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#43' and p_type not like 'LARGE PLATED%' and p_size in (23, 24, 10, 48, 15, 17, 19, 38) 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=457221.31..457291.37 rows=28025 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=447397.64..455151.04 rows=28025 width=40) -> Sort (cost=447397.64..448892.27 rows=597852 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=58098.93..390035.45 rows=597852 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=54353.88..54353.88 rows=298926 width=40) -> Bitmap Heap Scan on part (cost=5780.38..54353.88 rows=298926 width=40) Recheck Cond: (p_size = ANY ('{23,24,10,48,15,17,19,38}'::integer[])) Filter: ((p_brand <> 'Brand#43'::bpchar) AND ((p_type)::text !~~ 'LARGE PLATED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5705.65 rows=322060 width=0) Index Cond: (p_size = ANY ('{23,24,10,48,15,17,19,38}'::integer[])) (17 rows) COMMIT; COMMIT