QUERY PLAN
Finalize Aggregate (cost=10998.97..10998.98 rows=1 width=8)
-> Gather (cost=10998.86..10998.97 rows=1 width=8)
Workers Planned: 1
-> Partial Aggregate (cost=9998.86..9998.87 rows=1 width=8)
-> Nested Loop (cost=0.42..9996.12 rows=1096 width=0)
-> Parallel Seq Scan on tbl_unread_comments uc (cost=0.00..3786.59 rows=1306 width=4)
Filter: ((NOT is_read) AND (remind_user_id = 1001))
-> Index Scan using tbl_comments_pkey on tbl_comments c (cost=0.42..4.75 rows=1 width=4)
Index Cond: (id = uc.comment_id)
Filter: is_system