QUERY PLAN
Aggregate (cost=168.16..168.17 rows=1 width=8)
-> Sort (cost=167.18..167.34 rows=65 width=623)
Sort Key: c.signed_at DESC, c.created_at DESC
-> HashAggregate (cost=164.57..165.22 rows=65 width=623)
Group Key: c.id
-> Hash Left Join (cost=85.65..164.41 rows=65 width=16)
Hash Cond: (client.sales_rep = sgr.sales_id)
-> Nested Loop Left Join (cost=83.51..161.68 rows=65 width=20)
-> Nested Loop (cost=83.23..130.56 rows=65 width=20)
-> Index Only Scan using tbl_suppliers_pkey on tbl_suppliers supplier (cost=0.28..8.29 rows=1 width=4)
Index Cond: (id = 138)
-> Hash Right Join (cost=82.95..121.62 rows=65 width=24)
Hash Cond: (pcr.contract_id = c.id)
-> Seq Scan on tbl_purchase_client_rels pcr (cost=0.00..33.11 rows=2111 width=8)
-> Hash (cost=82.14..82.14 rows=65 width=20)
-> Seq Scan on tbl_purchase_contracts c (cost=0.00..82.14 rows=65 width=20)
Filter: ((cost_type = ANY ('{1,2}'::integer[])) AND (supplier_id = 138))
-> Index Scan using tbl_clients_pkey on tbl_clients client (cost=0.28..0.48 rows=1 width=8)
Index Cond: (pcr.client_id = id)
-> Hash (cost=1.51..1.51 rows=51 width=4)
-> Seq Scan on tbl_sales_group_relationships sgr (cost=0.00..1.51 rows=51 width=4)