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#25' and p_type not like 'ECONOMY BRUSHED%' and p_size in (3, 11, 20, 48, 21, 37, 50, 8) 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=456330.19..456399.59 rows=27760 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=446601.22..454281.40 rows=27760 width=40) -> Sort (cost=446601.22..448081.74 rows=592206 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=57941.22..389821.28 rows=592206 width=40) Hash Cond: (partsupp.ps_partkey = part.p_partkey) -> Seq Scan on partsupp (cost=16.34..270974.34 rows=4000000 width=8) Filter: (NOT (hashed SubPlan 1)) SubPlan 1 -> Index Scan using supplier_s_suppkey_idx_like on supplier (cost=0.00..16.09 rows=100 width=4) -> Hash (cost=54223.60..54223.60 rows=296103 width=40) -> Bitmap Heap Scan on part (cost=5728.27..54223.60 rows=296103 width=40) Recheck Cond: (p_size = ANY ('{3,11,20,48,21,37,50,8}'::integer[])) Filter: ((p_brand <> 'Brand#25'::bpchar) AND ((p_type)::text !~~ 'ECONOMY BRUSHED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5654.25 rows=318933 width=0) Index Cond: (p_size = ANY ('{3,11,20,48,21,37,50,8}'::integer[])) (17 rows) COMMIT; COMMIT