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Firebird
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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
2.6
2.8
2.18
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Sakila
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AdventureWorks
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AdventureWorks
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WITH yourTable AS ( SELECT 'a' AS uid, '2020-12-31' AS data_date UNION ALL SELECT 'a', '2021-01-01' UNION ALL SELECT 'a', '2021-01-05' UNION ALL SELECT 'b', '2021-03-02' UNION ALL SELECT 'b', '2021-03-05' UNION ALL SELECT 'b', '2021-03-07' ) SELECT uid, DATEDIFF(data_date, (SELECT t2.data_date FROM yourTable t2 WHERE t2.uid = t1.uid AND t2.data_date < t1.data_date ORDER BY t2.data_date DESC LIMIT 1)) AS date_diff FROM yourTable t1 HAVING date_diff IS NOT NULL ORDER BY uid, data_date;
uid
date_diff
a
1
a
4
b
3
b
2