QUERY PLAN
Limit (cost=56.19..56.24 rows=20 width=107)
-> Sort (cost=56.19..57.63 rows=578 width=107)
Sort Key: r.created_at DESC
-> HashAggregate (cost=35.03..40.81 rows=578 width=107)
Group Key: r.id
-> Hash Right Join (cost=24.01..33.58 rows=578 width=107)
Hash Cond: (rvr.erp_ticket_change_log_id = r.id)
-> Seq Scan on tbl_erp_ticket_change_log_handlers rvr (cost=0.00..8.20 rows=520 width=4)
-> Hash (cost=16.78..16.78 rows=578 width=107)
-> Seq Scan on tbl_erp_ticket_change_logs r (cost=0.00..16.78 rows=578 width=107)