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#24' and p_type not like 'STANDARD BURNISHED%' and p_size in (8, 32, 14, 18, 16, 26, 3, 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=456412.45..456481.92 rows=27785 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=446674.64..454361.64 rows=27785 width=40) -> Sort (cost=446674.64..448156.47 rows=592732 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=57955.15..389840.47 rows=592732 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=54242.10..54242.10 rows=296366 width=40) -> Bitmap Heap Scan on part (cost=5732.60..54242.10 rows=296366 width=40) Recheck Cond: (p_size = ANY ('{8,32,14,18,16,26,3,38}'::integer[])) Filter: ((p_brand <> 'Brand#24'::bpchar) AND ((p_type)::text !~~ 'STANDARD BURNISHED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5658.51 rows=319500 width=0) Index Cond: (p_size = ANY ('{8,32,14,18,16,26,3,38}'::integer[])) (17 rows) COMMIT; COMMIT