QUERY PLAN
Aggregate (cost=12.92..12.93 rows=1 width=8)
-> Limit (cost=12.81..12.83 rows=7 width=24)
-> Sort (cost=12.81..12.83 rows=7 width=24)
Sort Key: tbl_visit_object_histories.last_visit_at DESC
-> Seq Scan on tbl_visit_object_histories (cost=0.00..12.71 rows=7 width=24)
Filter: (user_id = 1000)