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#22' and p_type not like 'MEDIUM POLISHED%' and p_size in (27, 3, 43, 33, 19, 48, 2, 35) 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=415931.60..416000.99 rows=27757 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=406243.25..413883.05 rows=27757 width=40) Group Key: part.p_brand, part.p_type, part.p_size -> Sort (cost=406243.25..407715.69 rows=588979 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=57948.13..349795.92 rows=588979 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=54231.08..54231.08 rows=296066 width=40) -> Bitmap Heap Scan on part (cost=5730.90..54231.08 rows=296066 width=40) Recheck Cond: (p_size = ANY ('{27,3,43,33,19,48,2,35}'::integer[])) Filter: ((p_brand <> 'Brand#22'::bpchar) AND ((p_type)::text !~~ 'MEDIUM POLISHED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5656.89 rows=319127 width=0) Index Cond: (p_size = ANY ('{27,3,43,33,19,48,2,35}'::integer[])) Planning time: 2.858 ms (19 rows) COMMIT; COMMIT