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 'LARGE ANODIZED%' and p_size in (29, 37, 26, 35, 34, 47, 25, 48) 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=457230.37..457300.44 rows=28027 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=447405.89..455159.94 rows=28027 width=40) -> Sort (cost=447405.89..448900.65 rows=597902 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=58101.52..390038.54 rows=597902 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=54348.30..54348.30 rows=298951 width=40) -> Bitmap Heap Scan on part (cost=5779.12..54348.30 rows=298951 width=40) Recheck Cond: (p_size = ANY ('{29,37,26,35,34,47,25,48}'::integer[])) Filter: ((p_brand <> 'Brand#42'::bpchar) AND ((p_type)::text !~~ 'LARGE ANODIZED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5704.39 rows=321887 width=0) Index Cond: (p_size = ANY ('{29,37,26,35,34,47,25,48}'::integer[])) (17 rows) COMMIT; COMMIT