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#41' and p_type not like 'STANDARD ANODIZED%' and p_size in (21, 50, 44, 14, 47, 23, 35, 15) 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=416566.10..416635.68 rows=27830 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=406812.04..414511.64 rows=27830 width=40) Group Key: part.p_brand, part.p_type, part.p_size -> Sort (cost=406812.04..408296.30 rows=593704 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=57982.62..349877.66 rows=593704 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=54255.74..54255.74 rows=296852 width=40) -> Bitmap Heap Scan on part (cost=5736.74..54255.74 rows=296852 width=40) Recheck Cond: (p_size = ANY ('{21,50,44,14,47,23,35,15}'::integer[])) Filter: ((p_brand <> 'Brand#41'::bpchar) AND ((p_type)::text !~~ 'STANDARD ANODIZED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5662.53 rows=319880 width=0) Index Cond: (p_size = ANY ('{21,50,44,14,47,23,35,15}'::integer[])) Planning time: 2.857 ms (19 rows) COMMIT; COMMIT