QUERY PLAN
GroupAggregate (cost=108.84..109.02 rows=10 width=12)
Group Key: case_id
-> Sort (cost=108.84..108.87 rows=10 width=4)
Sort Key: case_id
-> Seq Scan on tbl_pre_sales (cost=0.00..108.67 rows=10 width=4)
Filter: ((NOT is_draft) AND (case_id = ANY ('{9259,9258,9250,9257,9256,9255,9249,9077,9243,9254}'::integer[])))