How/where 我使用 PIVOT 吗？
How/where do I use PIVOT?
我有一个 table 的数据，显示单个数据的多行。在下面的示例中，我有一个名为“位置类型”的列，其中显示“BH”和“TPI”。 BH 和 TPI 各有一个特定位置，显示在“位置”列中。我不想要 BH 和 TPI 的新行，而是想要两个新列来显示该行的位置数据。我在下面包含了几行数据。我怀疑我需要在这里使用 PIVOT，但我一直很难弄清楚 PIVOT 需要在哪里使用。有人可以提供一些指导或给我一个解决方案吗？
这是查询中的数据示例。
API14
First Prod Date
Location Type
Location
43013540070000
2/8/2021
BH
Township 3S Range 4W Section 17 DUCHESNE County
43013540070000
2/8/2021
TPI
Township 3S Range 4W Section 18 DUCHESNE County
这是我希望看到的格式：
API14
First Prod Date
BH Location
TPI Location
43013540070000
2/8/2021
Township 3S Range 4W Section 17 DUCHESNE County
Township 3S Range 4W Section 18 DUCHESNE County
到目前为止，这是我的代码：
DECLARE @SearchYear AS VARCHAR(4) = '2021'
DECLARE @SearchMonth AS VARCHAR(2) = '6'
SELECT
dbo.BuildAPI14(Well.WellID, Construct.SideTrack, Construct.Completion) AS 'API14',
CAST(ConstructDate.EventDate AS DATE) AS 'First Prod Date',
Loc.LocType AS 'Location Type',
CONCAT('Township ',LocExt.Township,LocExt.TownshipDir,' ','Range ',LocExt.Range,LocExt.RangeDir,' Section ',LocExt.Sec,' ',RefCounty.CountyName,' County') AS 'Location',
tblAPDTracker.SpacingRule AS 'Spacing Rule',
Lease.Number AS 'Entity Number',
WellHistory.WHComments AS 'Well History Comments'
FROM Well
LEFT JOIN Construct ON Construct.WellKey = Well.PKey
LEFT JOIN ConstructReservoir ON ConstructReservoir.ConstructKey = Construct.PKey
LEFT JOIN Lease ON Lease.Pkey = ConstructReservoir.LeaseKey
LEFT JOIN WellHistory ON WellHistory.WellKey = Construct.WellKey
LEFT JOIN tblAPDTracker ON LEFT(tblAPDTracker.APINO,10) = Well.WellID
LEFT JOIN Loc ON loc.ConstructKey = Construct.PKey AND Loc.LocType IN ('BH','TPI')
LEFT JOIN LocExt ON LocExt.LocKey = Loc.PKey
LEFT JOIN ConstructDate ON ConstructDate.ConstructKey = Construct.PKey AND ConstructDate.Event = 'FirstProduction'
LEFT JOIN RefCounty ON RefCounty.PKey = LocExt.County
WHERE
WorkType = 'ENTITY' AND
WellHistory.ModifyUser = 'UTAH\rachelmedina' AND
YEAR(WellHistory.ModifyDate) = @SearchYear AND
MONTH(WellHistory.ModifyDate) = @SearchMonth
GROUP BY
Well.WellID,
Construct.SideTrack,
Construct.Completion,
ConstructDate.EventDate,
Loc.LocType,
LocExt.Township,
LocExt.TownshipDir,
LocExt.Range,
LocExt.RangeDir,
LocExt.Sec,
RefCounty.CountyName,
tblAPDTracker.SpacingRule,
Lease.Number,
WellHistory.WHComments,
WellHistory.ModifyDate
ORDER BY
Well.WellId,
WellHistory.ModifyDate DESC
Select *
from
(
SELECT
dbo.BuildAPI14(Well.WellID, Construct.SideTrack, Construct.Completion) AS 'API14',
CAST(ConstructDate.EventDate AS DATE) AS 'First Prod Date',
Loc.LocType AS 'Location Type',
CONCAT('Township ',LocExt.Township,LocExt.TownshipDir,' ','Range ',LocExt.Range,LocExt.RangeDir,' Section ',LocExt.Sec,' ',RefCounty.CountyName,' County') AS 'Location' --,
-- tblAPDTracker.SpacingRule AS 'Spacing Rule',
-- Lease.Number AS 'Entity Number',
-- WellHistory.WHComments AS 'Well History Comments'
FROM Well
LEFT JOIN Construct ON Construct.WellKey = Well.PKey
LEFT JOIN ConstructReservoir ON ConstructReservoir.ConstructKey = Construct.PKey
LEFT JOIN Lease ON Lease.Pkey = ConstructReservoir.LeaseKey
LEFT JOIN WellHistory ON WellHistory.WellKey = Construct.WellKey
LEFT JOIN tblAPDTracker ON LEFT(tblAPDTracker.APINO,10) = Well.WellID
LEFT JOIN Loc ON loc.ConstructKey = Construct.PKey AND Loc.LocType IN ('BH','TPI')
LEFT JOIN LocExt ON LocExt.LocKey = Loc.PKey
LEFT JOIN ConstructDate ON ConstructDate.ConstructKey = Construct.PKey AND ConstructDate.Event = 'FirstProduction'
LEFT JOIN RefCounty ON RefCounty.PKey = LocExt.County
WHERE
WorkType = 'ENTITY' AND
WellHistory.ModifyUser = 'UTAH\rachelmedina' AND
YEAR(WellHistory.ModifyDate) = @SearchYear AND
MONTH(WellHistory.ModifyDate) = @SearchMonth
GROUP BY
Well.WellID,
Construct.SideTrack,
Construct.Completion,
ConstructDate.EventDate,
Loc.LocType,
LocExt.Township,
LocExt.TownshipDir,
LocExt.Range,
LocExt.RangeDir,
LocExt.Sec,
RefCounty.CountyName,
tblAPDTracker.SpacingRule,
Lease.Number,
WellHistory.WHComments,
WellHistory.ModifyDate
) p
pivot (min(p.Location) for [Location Type] in ([TPI], [BH])) pvt
旋转列中的值需要一个聚合运算符（sum、avg、min、max 等），所以选择一个像 min 或 max 这样的运算符，它们不会尝试对字符串做任何事情，但如果您在旋转列中多次出现（位置在这里）。
我还注释掉了未出现在您的示例结果中的所选列，这可能会影响需要出现在 GROUP BY 子句中的内容。
枢轴的另一种替代方法是使用不同的别名重新加入 tables 以区分“BH”与“TPI”实例。我还简化了较长的 table 名称，使用短别名“w”表示 Well，“wh”表示 wellhouse 等
此外，通过查看 A -> B -> C -> D tables 的层次结构有助于确定相关组件的位置。然后我把那些复制下来用于位置。
我删除了位置类型作为列和分组依据，因为查询分别同时连接到 BH 和 TPI。
DECLARE @SearchYear AS VARCHAR(4) = '2021'
DECLARE @SearchMonth AS VARCHAR(2) = '6'
SELECT
dbo.BuildAPI14(w.WellID, c.SideTrack, c.Completion) API14,
CAST(cd.EventDate AS DATE) 'First Prod Date',
CONCAT('Township ', LocExtBH.Township, LocExtBH.TownshipDir,
' ','Range ', LocExtBH.Range, LocExtBH.RangeDir,
' Section ', LocExtBH.Sec,
' ', rcBH.CountyName, ' County') 'BH Location',
CONCAT('Township ', LocExtTPI.Township, LocExtTPI.TownshipDir,
' ','Range ', LocExtTPI.Range, LocExtTPI.RangeDir,
' Section ', LocExtTPI.Sec,
' ', rcTPI.CountyName, ' County') 'TPI Location',
ADP.SpacingRule 'Spacing Rule',
l.Number 'Entity Number',
wh.WHComments 'Well History Comments'
FROM
Well w
LEFT JOIN tblAPDTracker ADP
ON w.WellID = LEFT(trk.APINO,10)
LEFT JOIN Construct c
ON w.PKey = c.WellKey
LEFT JOIN ConstructReservoir cr
ON c.PKey = cr.ConstructKey
LEFT JOIN Lease l
ON cr.LeaseKey = l.Pkey
LEFT JOIN WellHistory wh
ON c.WellKey = wh.WellKey
LEFT JOIN ConstructDate cd
ON c.PKey = cd.ConstructKey
AND cd.Event = 'FirstProduction'
LEFT JOIN Loc LocBH
ON c.PKey = locBH.ConstructKey
AND LocBH.LocType = 'BH'
LEFT JOIN LocExt LocExtBH
ON LocBH.PKey = LocExtBH.LocKey
LEFT JOIN RefCounty rcBH
ON LocExtBH.County = rcBH.PKey
LEFT JOIN Loc LocTPI
ON c.PKey = LocTPI.ConstructKey
AND LocTPI.LocType = 'TPI'
LEFT JOIN LocExt LocExtTPI
ON LocTPI.PKey = LocExtTPI.LocKey
LEFT JOIN RefCounty rcTPI
ON LocExtTPI.County = rcTPI.PKey
WHERE
w.WorkType = 'ENTITY'
AND wh.ModifyUser = 'UTAH\rachelmedina'
AND YEAR(wh.ModifyDate) = @SearchYear
AND MONTH(wh.ModifyDate) = @SearchMonth
GROUP BY
w.WellID,
c.SideTrack,
c.Completion,
cd.EventDate,
LocExtBH.Township,
LocExtBH.TownshipDir,
LocExtBH.Range,
LocExtBH.RangeDir,
LocExtBH.Sec,
rcBH.CountyName,
ADP.SpacingRule,
l.Number,
wh.WHComments,
wh.ModifyDate
ORDER BY
w.WellId,
wh.ModifyDate DESC
我有一个 table 的数据，显示单个数据的多行。在下面的示例中，我有一个名为“位置类型”的列，其中显示“BH”和“TPI”。 BH 和 TPI 各有一个特定位置，显示在“位置”列中。我不想要 BH 和 TPI 的新行，而是想要两个新列来显示该行的位置数据。我在下面包含了几行数据。我怀疑我需要在这里使用 PIVOT，但我一直很难弄清楚 PIVOT 需要在哪里使用。有人可以提供一些指导或给我一个解决方案吗？
这是查询中的数据示例。
| API14 | First Prod Date | Location Type | Location |
|---|---|---|---|
| 43013540070000 | 2/8/2021 | BH | Township 3S Range 4W Section 17 DUCHESNE County |
| 43013540070000 | 2/8/2021 | TPI | Township 3S Range 4W Section 18 DUCHESNE County |
这是我希望看到的格式：
| API14 | First Prod Date | BH Location | TPI Location |
|---|---|---|---|
| 43013540070000 | 2/8/2021 | Township 3S Range 4W Section 17 DUCHESNE County | Township 3S Range 4W Section 18 DUCHESNE County |
到目前为止，这是我的代码：
DECLARE @SearchYear AS VARCHAR(4) = '2021'
DECLARE @SearchMonth AS VARCHAR(2) = '6'
SELECT
dbo.BuildAPI14(Well.WellID, Construct.SideTrack, Construct.Completion) AS 'API14',
CAST(ConstructDate.EventDate AS DATE) AS 'First Prod Date',
Loc.LocType AS 'Location Type',
CONCAT('Township ',LocExt.Township,LocExt.TownshipDir,' ','Range ',LocExt.Range,LocExt.RangeDir,' Section ',LocExt.Sec,' ',RefCounty.CountyName,' County') AS 'Location',
tblAPDTracker.SpacingRule AS 'Spacing Rule',
Lease.Number AS 'Entity Number',
WellHistory.WHComments AS 'Well History Comments'
FROM Well
LEFT JOIN Construct ON Construct.WellKey = Well.PKey
LEFT JOIN ConstructReservoir ON ConstructReservoir.ConstructKey = Construct.PKey
LEFT JOIN Lease ON Lease.Pkey = ConstructReservoir.LeaseKey
LEFT JOIN WellHistory ON WellHistory.WellKey = Construct.WellKey
LEFT JOIN tblAPDTracker ON LEFT(tblAPDTracker.APINO,10) = Well.WellID
LEFT JOIN Loc ON loc.ConstructKey = Construct.PKey AND Loc.LocType IN ('BH','TPI')
LEFT JOIN LocExt ON LocExt.LocKey = Loc.PKey
LEFT JOIN ConstructDate ON ConstructDate.ConstructKey = Construct.PKey AND ConstructDate.Event = 'FirstProduction'
LEFT JOIN RefCounty ON RefCounty.PKey = LocExt.County
WHERE
WorkType = 'ENTITY' AND
WellHistory.ModifyUser = 'UTAH\rachelmedina' AND
YEAR(WellHistory.ModifyDate) = @SearchYear AND
MONTH(WellHistory.ModifyDate) = @SearchMonth
GROUP BY
Well.WellID,
Construct.SideTrack,
Construct.Completion,
ConstructDate.EventDate,
Loc.LocType,
LocExt.Township,
LocExt.TownshipDir,
LocExt.Range,
LocExt.RangeDir,
LocExt.Sec,
RefCounty.CountyName,
tblAPDTracker.SpacingRule,
Lease.Number,
WellHistory.WHComments,
WellHistory.ModifyDate
ORDER BY
Well.WellId,
WellHistory.ModifyDate DESC
Select *
from
(
SELECT
dbo.BuildAPI14(Well.WellID, Construct.SideTrack, Construct.Completion) AS 'API14',
CAST(ConstructDate.EventDate AS DATE) AS 'First Prod Date',
Loc.LocType AS 'Location Type',
CONCAT('Township ',LocExt.Township,LocExt.TownshipDir,' ','Range ',LocExt.Range,LocExt.RangeDir,' Section ',LocExt.Sec,' ',RefCounty.CountyName,' County') AS 'Location' --,
-- tblAPDTracker.SpacingRule AS 'Spacing Rule',
-- Lease.Number AS 'Entity Number',
-- WellHistory.WHComments AS 'Well History Comments'
FROM Well
LEFT JOIN Construct ON Construct.WellKey = Well.PKey
LEFT JOIN ConstructReservoir ON ConstructReservoir.ConstructKey = Construct.PKey
LEFT JOIN Lease ON Lease.Pkey = ConstructReservoir.LeaseKey
LEFT JOIN WellHistory ON WellHistory.WellKey = Construct.WellKey
LEFT JOIN tblAPDTracker ON LEFT(tblAPDTracker.APINO,10) = Well.WellID
LEFT JOIN Loc ON loc.ConstructKey = Construct.PKey AND Loc.LocType IN ('BH','TPI')
LEFT JOIN LocExt ON LocExt.LocKey = Loc.PKey
LEFT JOIN ConstructDate ON ConstructDate.ConstructKey = Construct.PKey AND ConstructDate.Event = 'FirstProduction'
LEFT JOIN RefCounty ON RefCounty.PKey = LocExt.County
WHERE
WorkType = 'ENTITY' AND
WellHistory.ModifyUser = 'UTAH\rachelmedina' AND
YEAR(WellHistory.ModifyDate) = @SearchYear AND
MONTH(WellHistory.ModifyDate) = @SearchMonth
GROUP BY
Well.WellID,
Construct.SideTrack,
Construct.Completion,
ConstructDate.EventDate,
Loc.LocType,
LocExt.Township,
LocExt.TownshipDir,
LocExt.Range,
LocExt.RangeDir,
LocExt.Sec,
RefCounty.CountyName,
tblAPDTracker.SpacingRule,
Lease.Number,
WellHistory.WHComments,
WellHistory.ModifyDate
) p
pivot (min(p.Location) for [Location Type] in ([TPI], [BH])) pvt
旋转列中的值需要一个聚合运算符（sum、avg、min、max 等），所以选择一个像 min 或 max 这样的运算符，它们不会尝试对字符串做任何事情，但如果您在旋转列中多次出现（位置在这里）。
我还注释掉了未出现在您的示例结果中的所选列，这可能会影响需要出现在 GROUP BY 子句中的内容。
枢轴的另一种替代方法是使用不同的别名重新加入 tables 以区分“BH”与“TPI”实例。我还简化了较长的 table 名称，使用短别名“w”表示 Well，“wh”表示 wellhouse 等
此外，通过查看 A -> B -> C -> D tables 的层次结构有助于确定相关组件的位置。然后我把那些复制下来用于位置。
我删除了位置类型作为列和分组依据，因为查询分别同时连接到 BH 和 TPI。
DECLARE @SearchYear AS VARCHAR(4) = '2021'
DECLARE @SearchMonth AS VARCHAR(2) = '6'
SELECT
dbo.BuildAPI14(w.WellID, c.SideTrack, c.Completion) API14,
CAST(cd.EventDate AS DATE) 'First Prod Date',
CONCAT('Township ', LocExtBH.Township, LocExtBH.TownshipDir,
' ','Range ', LocExtBH.Range, LocExtBH.RangeDir,
' Section ', LocExtBH.Sec,
' ', rcBH.CountyName, ' County') 'BH Location',
CONCAT('Township ', LocExtTPI.Township, LocExtTPI.TownshipDir,
' ','Range ', LocExtTPI.Range, LocExtTPI.RangeDir,
' Section ', LocExtTPI.Sec,
' ', rcTPI.CountyName, ' County') 'TPI Location',
ADP.SpacingRule 'Spacing Rule',
l.Number 'Entity Number',
wh.WHComments 'Well History Comments'
FROM
Well w
LEFT JOIN tblAPDTracker ADP
ON w.WellID = LEFT(trk.APINO,10)
LEFT JOIN Construct c
ON w.PKey = c.WellKey
LEFT JOIN ConstructReservoir cr
ON c.PKey = cr.ConstructKey
LEFT JOIN Lease l
ON cr.LeaseKey = l.Pkey
LEFT JOIN WellHistory wh
ON c.WellKey = wh.WellKey
LEFT JOIN ConstructDate cd
ON c.PKey = cd.ConstructKey
AND cd.Event = 'FirstProduction'
LEFT JOIN Loc LocBH
ON c.PKey = locBH.ConstructKey
AND LocBH.LocType = 'BH'
LEFT JOIN LocExt LocExtBH
ON LocBH.PKey = LocExtBH.LocKey
LEFT JOIN RefCounty rcBH
ON LocExtBH.County = rcBH.PKey
LEFT JOIN Loc LocTPI
ON c.PKey = LocTPI.ConstructKey
AND LocTPI.LocType = 'TPI'
LEFT JOIN LocExt LocExtTPI
ON LocTPI.PKey = LocExtTPI.LocKey
LEFT JOIN RefCounty rcTPI
ON LocExtTPI.County = rcTPI.PKey
WHERE
w.WorkType = 'ENTITY'
AND wh.ModifyUser = 'UTAH\rachelmedina'
AND YEAR(wh.ModifyDate) = @SearchYear
AND MONTH(wh.ModifyDate) = @SearchMonth
GROUP BY
w.WellID,
c.SideTrack,
c.Completion,
cd.EventDate,
LocExtBH.Township,
LocExtBH.TownshipDir,
LocExtBH.Range,
LocExtBH.RangeDir,
LocExtBH.Sec,
rcBH.CountyName,
ADP.SpacingRule,
l.Number,
wh.WHComments,
wh.ModifyDate
ORDER BY
w.WellId,
wh.ModifyDate DESC