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#34' and p_type not like 'ECONOMY ANODIZED%' and p_size in (24, 43, 33, 48, 36, 35, 47, 5) 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=457304.16..457374.41 rows=28097 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=447471.45..455228.06 rows=28097 width=40) -> Sort (cost=447471.45..448966.58 rows=598051 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=58150.22..390088.73 rows=598051 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=54387.70..54387.70 rows=299695 width=40) -> Bitmap Heap Scan on part (cost=5788.37..54387.70 rows=299695 width=40) Recheck Cond: (p_size = ANY ('{24,43,33,48,36,35,47,5}'::integer[])) Filter: ((p_brand <> 'Brand#34'::bpchar) AND ((p_type)::text !~~ 'ECONOMY ANODIZED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5713.45 rows=323093 width=0) Index Cond: (p_size = ANY ('{24,43,33,48,36,35,47,5}'::integer[])) (17 rows) COMMIT; COMMIT