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 (39, 31, 22, 25, 14, 27, 37, 29) 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=456532.92..456602.77 rows=27940 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=446781.13..454469.55 rows=27940 width=40) -> Sort (cost=446781.13..448262.94 rows=592721 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=58062.89..389948.10 rows=592721 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=54329.19..54329.19 rows=298018 width=40) -> Bitmap Heap Scan on part (cost=5774.51..54329.19 rows=298018 width=40) Recheck Cond: (p_size = ANY ('{39,31,22,25,14,27,37,29}'::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..5700.01 rows=321307 width=0) Index Cond: (p_size = ANY ('{39,31,22,25,14,27,37,29}'::integer[])) (17 rows) COMMIT; COMMIT