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#54' and p_type not like 'LARGE POLISHED%' and p_size in (28, 47, 15, 45, 40, 12, 19, 30) 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=455505.09..455574.03 rows=27574 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=445861.04..453471.37 rows=27574 width=40) -> Sort (cost=445861.04..447327.96 rows=586767 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=57815.97..389641.64 rows=586767 width=40) Hash Cond: (partsupp.ps_partkey = part.p_partkey) -> Seq Scan on partsupp (cost=16.34..270974.34 rows=4000000 width=8) Filter: (NOT (hashed SubPlan 1)) SubPlan 1 -> Index Scan using supplier_s_suppkey_idx_like on supplier (cost=0.00..16.09 rows=100 width=4) -> Hash (cost=54123.16..54123.16 rows=294118 width=40) -> Bitmap Heap Scan on part (cost=5683.16..54123.16 rows=294118 width=40) Recheck Cond: (p_size = ANY ('{28,47,15,45,40,12,19,30}'::integer[])) Filter: ((p_brand <> 'Brand#54'::bpchar) AND ((p_type)::text !~~ 'LARGE POLISHED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5609.63 rows=316720 width=0) Index Cond: (p_size = ANY ('{28,47,15,45,40,12,19,30}'::integer[])) (17 rows) COMMIT; COMMIT