QUERY PLAN
Limit (cost=45.66..45.69 rows=10 width=428)
-> Sort (cost=45.66..45.76 rows=38 width=428)
Sort Key: s.created_at DESC
-> HashAggregate (cost=44.18..44.84 rows=38 width=428)
Group Key: s.id
-> Hash Right Join (cost=27.73..41.83 rows=940 width=408)
Hash Cond: (thrs.task_group_id = s.id)
-> Seq Scan on tbl_task_group_head_of_relationships thrs (cost=0.00..5.70 rows=370 width=4)
-> Hash (cost=25.03..25.03 rows=216 width=408)
-> Nested Loop (cost=5.68..25.03 rows=216 width=408)
-> Index Scan using tbl_users_pkey on tbl_users u (cost=0.14..8.16 rows=1 width=4)
Index Cond: (id = 1000)
Filter: (department_id = 10)
-> Hash Right Join (cost=5.54..14.70 rows=216 width=408)
Hash Cond: (turs.task_group_id = s.id)
-> Seq Scan on tbl_task_group_user_relationships turs (cost=0.00..7.83 rows=483 width=4)
-> Hash (cost=5.06..5.06 rows=38 width=408)
-> Seq Scan on tbl_task_groups s (cost=0.00..5.06 rows=38 width=408)
Filter: (head_of = 1000)