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#41' and p_type not like 'LARGE PLATED%' and p_size in (45, 5, 41, 1, 38, 19, 28, 34) 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=416955.70..417025.55 rows=27941 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=407161.99..414892.25 rows=27941 width=40) Group Key: part.p_brand, part.p_type, part.p_size -> Sort (cost=407161.99..408652.16 rows=596068 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=58065.13..349983.81 rows=596068 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=54323.48..54323.48 rows=298034 width=40) -> Bitmap Heap Scan on part (cost=5774.16..54323.48 rows=298034 width=40) Recheck Cond: (p_size = ANY ('{45,5,41,1,38,19,28,34}'::integer[])) Filter: ((p_brand <> 'Brand#41'::bpchar) AND ((p_type)::text !~~ 'LARGE PLATED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5699.65 rows=321093 width=0) Index Cond: (p_size = ANY ('{45,5,41,1,38,19,28,34}'::integer[])) Planning time: 3.624 ms (19 rows) COMMIT; COMMIT