QUERY PLAN
Finalize Aggregate (cost=7613.21..7613.22 rows=1 width=8)
-> Gather (cost=7613.10..7613.21 rows=1 width=8)
Workers Planned: 1
-> Partial Aggregate (cost=6613.10..6613.11 rows=1 width=8)
-> Nested Loop (cost=0.42..6612.21 rows=356 width=0)
-> Parallel Seq Scan on tbl_unread_comments uc (cost=0.00..3784.44 rows=425 width=4)
Filter: ((NOT is_read) AND (remind_user_id = 1011))
-> Index Scan using tbl_comments_pkey on tbl_comments c (cost=0.42..6.65 rows=1 width=4)
Index Cond: (id = uc.comment_id)
Filter: is_system