QUERY PLAN
Aggregate (cost=7128.16..7128.18 rows=1 width=8)
-> Gather (cost=1000.00..7128.16 rows=1 width=0)
Workers Planned: 2
-> Parallel Seq Scan on tbl_comments (cost=0.00..6128.06 rows=1 width=0)
Filter: (((object_type)::text = '21'::text) AND (object_id = 588))