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 PLATED%' and p_size in (36, 24, 8, 4, 32, 9, 25, 27) 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=416669.97..416739.63 rows=27864 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=406903.86..414612.75 rows=27864 width=40) Group Key: part.p_brand, part.p_type, part.p_size -> Sort (cost=406903.86..408389.91 rows=594420 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=57993.45..349895.65 rows=594420 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=54262.10..54262.10 rows=297210 width=40) -> Bitmap Heap Scan on part (cost=5738.27..54262.10 rows=297210 width=40) Recheck Cond: (p_size = ANY ('{36,24,8,4,32,9,25,27}'::integer[])) Filter: ((p_brand <> 'Brand#32'::bpchar) AND ((p_type)::text !~~ 'LARGE PLATED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5663.97 rows=320073 width=0) Index Cond: (p_size = ANY ('{36,24,8,4,32,9,25,27}'::integer[])) Planning time: 5.593 ms (19 rows) COMMIT; COMMIT