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Firebird
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Node.js
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TimescaleDB
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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)
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2022
2.11
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Sakila
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AdventureWorks
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AdventureWorks
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CREATE TABLE MyTable (`firstname` VARCHAR(5), `lastname` VARCHAR(3), UNIQUE(firstname, lastname));
✓
INSERT INTO MyTable (`firstname`, `lastname`) VALUES ('jack', 'woo'), ('james', 'poo'), ('james', 'woo'), ('john', 'poo');
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UPDATE MyTable AS t1 SET lastname = 'woo' WHERE t1.lastname = 'poo' AND NOT EXISTS (SELECT 1 FROM MyTable t2 WHERE (t2.firstname, t2.lastname) = (t1.firstname, 'woo'));
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DELETE FROM MyTable WHERE lastname = 'poo';
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SELECT * FROM MyTable;
firstname
lastname
jack
woo
james
woo
john
woo