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WITH folder_code AS ( SELECT 5333 AS folder_id, '12VA1r' AS code, '2018-05-02 12:37:00' AS deleted_at UNION ALL SELECT 5333, '12VA1', '2019-09-27 14:37:00' UNION ALL SELECT 5683, '11SR1-X', '2019-02-04 15:40:00' UNION ALL SELECT 5683, '12SR1-X', NULL ) SELECT f1.folder_id, f1.code, f1.deleted_at FROM folder_code f1 INNER JOIN ( SELECT folder_id, CASE WHEN COUNT(*) = COUNT(deleted_at) THEN MAX(deleted_at) END AS max_deleted_at FROM folder_code GROUP BY folder_id ) f2 ON f1.folder_id = f2.folder_id AND (f1.deleted_at = f2.max_deleted_at OR (f1.deleted_at IS NULL AND f2.max_deleted_at IS NULL));
folder_id
code
deleted_at
5333
12VA1
2019-09-27 14:37:00
5683
12SR1-X
null