QUERY PLAN
GroupAggregate (cost=447.66..448.01 rows=20 width=12)
Group Key: case_id
-> Sort (cost=447.66..447.71 rows=20 width=4)
Sort Key: case_id
-> Seq Scan on tbl_implement_records (cost=0.00..447.23 rows=20 width=4)
Filter: (case_id = ANY ('{8267,8264,8268,8266,8265,5051,8263,8262,8260,8246,8256,8257,8249,8215,8252,8259,8250,8258,8247,8255}'::integer[]))