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#33' and p_type not like 'ECONOMY ANODIZED%' and p_size in (6, 20, 37, 4, 31, 7, 35, 18) 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=456174.74..456244.02 rows=27710 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=446463.65..454130.00 rows=27710 width=40) -> Sort (cost=446463.65..447941.50 rows=591140 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=57924.20..389793.60 rows=591140 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=54221.10..54221.10 rows=295570 width=40) -> Bitmap Heap Scan on part (cost=5727.60..54221.10 rows=295570 width=40) Recheck Cond: (p_size = ANY ('{6,20,37,4,31,7,35,18}'::integer[])) Filter: ((p_brand <> 'Brand#33'::bpchar) AND ((p_type)::text !~~ 'ECONOMY ANODIZED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5653.71 rows=318860 width=0) Index Cond: (p_size = ANY ('{6,20,37,4,31,7,35,18}'::integer[])) (17 rows) COMMIT; COMMIT