QUERY PLAN
Finalize Aggregate (cost=7370.84..7370.85 rows=1 width=8)
-> Gather (cost=7370.72..7370.83 rows=1 width=8)
Workers Planned: 1
-> Partial Aggregate (cost=6370.72..6370.73 rows=1 width=8)
-> Nested Loop (cost=0.42..6370.57 rows=61 width=0)
-> Parallel Seq Scan on tbl_unread_comments uc (cost=0.00..3814.74 rows=376 width=4)
Filter: ((NOT is_read) AND (remind_user_id = 1013))
-> Index Scan using tbl_comments_pkey on tbl_comments c (cost=0.42..6.80 rows=1 width=4)
Index Cond: (id = uc.comment_id)
Filter: (NOT is_system)