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#12' and p_type not like 'MEDIUM BURNISHED%' and p_size in (50, 44, 30, 29, 22, 40, 34, 26) 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=416326.06..416395.45 rows=27756 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=406598.54..414277.60 rows=27756 width=40) Group Key: part.p_brand, part.p_type, part.p_size -> Sort (cost=406598.54..408078.84 rows=592120 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=57948.26..349827.46 rows=592120 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=54231.29..54231.29 rows=296060 width=40) -> Bitmap Heap Scan on part (cost=5730.96..54231.29 rows=296060 width=40) Recheck Cond: (p_size = ANY ('{50,44,30,29,22,40,34,26}'::integer[])) Filter: ((p_brand <> 'Brand#12'::bpchar) AND ((p_type)::text !~~ 'MEDIUM BURNISHED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5656.95 rows=319133 width=0) Index Cond: (p_size = ANY ('{50,44,30,29,22,40,34,26}'::integer[])) Planning time: 2.857 ms (19 rows) COMMIT; COMMIT