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#55' and p_type not like 'STANDARD POLISHED%' and p_size in (38, 26, 5, 6, 46, 43, 1, 8) 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=415096.48..415165.67 rows=27675 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=405493.05..413054.58 rows=27675 width=40) Group Key: part.p_brand, part.p_type, part.p_size -> Sort (cost=405493.05..406950.01 rows=582782 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=57898.29..349684.11 rows=582782 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=54192.07..54192.07 rows=295199 width=40) -> Bitmap Heap Scan on part (cost=5721.75..54192.07 rows=295199 width=40) Recheck Cond: (p_size = ANY ('{38,26,5,6,46,43,1,8}'::integer[])) Filter: ((p_brand <> 'Brand#55'::bpchar) AND ((p_type)::text !~~ 'STANDARD POLISHED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5647.95 rows=317933 width=0) Index Cond: (p_size = ANY ('{38,26,5,6,46,43,1,8}'::integer[])) Planning time: 2.831 ms (19 rows) COMMIT; COMMIT