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#52' and p_type not like 'PROMO ANODIZED%' and p_size in (38, 28, 35, 18, 26, 27, 32, 48) 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=417023.91..417093.81 rows=27960 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=407223.44..414958.92 rows=27960 width=40) Group Key: part.p_brand, part.p_type, part.p_size -> Sort (cost=407223.44..408714.62 rows=596470 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=58081.11..350003.81 rows=596470 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=54336.94..54336.94 rows=298235 width=40) -> Bitmap Heap Scan on part (cost=5777.27..54336.94 rows=298235 width=40) Recheck Cond: (p_size = ANY ('{38,28,35,18,26,27,32,48}'::integer[])) Filter: ((p_brand <> 'Brand#52'::bpchar) AND ((p_type)::text !~~ 'PROMO ANODIZED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5702.71 rows=321507 width=0) Index Cond: (p_size = ANY ('{38,28,35,18,26,27,32,48}'::integer[])) Planning time: 4.607 ms (19 rows) COMMIT; COMMIT