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#44' and p_type not like 'PROMO POLISHED%' and p_size in (6, 36, 43, 22, 44, 37, 20, 48) 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=456535.08..456604.93 rows=27942 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=446782.37..454471.54 rows=27942 width=40) -> Sort (cost=446782.37..448264.32 rows=592780 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=58057.45..389943.25 rows=592780 width=40) Hash Cond: (partsupp.ps_partkey = part.p_partkey) -> Seq Scan on partsupp (cost=8.48..270966.48 rows=4000000 width=8) Filter: (NOT (hashed SubPlan 1)) SubPlan 1 -> Index Scan using supplier_s_suppkey_idx_like on supplier (cost=0.00..8.45 rows=10 width=4) -> Hash (cost=54323.37..54323.37 rows=298048 width=40) -> Bitmap Heap Scan on part (cost=5773.20..54323.37 rows=298048 width=40) Recheck Cond: (p_size = ANY ('{6,36,43,22,44,37,20,48}'::integer[])) Filter: ((p_brand <> 'Brand#44'::bpchar) AND ((p_type)::text !~~ 'PROMO POLISHED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5698.69 rows=321127 width=0) Index Cond: (p_size = ANY ('{6,36,43,22,44,37,20,48}'::integer[])) (17 rows) COMMIT; COMMIT