QUERY PLAN
GroupAggregate (cost=384.21..384.23 rows=1 width=12)
Group Key: case_id
-> Sort (cost=384.21..384.22 rows=1 width=4)
Sort Key: case_id
-> Seq Scan on tbl_implement_records (cost=0.00..384.20 rows=1 width=4)
Filter: ((created_by = 1000) AND (case_id = ANY ('{9259,9256,9255}'::integer[])))