QUERY PLAN
GroupAggregate (cost=253.31..253.61 rows=15 width=36)
Group Key: client_id
-> Sort (cost=253.31..253.35 rows=15 width=9)
Sort Key: client_id
-> Seq Scan on tbl_reimbursements (cost=0.00..253.02 rows=15 width=9)
Filter: ((status = ANY ('{3,2}'::integer[])) AND (client_id = ANY ('{3337,2815,3336,3333,3338}'::integer[])))