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#11' and p_type not like 'ECONOMY BRUSHED%' and p_size in (11, 23, 1, 32, 28, 27, 17, 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=416877.64..416947.44 rows=27918 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=407092.24..414816.05 rows=27918 width=40) Group Key: part.p_brand, part.p_type, part.p_size -> Sort (cost=407092.24..408581.17 rows=595570 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=58051.73..349965.43 rows=595570 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=54313.19..54313.19 rows=297785 width=40) -> Bitmap Heap Scan on part (cost=5771.69..54313.19 rows=297785 width=40) Recheck Cond: (p_size = ANY ('{11,23,1,32,28,27,17,34}'::integer[])) Filter: ((p_brand <> 'Brand#11'::bpchar) AND ((p_type)::text !~~ 'ECONOMY BRUSHED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5697.25 rows=320780 width=0) Index Cond: (p_size = ANY ('{11,23,1,32,28,27,17,34}'::integer[])) Planning time: 3.218 ms (19 rows) COMMIT; COMMIT