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#32' and p_type not like 'LARGE ANODIZED%' and p_size in (46, 7, 34, 15, 41, 28, 10, 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=457063.80..457133.75 rows=27977 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=447257.29..454997.43 rows=27977 width=40) -> Sort (cost=447257.29..448749.36 rows=596830 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=58074.22..390000.52 rows=596830 width=40) Hash Cond: (partsupp.ps_partkey = part.p_partkey) -> Seq Scan on partsupp (cost=8.48..270966.48 rows=4000000 width=8) Filter: (NOT (hashed SubPlan 1)) SubPlan 1 -> Index Scan using supplier_s_suppkey_idx_like on supplier (cost=0.00..8.45 rows=10 width=4) -> Hash (cost=54335.55..54335.55 rows=298415 width=40) -> Bitmap Heap Scan on part (cost=5776.05..54335.55 rows=298415 width=40) Recheck Cond: (p_size = ANY ('{46,7,34,15,41,28,10,50}'::integer[])) Filter: ((p_brand <> 'Brand#32'::bpchar) AND ((p_type)::text !~~ 'LARGE ANODIZED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5701.45 rows=321500 width=0) Index Cond: (p_size = ANY ('{46,7,34,15,41,28,10,50}'::integer[])) (17 rows) COMMIT; COMMIT