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Firebird
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MySQL
Node.js
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Developer-C 11.1
3.0
4.0
10.2
10.3
10.4
10.5
10.6
10.7
10.8
10.9
5.5
5.6
5.7
8.0
18
11g Release 2
18c
21c
23c
8.4
9.3
9.4
9.5
9.6
10
11
12
13
14
15
16
3.8
3.16
3.27
3.39
2012
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2017 (Linux)
2019
2019 (Linux)
2022
2.11
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2.8
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AdventureWorks
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Declare @Source Table ([ID] varchar(50),[TargetField] varchar(50)) Insert Into @Source Values (1,'Field1') ,(2,'Field2') ,(3,'Field1') Declare @YourTable Table ([ID] varchar(50),[Field1] varchar(50),[Field2] varchar(50)) Insert Into @YourTable Values (1,'A','B') ,(2,'R','C') ,(3,'X','D') Select A.[ID] ,C.* From @YourTable A Cross Apply ( values (cast((Select A.* for XML RAW) as xml))) B(XMLData) Cross Apply ( Select Item = xAttr.value('local-name(.)', 'varchar(100)') ,Value = xAttr.value('.','varchar(max)') From XMLData.nodes('//@*') xNode(xAttr) Where xAttr.value('local-name(.)','varchar(100)') not in ('Id','Other-Columns','To-Exclude') ) C Join @Source D on A.ID=D.ID and C.Item=D.TargetField
ID
Item
Value
1
Field1
A
2
Field2
C
3
Field1
X