显示我编译的相关调查。

下面我有两个单独的查询，一个是从登台模式（ Staging.SabreAssignedCrew ）表检查特定航班中的机组成员，另一个是数据模式表的比较，在将所有相关表连接在一起后，我得到了工作人员每次航班的信息：

---

Staging.SabreAssignedCrew表

SELECT 
*
, Airline + CAST(FlightNumber AS VARCHAR) + Suffix AS StagingFlight 
, ROW_NUMBER() OVER(PARTITION BY Airline + CAST(FlightNumber AS VARCHAR) + Suffix  ORDER BY UpdateId DESC) AS StageRowNumber
FROM Staging.SabreAssignedCrew
WHERE Airline + CAST(FlightNumber AS VARCHAR) + Suffix = 'LS627' AND DepartureDate = '2016-09-04'

---

Data模式表

SELECT 
cd.CrewUpdateID
, cd.IsPassive
, cd.CrewBase
, cd.CrewCategory
, cd.CrewType
, cd.EmployeeNumber
, cd.FirstName
, cd.LastName
, c.UpdateID
, c.LegKey
, c.UpdateReceived
, DataFlight
, l.ScheduledDepartureDate
, l.ScheduledDepartureAirport
FROM 
(SELECT *, ROW_NUMBER() OVER(PARTITION BY LegKey ORDER BY UpdateID DESC) AS RowNumber FROM Data.Crew) c
INNER JOIN 
Data.CrewDetail cd
ON c.UpdateID = cd.CrewUpdateID
AND cd.IsPassive = 0
AND RowNumber = 1
INNER JOIN 
(SELECT *, Carrier + CAST(FlightNumber AS VARCHAR) + Suffix AS DataFlight FROM Data.Leg) l
ON c.LegKey = l.LegKey
WHERE DataFlight = 'LS627' AND ScheduledDepartureDate = '2016-09-04'

两次查询的结果显示，航班上有6名机组人员（6排）：

现在我要做的是将查询合并到一个使用并执行SUM以确保正确的机组成员在飞行中。 但是，结果不正确，因为它输出如下：

我们知道该航班中有6名机组成员，因此它应显示登台模式2 StagingCabinCrew和4 StagingCockpitCrew以及数据模式的完全相同的值。 这全部由登台和数据模式表中的CrewType字段确定。

我假设我在组合查询中做错了但我不确定它是什么，因为在组合查询中单独运行上面提到的两个查询会显示正确的结果，但执行整个组合查询会显示错误的值。 需要修复什么？

WITH CTE AS (
SELECT 
cd.CrewUpdateID
, cd.IsPassive
, cd.CrewBase
, cd.CrewCategory
, cd.CrewType
, cd.EmployeeNumber
, cd.FirstName
, cd.LastName
, c.UpdateID
, c.LegKey
, c.UpdateReceived
, DataFlight
, l.ScheduledDepartureDate
, l.ScheduledDepartureAirport
FROM 
(SELECT *, ROW_NUMBER() OVER(PARTITION BY LegKey ORDER BY UpdateID DESC) AS RowNumber FROM Data.Crew) c
INNER JOIN 
Data.CrewDetail cd
ON c.UpdateID = cd.CrewUpdateID
AND cd.IsPassive = 0
AND RowNumber = 1
INNER JOIN 
(SELECT *, Carrier + CAST(FlightNumber AS VARCHAR) + Suffix AS DataFlight FROM Data.Leg) l
ON c.LegKey = l.LegKey
WHERE DataFlight = 'LS627' AND ScheduledDepartureDate = '2016-09-04'
)
SELECT
StagingFlight
, sac.DepartureDate
, sac.DepartureAirport
, cte.DataFlight
, cte.ScheduledDepartureDate
, cte.ScheduledDepartureAirport
, SUM(CASE WHEN sac.CREWTYPE = 'F' THEN 1 ELSE 0 END) AS StagingCabinCrew
, SUM(CASE WHEN sac.CREWTYPE = 'C' THEN 1 ELSE 0 END) AS StagingCockpitCrew
, SUM(CASE WHEN cte.CrewType = 'F' THEN 1 ELSE 0 END) AS DataCabinCrew
, SUM(CASE WHEN cte.CrewType = 'C' THEN 1 ELSE 0 END) AS DataCockpitCrew
FROM 
(
SELECT 
*
, Airline + CAST(FlightNumber AS VARCHAR) + Suffix AS StagingFlight 
, ROW_NUMBER() OVER(PARTITION BY Airline + CAST(FlightNumber AS VARCHAR) + Suffix  ORDER BY UpdateId DESC) AS StageRowNumber
FROM Staging.SabreAssignedCrew--
WHERE Airline + CAST(FlightNumber AS VARCHAR) + Suffix = 'LS627' AND DepartureDate = '2016-09-04') 
sac

LEFT JOIN CTE cte
ON StagingFlight = DataFlight
AND sac.DepartureDate = cte.ScheduledDepartureDate
AND sac.DepartureAirport = cte.ScheduledDepartureAirport
AND sac.CREWTYPE = cte.CrewType
WHERE StagingFlight = 'LS627' AND DepartureDate = '2016-09-04' AND StageRowNumber = 1

GROUP BY 
StagingFlight
, sac.DepartureDate
, sac.DepartureAirport
, cte.DataFlight
, cte.ScheduledDepartureDate
, cte.ScheduledDepartureAirport

Answer 1

1. 为stagingflight创建列（您可能会使用apropriete索引）。 请始终设置varchar的大小（例如varchar - > varchar（30））。

    alter table staging.sabreassignedcrew add stagingflight as cast(airline + cast(flightnumber as varchar(5)) + suffix as varchar(25)) persisted 

2. 创建视图。

    CREATE VIEW Staging.vw_SabreAssignedCrewCount AS SELECT StagingFlight, DepartureDate, COUNT(DISTINCT CASE WHEN sac.CREWTYPE = 'F' THEN EmployeeNumber END) AS StagingCabinCrewCnt, COUNT(DISTINCT CASE WHEN sac.CREWTYPE = 'C' THEN EmployeeNumber END) AS StagingCockpitCrewCnt FROM Staging.SabreAssignedCrew GROUP BY StagingFlight, DepartureDate 

第二个表的第二个视图。

3. 你不需要rownumbers，CTE。 只能轻松加入2个分组选择。