QUERY PLAN
GroupAggregate (cost=111.01..111.03 rows=1 width=12)
Group Key: case_id
-> Sort (cost=111.01..111.02 rows=1 width=4)
Sort Key: case_id
-> Seq Scan on tbl_pre_sales (cost=0.00..111.00 rows=1 width=4)
Filter: ((created_by = 1000) AND (case_id = ANY ('{5069,5051,5039,5030,5027,5001,4996,4985,4975,4724}'::integer[])))