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#15' and p_type not like 'LARGE PLATED%' and p_size in (24, 32, 37, 14, 43, 45, 26, 10) 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=456540.52..456610.07 rows=27822 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=446789.34..454486.71 rows=27822 width=40) -> Sort (cost=446789.34..448273.17 rows=593532 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=57979.37..389872.69 rows=593532 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=54253.45..54253.45 rows=296766 width=40) -> Bitmap Heap Scan on part (cost=5735.28..54253.45 rows=296766 width=40) Recheck Cond: (p_size = ANY ('{24,32,37,14,43,45,26,10}'::integer[])) Filter: ((p_brand <> 'Brand#15'::bpchar) AND ((p_type)::text !~~ 'LARGE PLATED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5661.09 rows=319847 width=0) Index Cond: (p_size = ANY ('{24,32,37,14,43,45,26,10}'::integer[])) (17 rows) COMMIT; COMMIT