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 BRUSHED%' and p_size in (33, 14, 21, 13, 18, 2, 24, 39) 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=416143.54..416212.80 rows=27701 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=406435.85..414099.54 rows=27701 width=40) Group Key: part.p_brand, part.p_type, part.p_size -> Sort (cost=406435.85..407913.19 rows=590934 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=57919.69..349787.03 rows=590934 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=54210.13..54210.13 rows=295467 width=40) -> Bitmap Heap Scan on part (cost=5725.95..54210.13 rows=295467 width=40) Recheck Cond: (p_size = ANY ('{33,14,21,13,18,2,24,39}'::integer[])) Filter: ((p_brand <> 'Brand#55'::bpchar) AND ((p_type)::text !~~ 'STANDARD BRUSHED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5652.09 rows=318487 width=0) Index Cond: (p_size = ANY ('{33,14,21,13,18,2,24,39}'::integer[])) Planning time: 4.454 ms (19 rows) COMMIT; COMMIT