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#21' and p_type not like 'LARGE BURNISHED%' and p_size in (15, 5, 23, 41, 8, 25, 37, 3) 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=417026.95..417096.85 rows=27960 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=407226.38..414961.95 rows=27960 width=40) Group Key: part.p_brand, part.p_type, part.p_size -> Sort (cost=407226.38..408717.57 rows=596478 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=58083.14..350005.92 rows=596478 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=54338.92..54338.92 rows=298239 width=40) -> Bitmap Heap Scan on part (cost=5777.75..54338.92 rows=298239 width=40) Recheck Cond: (p_size = ANY ('{15,5,23,41,8,25,37,3}'::integer[])) Filter: ((p_brand <> 'Brand#21'::bpchar) AND ((p_type)::text !~~ 'LARGE BURNISHED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5703.19 rows=321567 width=0) Index Cond: (p_size = ANY ('{15,5,23,41,8,25,37,3}'::integer[])) Planning time: 2.810 ms (19 rows) COMMIT; COMMIT