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WITH customer_approved AS ( SELECT 1 AS id, 1 AS request_id, 1 AS approver_id UNION ALL SELECT 2, 1, 2 UNION ALL SELECT 3, 1, 1 UNION ALL SELECT 4, 1, 1 ) SELECT ca1.id, ca1.request_id, ca1.approver_id FROM customer_approved ca1 INNER JOIN ( SELECT approver_id, MAX(id) AS max_id FROM customer_approved GROUP BY approver_id ) ca2 ON ca1.approver_id = ca2.approver_id AND ca1.id = ca2.max_id;
id
request_id
approver_id
2
1
2
4
1
1