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 'LARGE PLATED%' and p_size in (17, 26, 40, 50, 47, 34, 8, 5) 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=457021.70..457091.80 rows=28043 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=447217.48..454949.97 rows=28043 width=40) -> Sort (cost=447217.48..448707.89 rows=596165 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=58109.65..390029.30 rows=596165 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=54362.17..54362.17 rows=299120 width=40) -> Bitmap Heap Scan on part (cost=5782.35..54362.17 rows=299120 width=40) Recheck Cond: (p_size = ANY ('{17,26,40,50,47,34,8,5}'::integer[])) Filter: ((p_brand <> 'Brand#44'::bpchar) AND ((p_type)::text !~~ 'LARGE PLATED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5707.57 rows=322313 width=0) Index Cond: (p_size = ANY ('{17,26,40,50,47,34,8,5}'::integer[])) (17 rows) COMMIT; COMMIT