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#12' and p_type not like 'SMALL POLISHED%' and p_size in (36, 29, 44, 43, 28, 33, 5, 12) 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=456754.00..456823.72 rows=27887 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=446979.73..454694.92 rows=27887 width=40) -> Sort (cost=446979.73..448466.99 rows=594906 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=58014.34..389921.40 rows=594906 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=54279.84..54279.84 rows=297453 width=40) -> Bitmap Heap Scan on part (cost=5741.51..54279.84 rows=297453 width=40) Recheck Cond: (p_size = ANY ('{36,29,44,43,28,33,5,12}'::integer[])) Filter: ((p_brand <> 'Brand#12'::bpchar) AND ((p_type)::text !~~ 'SMALL POLISHED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5667.15 rows=320653 width=0) Index Cond: (p_size = ANY ('{36,29,44,43,28,33,5,12}'::integer[])) (17 rows) COMMIT; COMMIT