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#31' and p_type not like 'ECONOMY POLISHED%' and p_size in (12, 22, 44, 1, 24, 40, 5, 36) 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=416264.36..416334.42 rows=28023 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=406537.76..414194.26 rows=28023 width=40) Group Key: part.p_brand, part.p_type, part.p_size -> Sort (cost=406537.76..408013.01 rows=590102 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=58115.67..349974.69 rows=590102 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=54363.11..54363.11 rows=298907 width=40) -> Bitmap Heap Scan on part (cost=5783.43..54363.11 rows=298907 width=40) Recheck Cond: (p_size = ANY ('{12,22,44,1,24,40,5,36}'::integer[])) Filter: ((p_brand <> 'Brand#31'::bpchar) AND ((p_type)::text !~~ 'ECONOMY POLISHED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5708.71 rows=322307 width=0) Index Cond: (p_size = ANY ('{12,22,44,1,24,40,5,36}'::integer[])) Planning time: 2.960 ms (19 rows) COMMIT; COMMIT