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11.1
11.5
12.1
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3.0
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5.0
10.2
10.3
10.4
10.5
10.6
10.7
10.8
10.9
10.11
11.4
11.8
12.3
5.5
5.6
5.7
8.0
8.4
9.7
11g Release 2
18c
21c
23ai
23c
26ai
8.4
9.3
9.4
9.5
9.6
10
11
12
13
14
15
16
17
18
19 beta 3
2012
2014
2016
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2017 (Linux)
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2025
3.8
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3.27
3.39
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3.53
2.11
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2.28
2.6
2.8
2.18
2024.2 LTS
2025.2 LTS
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Sakila
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AdventureWorks
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AdventureWorks
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AdventureWorks
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CREATE TABLE test (id CHAR(1), val INT); INSERT INTO test VALUES ('A', 1), ('A', 2), ('B', 3), ('B', 4); SELECT * FROM test;
id
val
A
1
A
2
B
3
B
4
SELECT id, STUFF((SELECT ',' + CAST(val AS VARCHAR) FROM test t2 WHERE t1.id = t2.id FOR XML PATH('')),1,1,'') vals FROM test t1 GROUP BY id;
id
vals
A
1,2
B
3,4