QUERY PLAN
Gather (cost=1000.42..10236.04 rows=1633 width=20)
Workers Planned: 1
-> Nested Loop (cost=0.42..9072.74 rows=961 width=20)
-> Parallel Seq Scan on tbl_unread_comments uc (cost=0.00..3501.26 rows=1158 width=20)
Filter: ((NOT is_read) AND (remind_user_id = 1001))
-> Index Scan using tbl_comments_pkey on tbl_comments c (cost=0.42..4.81 rows=1 width=4)
Index Cond: (id = uc.comment_id)
Filter: is_system