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#51' and p_type not like 'STANDARD ANODIZED%' and p_size in (35, 12, 48, 22, 43, 8, 25, 50) 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=456034.30..456104.10 rows=27919 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=446333.90..453972.63 rows=27919 width=40) -> Sort (cost=446333.90..447805.81 rows=588763 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=58063.20..389908.83 rows=588763 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=54324.38..54324.38 rows=297799 width=40) -> Bitmap Heap Scan on part (cost=5773.38..54324.38 rows=297799 width=40) Recheck Cond: (p_size = ANY ('{35,12,48,22,43,8,25,50}'::integer[])) Filter: ((p_brand <> 'Brand#51'::bpchar) AND ((p_type)::text !~~ 'STANDARD ANODIZED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5698.93 rows=321160 width=0) Index Cond: (p_size = ANY ('{35,12,48,22,43,8,25,50}'::integer[])) (17 rows) COMMIT; COMMIT