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#42' and p_type not like 'SMALL POLISHED%' and p_size in (3, 48, 4, 23, 34, 14, 12, 6) 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=456573.62..456643.21 rows=27836 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=446817.47..454518.68 rows=27836 width=40) -> Sort (cost=446817.47..448302.04 rows=593828 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=57974.01..389870.29 rows=593828 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=54254.11..54254.11 rows=296914 width=40) -> Bitmap Heap Scan on part (cost=5735.44..54254.11 rows=296914 width=40) Recheck Cond: (p_size = ANY ('{3,48,4,23,34,14,12,6}'::integer[])) Filter: ((p_brand <> 'Brand#42'::bpchar) AND ((p_type)::text !~~ 'SMALL POLISHED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5661.21 rows=319867 width=0) Index Cond: (p_size = ANY ('{3,48,4,23,34,14,12,6}'::integer[])) (17 rows) COMMIT; COMMIT