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#55' and p_type not like 'ECONOMY BURNISHED%' and p_size in (43, 41, 39, 36, 29, 5, 50, 48) 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=456464.31..456534.06 rows=27900 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=446717.35..454404.17 rows=27900 width=40) -> Sort (cost=446717.35..448198.91 rows=592626 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=58009.85..389894.11 rows=592626 width=40) Hash Cond: (partsupp.ps_partkey = part.p_partkey) -> Seq Scan on partsupp (cost=8.48..270966.48 rows=4000000 width=8) Filter: (NOT (hashed SubPlan 1)) SubPlan 1 -> Index Scan using supplier_s_suppkey_idx_like on supplier (cost=0.00..8.45 rows=10 width=4) -> Hash (cost=54281.41..54281.41 rows=297597 width=40) -> Bitmap Heap Scan on part (cost=5741.91..54281.41 rows=297597 width=40) Recheck Cond: (p_size = ANY ('{43,41,39,36,29,5,50,48}'::integer[])) Filter: ((p_brand <> 'Brand#55'::bpchar) AND ((p_type)::text !~~ 'ECONOMY BURNISHED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5667.51 rows=320700 width=0) Index Cond: (p_size = ANY ('{43,41,39,36,29,5,50,48}'::integer[])) (17 rows) COMMIT; COMMIT