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#35' and p_type not like 'SMALL POLISHED%' and p_size in (10, 29, 47, 35, 19, 44, 21, 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=416833.01..416902.76 rows=27900 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=407053.90..414772.88 rows=27900 width=40) Group Key: part.p_brand, part.p_type, part.p_size -> Sort (cost=407053.90..408541.90 rows=595198 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=58055.48..349965.46 rows=595198 width=40) Hash Cond: (partsupp.ps_partkey = part.p_partkey) -> Seq Scan on partsupp (cost=16.23..270974.23 rows=4000000 width=8) Filter: (NOT (hashed SubPlan 1)) SubPlan 1 -> Index Scan using supplier_s_suppkey_idx_like on supplier (cost=0.14..15.98 rows=100 width=4) -> Hash (cost=54319.26..54319.26 rows=297599 width=40) -> Bitmap Heap Scan on part (cost=5773.09..54319.26 rows=297599 width=40) Recheck Cond: (p_size = ANY ('{10,29,47,35,19,44,21,5}'::integer[])) Filter: ((p_brand <> 'Brand#35'::bpchar) AND ((p_type)::text !~~ 'SMALL POLISHED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5698.69 rows=320967 width=0) Index Cond: (p_size = ANY ('{10,29,47,35,19,44,21,5}'::integer[])) Planning time: 5.292 ms (19 rows) COMMIT; COMMIT