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Developer-C 11.1
3.0
4.0
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10.6
10.7
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10.9
5.5
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11g Release 2
18c
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8.4
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10
11
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3.8
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3.27
3.39
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AdventureWorks
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create table tbl select * from( values row('A', 10, 'C', 15, 2), row('E', 21, 'G', 23, 7), row('C', 15, 'A', 10, 2), row('E', 22, 'G', 24, 7) ) t(G1 ,G2 ,G3 ,G4 , V )
select case when(g1 > g3) then g3 else g1 end g1, case when(g1 > g3) then g4 else g2 end g2, case when(g1 > g3) then g1 else g3 end g3, case when(g1 > g3) then g2 else g4 end g4, sum(V) from tbl group by case when(g1 > g3) then g3 else g1 end, case when(g1 > g3) then g4 else g2 end, case when(g1 > g3) then g1 else g3 end, case when(g1 > g3) then g2 else g4 end
g1
g2
g3
g4
sum(V)
A
10
C
15
4
E
21
G
23
7
E
22
G
24
7