QUERY PLAN
GroupAggregate (cost=112.95..113.00 rows=3 width=12)
Group Key: case_id
-> Sort (cost=112.95..112.96 rows=3 width=4)
Sort Key: case_id
-> Seq Scan on tbl_pre_sales (cost=0.00..112.93 rows=3 width=4)
Filter: ((created_by = 1015) AND (case_id = ANY ('{9243,9223,9227,9226,9202,9207,9192,9191,9187,9182}'::integer[])))