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WITH data AS (SELECT '00000001' shift_id, TO_TIMESTAMP('2022-05-17 08:00:00', 'YYYY-MM-DD HH24:MI:SS') timestamp_oracle, '0001' type_ FROM DUAL UNION ALL SELECT '00000001', TO_TIMESTAMP('2022-05-17 09:00:00', 'YYYY-MM-DD HH24:MI:SS'), '0002' FROM DUAL UNION ALL SELECT '00000001', TO_TIMESTAMP('2022-05-17 09:15:00', 'YYYY-MM-DD HH24:MI:SS'), '0003' FROM DUAL UNION ALL SELECT '00000001', TO_TIMESTAMP('2022-05-17 12:00:00', 'YYYY-MM-DD HH24:MI:SS'), '0002' FROM DUAL UNION ALL SELECT '00000001', TO_TIMESTAMP('2022-05-17 13:00:00', 'YYYY-MM-DD HH24:MI:SS'), '0003' FROM DUAL UNION ALL SELECT '00000001', TO_TIMESTAMP('2022-05-17 15:00:00', 'YYYY-MM-DD HH24:MI:SS'), '0004' FROM DUAL), CALC AS (SELECT d.*, EXTRACT(DAY FROM timestamp_oracle - LAG(timestamp_oracle) OVER(PARTITION BY shift_id ORDER BY timestamp_oracle)) * 24 * 60 + EXTRACT(HOUR FROM timestamp_oracle - LAG(timestamp_oracle) OVER(PARTITION BY shift_id ORDER BY timestamp_oracle)) * 60 + EXTRACT(MINUTE FROM timestamp_oracle - LAG(timestamp_oracle) OVER(PARTITION BY shift_id ORDER BY timestamp_oracle)) tm FROM data d) SELECT shift_id, TRUNC(ROUND(SUM(CASE WHEN type_ <> '0003' then tm else null end))/ 60) || ':' || MOD(ROUND(SUM(CASE WHEN type_ <> '0003' then tm else null end)), 60) tot_tm from calc GROUP BY shift_id;
SHIFT_ID
TOT_TM
00000001
5:45