QUERY PLAN
GroupAggregate (cost=5241.76..5244.56 rows=1 width=12)
Group Key: uc.object_id
-> Nested Loop (cost=5241.76..5244.55 rows=1 width=4)
-> Gather Merge (cost=5241.48..5243.13 rows=1 width=8)
Workers Planned: 1
-> Merge Join (cost=4241.47..4243.00 rows=1 width=8)
Merge Cond: (uc.object_id = rccr.reimbursement_id)
-> Sort (cost=4232.77..4233.66 rows=359 width=4)
Sort Key: uc.object_id
-> Parallel Seq Scan on tbl_unread_comments uc (cost=0.00..4217.53 rows=359 width=4)
Filter: ((NOT is_read) AND ((object_type)::text = '20'::text) AND (remind_user_id = 1001))
-> Sort (cost=8.70..8.70 rows=2 width=4)
Sort Key: rccr.reimbursement_id
-> Seq Scan on tbl_reimbursement_carbon_copy_rels rccr (cost=0.00..8.69 rows=2 width=4)
Filter: (user_id = 1001)
-> Index Scan using tbl_reimbursements_pkey on tbl_reimbursements r (cost=0.29..1.42 rows=1 width=4)
Index Cond: (id = uc.object_id)
Filter: (status <> 0)