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#44' and p_type not like 'PROMO BRUSHED%' and p_size in (24, 37, 35, 15, 46, 36, 42, 4) 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=456263.34..456332.69 rows=27740 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=446541.44..454216.17 rows=27740 width=40) -> Sort (cost=446541.44..448020.91 rows=591786 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=57928.94..389804.80 rows=591786 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=54221.80..54221.80 rows=295893 width=40) -> Bitmap Heap Scan on part (cost=5727.80..54221.80 rows=295893 width=40) Recheck Cond: (p_size = ANY ('{24,37,35,15,46,36,42,4}'::integer[])) Filter: ((p_brand <> 'Brand#44'::bpchar) AND ((p_type)::text !~~ 'PROMO BRUSHED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5653.83 rows=318880 width=0) Index Cond: (p_size = ANY ('{24,37,35,15,46,36,42,4}'::integer[])) (17 rows) COMMIT; COMMIT