QUERY PLAN
GroupAggregate (cost=98.66..98.75 rows=5 width=12)
Group Key: case_id
-> Sort (cost=98.66..98.67 rows=5 width=4)
Sort Key: case_id
-> Seq Scan on tbl_pre_sales (cost=0.00..98.60 rows=5 width=4)
Filter: ((NOT is_draft) AND (case_id = ANY ('{9267,9266,9265,9264,9263}'::integer[])))