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#51' and p_type not like 'MEDIUM ANODIZED%' and p_size in (37, 46, 22, 3, 39, 34, 31, 50) 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=416207.17..416276.48 rows=27722 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=406491.97..414161.46 rows=27722 width=40) Group Key: part.p_brand, part.p_type, part.p_size -> Sort (cost=406491.97..407970.42 rows=591382 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=57925.15..349796.97 rows=591382 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=54212.79..54212.79 rows=295691 width=40) -> Bitmap Heap Scan on part (cost=5726.61..54212.79 rows=295691 width=40) Recheck Cond: (p_size = ANY ('{37,46,22,3,39,34,31,50}'::integer[])) Filter: ((p_brand <> 'Brand#51'::bpchar) AND ((p_type)::text !~~ 'MEDIUM ANODIZED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5652.69 rows=318567 width=0) Index Cond: (p_size = ANY ('{37,46,22,3,39,34,31,50}'::integer[])) Planning time: 4.860 ms (19 rows) COMMIT; COMMIT