BEGIN; BEGIN EXPLAIN select p_brand, p_type, p_size, count(distinct ps_suppkey) as supplier_cnt from partsupp, part where p_partkey = ps_partkey and p_brand <> 'Brand#42' and p_type not like 'PROMO POLISHED%' and p_size in (34, 10, 17, 6, 7, 42, 36, 38) and ps_suppkey not in ( select s_suppkey from supplier where s_comment like '%Customer%Complaints%' ) group by p_brand, p_type, p_size order by supplier_cnt desc, p_brand, p_type, p_size; QUERY PLAN ------------------------------------------------------------------------------------------------------------------------------- Sort (cost=457135.16..457205.15 rows=27995 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=447322.15..455067.33 rows=27995 width=40) -> Sort (cost=447322.15..448815.20 rows=597218 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=58095.18..390025.36 rows=597218 width=40) Hash Cond: (partsupp.ps_partkey = part.p_partkey) -> Seq Scan on partsupp (cost=16.34..270974.34 rows=4000000 width=8) Filter: (NOT (hashed SubPlan 1)) SubPlan 1 -> Index Scan using supplier_s_suppkey_idx_like on supplier (cost=0.00..16.09 rows=100 width=4) -> Hash (cost=54346.23..54346.23 rows=298609 width=40) -> Bitmap Heap Scan on part (cost=5778.56..54346.23 rows=298609 width=40) Recheck Cond: (p_size = ANY ('{34,10,17,6,7,42,36,38}'::integer[])) Filter: ((p_brand <> 'Brand#42'::bpchar) AND ((p_type)::text !~~ 'PROMO POLISHED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5703.91 rows=321827 width=0) Index Cond: (p_size = ANY ('{34,10,17,6,7,42,36,38}'::integer[])) (17 rows) COMMIT; COMMIT