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#32' and p_type not like 'MEDIUM ANODIZED%' and p_size in (10, 20, 27, 24, 14, 34, 18, 42) 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=416647.79..416717.44 rows=27858 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=406884.48..414591.06 rows=27858 width=40) Group Key: part.p_brand, part.p_type, part.p_size -> Sort (cost=406884.48..408370.08 rows=594240 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=57994.43..349894.83 rows=594240 width=40) Hash Cond: (partsupp.ps_partkey = part.p_partkey) -> Seq Scan on partsupp (cost=16.23..270974.23 rows=4000000 width=8) Filter: (NOT (hashed SubPlan 1)) SubPlan 1 -> Index Scan using supplier_s_suppkey_idx_like on supplier (cost=0.14..15.98 rows=100 width=4) -> Hash (cost=54263.85..54263.85 rows=297148 width=40) -> Bitmap Heap Scan on part (cost=5738.67..54263.85 rows=297148 width=40) Recheck Cond: (p_size = ANY ('{10,20,27,24,14,34,18,42}'::integer[])) Filter: ((p_brand <> 'Brand#32'::bpchar) AND ((p_type)::text !~~ 'MEDIUM ANODIZED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5664.39 rows=320127 width=0) Index Cond: (p_size = ANY ('{10,20,27,24,14,34,18,42}'::integer[])) Planning time: 2.819 ms (19 rows) COMMIT; COMMIT