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#13' and p_type not like 'SMALL PLATED%' and p_size in (25, 8, 50, 15, 7, 23, 12, 13) 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=454886.16..454954.91 rows=27499 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=445306.87..452858.51 rows=27499 width=40) -> Sort (cost=445306.87..446762.20 rows=582132 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=57785.54..389564.86 rows=582132 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=54102.78..54102.78 rows=293314 width=40) -> Bitmap Heap Scan on part (cost=5678.28..54102.78 rows=293314 width=40) Recheck Cond: (p_size = ANY ('{25,8,50,15,7,23,12,13}'::integer[])) Filter: ((p_brand <> 'Brand#13'::bpchar) AND ((p_type)::text !~~ 'SMALL PLATED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5604.95 rows=316100 width=0) Index Cond: (p_size = ANY ('{25,8,50,15,7,23,12,13}'::integer[])) (17 rows) COMMIT; COMMIT