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CREATE TABLE y (room_id numeric(10,0) null, date_from datetime null, date_to datetime null, seq int null) INSERT y SELECT 2, '2023-05-01','2023-05-02',1 INSERT y SELECT 5, '2023-05-01','2023-05-02',1 INSERT y SELECT 8, '2023-05-01','2023-05-02',1 INSERT y SELECT 2, '2023-05-02','2023-05-03',2 INSERT y SELECT 8, '2023-05-02','2023-05-03',2 INSERT y SELECT 2, '2023-05-07','2023-05-09',3 SELECT DISTINCT date_from, date_to, seq INTO Period FROM y;
9 rows affected
SELECT y.room_id FROM y GROUP BY y.room_id HAVING COUNT_BIG(*) = (SELECT COUNT_BIG(*) FROM Period);
room_id
2