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 'LARGE BURNISHED%' and p_size in (18, 14, 2, 21, 1, 26, 27, 44) 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=414937.44..415006.53 rows=27634 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=405348.76..412898.86 rows=27634 width=40) Group Key: part.p_brand, part.p_type, part.p_size -> Sort (cost=405348.76..406803.51 rows=581901 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=57853.52..349630.53 rows=581901 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=54152.88..54152.88 rows=294753 width=40) -> Bitmap Heap Scan on part (cost=5691.06..54152.88 rows=294753 width=40) Recheck Cond: (p_size = ANY ('{18,14,2,21,1,26,27,44}'::integer[])) Filter: ((p_brand <> 'Brand#51'::bpchar) AND ((p_type)::text !~~ 'LARGE BURNISHED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5617.37 rows=317593 width=0) Index Cond: (p_size = ANY ('{18,14,2,21,1,26,27,44}'::integer[])) Planning time: 3.065 ms (19 rows) COMMIT; COMMIT