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#23' and p_type not like 'ECONOMY ANODIZED%' and p_size in (34, 45, 23, 4, 1, 20, 33, 43) 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=415843.11..415912.47 rows=27743 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=406163.95..413795.70 rows=27743 width=40) Group Key: part.p_brand, part.p_type, part.p_size -> Sort (cost=406163.95..407634.81 rows=588346 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=57940.39..349781.85 rows=588346 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=54225.16..54225.16 rows=295920 width=40) -> Bitmap Heap Scan on part (cost=5729.49..54225.16 rows=295920 width=40) Recheck Cond: (p_size = ANY ('{34,45,23,4,1,20,33,43}'::integer[])) Filter: ((p_brand <> 'Brand#23'::bpchar) AND ((p_type)::text !~~ 'ECONOMY ANODIZED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5655.51 rows=318947 width=0) Index Cond: (p_size = ANY ('{34,45,23,4,1,20,33,43}'::integer[])) Planning time: 2.986 ms (19 rows) COMMIT; COMMIT