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 'STANDARD POLISHED%' and p_size in (34, 49, 38, 4, 36, 15, 24, 27) 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=456900.29..456970.11 rows=27925 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=447112.33..454838.13 rows=27925 width=40) -> Sort (cost=447112.33..448601.64 rows=595724 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=58054.40..389969.64 rows=595724 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=54322.65..54322.65 rows=297862 width=40) -> Bitmap Heap Scan on part (cost=5772.97..54322.65 rows=297862 width=40) Recheck Cond: (p_size = ANY ('{34,49,38,4,36,15,24,27}'::integer[])) Filter: ((p_brand <> 'Brand#44'::bpchar) AND ((p_type)::text !~~ 'STANDARD POLISHED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5698.51 rows=321107 width=0) Index Cond: (p_size = ANY ('{34,49,38,4,36,15,24,27}'::integer[])) (17 rows) COMMIT; COMMIT