QUERY PLAN
Aggregate (cost=6251.59..6251.60 rows=1 width=8)
-> Gather (cost=1000.00..6251.59 rows=1 width=0)
Workers Planned: 2
-> Parallel Seq Scan on tbl_comments (cost=0.00..5251.49 rows=1 width=0)
Filter: (((object_type)::text = '7'::text) AND (object_id = 3997))