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 'LARGE BURNISHED%' and p_size in (2, 12, 1, 9, 30, 27, 26, 29) 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=456035.69..456105.30 rows=27845 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=446333.36..453980.01 rows=27845 width=40) -> Sort (cost=446333.36..447807.00 rows=589456 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=57984.32..389836.88 rows=589456 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=54255.43..54255.43 rows=297004 width=40) -> Bitmap Heap Scan on part (cost=5735.76..54255.43 rows=297004 width=40) Recheck Cond: (p_size = ANY ('{2,12,1,9,30,27,26,29}'::integer[])) Filter: ((p_brand <> 'Brand#32'::bpchar) AND ((p_type)::text !~~ 'LARGE BURNISHED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5661.51 rows=319907 width=0) Index Cond: (p_size = ANY ('{2,12,1,9,30,27,26,29}'::integer[])) (17 rows) COMMIT; COMMIT