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#13' and p_type not like 'MEDIUM ANODIZED%' and p_size in (29, 16, 28, 10, 9, 49, 21, 46) 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=457150.87..457220.88 rows=28004 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=447334.65..455082.31 rows=28004 width=40) -> Sort (cost=447334.65..448828.17 rows=597410 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=58085.95..390018.05 rows=597410 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=54343.66..54343.66 rows=298705 width=40) -> Bitmap Heap Scan on part (cost=5777.98..54343.66 rows=298705 width=40) Recheck Cond: (p_size = ANY ('{29,16,28,10,9,49,21,46}'::integer[])) Filter: ((p_brand <> 'Brand#13'::bpchar) AND ((p_type)::text !~~ 'MEDIUM ANODIZED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5703.31 rows=321747 width=0) Index Cond: (p_size = ANY ('{29,16,28,10,9,49,21,46}'::integer[])) (17 rows) COMMIT; COMMIT