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#22' and p_type not like 'MEDIUM BURNISHED%' and p_size in (8, 22, 31, 41, 1, 6, 5, 34) 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=456405.48..456475.23 rows=27898 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=446664.41..454345.51 rows=27898 width=40) -> Sort (cost=446664.41..448144.83 rows=592170 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=58008.48..389888.18 rows=592170 width=40) Hash Cond: (partsupp.ps_partkey = part.p_partkey) -> Seq Scan on partsupp (cost=8.48..270966.48 rows=4000000 width=8) Filter: (NOT (hashed SubPlan 1)) SubPlan 1 -> Index Scan using supplier_s_suppkey_idx_like on supplier (cost=0.00..8.45 rows=10 width=4) -> Hash (cost=54280.28..54280.28 rows=297578 width=40) -> Bitmap Heap Scan on part (cost=5741.60..54280.28 rows=297578 width=40) Recheck Cond: (p_size = ANY ('{8,22,31,41,1,6,5,34}'::integer[])) Filter: ((p_brand <> 'Brand#22'::bpchar) AND ((p_type)::text !~~ 'MEDIUM BURNISHED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5667.21 rows=320667 width=0) Index Cond: (p_size = ANY ('{8,22,31,41,1,6,5,34}'::integer[])) (17 rows) COMMIT; COMMIT