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#31' and p_type not like 'LARGE PLATED%' and p_size in (18, 15, 29, 40, 21, 13, 19, 42) 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=416395.80..416465.24 rows=27778 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=406660.47..414345.55 rows=27778 width=40) Group Key: part.p_brand, part.p_type, part.p_size -> Sort (cost=406660.47..408141.93 rows=592584 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=57957.72..349841.56 rows=592584 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=54237.85..54237.85 rows=296292 width=40) -> Bitmap Heap Scan on part (cost=5732.52..54237.85 rows=296292 width=40) Recheck Cond: (p_size = ANY ('{18,15,29,40,21,13,19,42}'::integer[])) Filter: ((p_brand <> 'Brand#31'::bpchar) AND ((p_type)::text !~~ 'LARGE PLATED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5658.45 rows=319333 width=0) Index Cond: (p_size = ANY ('{18,15,29,40,21,13,19,42}'::integer[])) Planning time: 5.150 ms (19 rows) COMMIT; COMMIT