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SET intervalstyle = 'postgres_verbose'; WITH date_range AS (SELECT '2023-01-02 10:34:36'::timestamp AS start_date , '2023-01-10 15:12:24'::timestamp AS end_date), date_series AS (SELECT d as date , (CASE WHEN start_date::date = d THEN interval '1 day' + (d - start_date)::interval WHEN end_date::date = d THEN (end_date - d)::interval ELSE interval '1 day' END) AS working_time FROM date_range CROSS JOIN generate_series(start_date::date, end_date::timestamp, interval '1 day') d WHERE EXTRACT (ISODOW FROM d) BETWEEN 1 AND 5) SELECT COALESCE(SUM(working_time), interval '0 day') AS working_time FROM date_series;
SET
working_time
@ 6 days 4 hours 37 mins 48 secs
SELECT 1