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#55' and p_type not like 'STANDARD PLATED%' and p_size in (38, 40, 3, 6, 36, 19, 21, 1) 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=457017.80..457087.73 rows=27970 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=447215.93..454952.00 rows=27970 width=40) -> Sort (cost=447215.93..448707.21 rows=596509 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=58069.19..389992.28 rows=596509 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=54331.46..54331.46 rows=298340 width=40) -> Bitmap Heap Scan on part (cost=5775.13..54331.46 rows=298340 width=40) Recheck Cond: (p_size = ANY ('{38,40,3,6,36,19,21,1}'::integer[])) Filter: ((p_brand <> 'Brand#55'::bpchar) AND ((p_type)::text !~~ 'STANDARD PLATED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5700.55 rows=321373 width=0) Index Cond: (p_size = ANY ('{38,40,3,6,36,19,21,1}'::integer[])) (17 rows) COMMIT; COMMIT