QUERY PLAN
GroupAggregate (cost=398.67..398.84 rows=10 width=12)
Group Key: case_id
-> Sort (cost=398.67..398.69 rows=10 width=4)
Sort Key: case_id
-> Seq Scan on tbl_implement_records (cost=0.00..398.50 rows=10 width=4)
Filter: (case_id = ANY ('{8763,8693,8762,8761,8760,8758,8759,8754,8751,8755}'::integer[]))