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#31' and p_type not like 'STANDARD ANODIZED%' and p_size in (2, 21, 35, 24, 1, 8, 33, 50) 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=416422.02..416491.49 rows=27787 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=406683.55..414371.04 rows=27787 width=40) Group Key: part.p_brand, part.p_type, part.p_size -> Sort (cost=406683.55..408165.47 rows=592770 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=57959.76..349845.46 rows=592770 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=54238.72..54238.72 rows=296385 width=40) -> Bitmap Heap Scan on part (cost=5732.72..54238.72 rows=296385 width=40) Recheck Cond: (p_size = ANY ('{2,21,35,24,1,8,33,50}'::integer[])) Filter: ((p_brand <> 'Brand#31'::bpchar) AND ((p_type)::text !~~ 'STANDARD ANODIZED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5658.63 rows=319360 width=0) Index Cond: (p_size = ANY ('{2,21,35,24,1,8,33,50}'::integer[])) Planning time: 11.333 ms (19 rows) COMMIT; COMMIT