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#51' and p_type not like 'MEDIUM BRUSHED%' and p_size in (35, 19, 49, 37, 5, 24, 47, 2) 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=416574.33..416643.91 rows=27832 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=406819.73..414519.70 rows=27832 width=40) Group Key: part.p_brand, part.p_type, part.p_size -> Sort (cost=406819.73..408304.06 rows=593732 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=57987.14..349882.46 rows=593732 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=54260.09..54260.09 rows=296866 width=40) -> Bitmap Heap Scan on part (cost=5737.76..54260.09 rows=296866 width=40) Recheck Cond: (p_size = ANY ('{35,19,49,37,5,24,47,2}'::integer[])) Filter: ((p_brand <> 'Brand#51'::bpchar) AND ((p_type)::text !~~ 'MEDIUM BRUSHED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5663.55 rows=320013 width=0) Index Cond: (p_size = ANY ('{35,19,49,37,5,24,47,2}'::integer[])) Planning time: 3.557 ms (19 rows) COMMIT; COMMIT