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#23' and p_type not like 'STANDARD ANODIZED%' and p_size in (4, 10, 16, 36, 43, 32, 49, 21) 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=416784.35..416854.21 rows=27944 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=407007.09..414720.65 rows=27944 width=40) Group Key: part.p_brand, part.p_type, part.p_size -> Sort (cost=407007.09..408493.91 rows=594730 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=58061.60..349966.90 rows=594730 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=54319.59..54319.59 rows=298063 width=40) -> Bitmap Heap Scan on part (cost=5773.26..54319.59 rows=298063 width=40) Recheck Cond: (p_size = ANY ('{4,10,16,36,43,32,49,21}'::integer[])) Filter: ((p_brand <> 'Brand#23'::bpchar) AND ((p_type)::text !~~ 'STANDARD ANODIZED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5698.75 rows=320973 width=0) Index Cond: (p_size = ANY ('{4,10,16,36,43,32,49,21}'::integer[])) Planning time: 2.861 ms (19 rows) COMMIT; COMMIT