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Developer-C 11.1
3.0
4.0
10.2
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10.5
10.6
10.7
10.8
10.9
10.11
11.4
5.5
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18
11g Release 2
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8.4
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10
11
12
13
14
15
16
17
2012
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2019 (Linux)
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3.8
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3.27
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2.11
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WITH yourTable AS ( SELECT 1 AS EmployeeId, 'In' AS Action, '2019-04-01 12:00:00' AS Created UNION ALL SELECT 1, 'Out', '2019-04-01 15:00:00' UNION ALL SELECT 1, 'In', '2019-04-01 17:00:00' UNION ALL SELECT 1, 'Out', '2019-04-01 21:00:00' ), cte AS ( SELECT *, ROW_NUMBER() OVER (PARTITION BY EmployeeId, Action ORDER BY Created) rn FROM yourTable ), cte2 AS ( SELECT EmployeeId, rn, TIMESTAMPDIFF(HOUR, MAX(CASE WHEN Action = 'In' THEN Created END), MAX(CASE WHEN Action = 'Out' THEN Created END)) AS num_hours FROM cte GROUP BY EmployeeId, rn ) SELECT EmployeeId, SUM(num_hours) AS total_num_hours FROM cte2 GROUP BY EmployeeId;
EmployeeId
total_num_hours
1
7