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Developer-C 11.1
3.0
4.0
10.2
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10.4
10.5
10.6
10.7
10.8
10.9
5.5
5.6
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18
11g Release 2
18c
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8.4
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10
11
12
13
14
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16
3.8
3.16
3.27
3.39
2012
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2022
2.11
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2.6
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with your_table as ( select 'A' AS UID, null as nodeID union select 'B' AS UID, 1 as nodeID union select 'C' AS UID, 2 as nodeID union select 'D' AS UID, 1 as nodeID ) select UID, nodeID, case when nodeID is null then UID else (select group_concat(UID) from your_table b where b.nodeID = a.nodeID group by nodeID) end as hhID from your_table a
UID
nodeID
hhID
A
A
B
1
B,D
C
2
C
D
1
B,D