QUERY PLAN
Limit (cost=2.95..3.00 rows=20 width=59)
-> Sort (cost=2.95..3.04 rows=38 width=59)
Sort Key: ticket_date, ticket_word, serial_no, id
-> HashAggregate (cost=1.57..1.95 rows=38 width=59)
Group Key: id
-> Seq Scan on tbl_ledger_tickets t (cost=0.00..1.48 rows=38 width=59)
Filter: (ledger_id = 1)