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#15' and p_type not like 'LARGE POLISHED%' and p_size in (19, 33, 22, 47, 39, 23, 44, 4) 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=411843.95..411912.97 rows=27608 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=402243.44..409807.47 rows=27608 width=40) Group Key: part.p_brand, part.p_type, part.p_size -> Sort (cost=402243.44..403701.03 rows=583036 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=54619.98..346408.34 rows=583036 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=50922.70..50922.70 rows=294484 width=40) -> Bitmap Heap Scan on part (cost=2466.03..50922.70 rows=294484 width=40) Recheck Cond: (p_size = ANY ('{19,33,22,47,39,23,44,4}'::integer[])) Filter: ((p_brand <> 'Brand#15'::bpchar) AND ((p_type)::text !~~ 'LARGE POLISHED%'::text)) -> Bitmap Index Scan on part_p_size_brin_idx (cost=0.00..2392.41 rows=317387 width=0) Index Cond: (p_size = ANY ('{19,33,22,47,39,23,44,4}'::integer[])) Planning time: 2.754 ms (19 rows) COMMIT; COMMIT