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#25' and p_type not like 'LARGE POLISHED%' and p_size in (8, 44, 16, 14, 32, 29, 35, 10) 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=416857.91..416927.69 rows=27911 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=407075.00..414796.89 rows=27911 width=40) Group Key: part.p_brand, part.p_type, part.p_size -> Sort (cost=407075.00..408563.56 rows=595422 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=58051.24..349963.46 rows=595422 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=54313.62..54313.62 rows=297711 width=40) -> Bitmap Heap Scan on part (cost=5771.80..54313.62 rows=297711 width=40) Recheck Cond: (p_size = ANY ('{8,44,16,14,32,29,35,10}'::integer[])) Filter: ((p_brand <> 'Brand#25'::bpchar) AND ((p_type)::text !~~ 'LARGE POLISHED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5697.37 rows=320793 width=0) Index Cond: (p_size = ANY ('{8,44,16,14,32,29,35,10}'::integer[])) Planning time: 3.078 ms (19 rows) COMMIT; COMMIT