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#21' and p_type not like 'LARGE POLISHED%' and p_size in (31, 41, 15, 2, 46, 3, 5, 7) 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=455433.31..455502.67 rows=27746 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=445794.39..453385.65 rows=27746 width=40) -> Sort (cost=445794.39..447257.15 rows=585104 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=57937.27..389746.31 rows=585104 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=54221.58..54221.58 rows=295948 width=40) -> Bitmap Heap Scan on part (cost=5727.75..54221.58 rows=295948 width=40) Recheck Cond: (p_size = ANY ('{31,41,15,2,46,3,5,7}'::integer[])) Filter: ((p_brand <> 'Brand#21'::bpchar) AND ((p_type)::text !~~ 'LARGE POLISHED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5653.77 rows=318873 width=0) Index Cond: (p_size = ANY ('{31,41,15,2,46,3,5,7}'::integer[])) (17 rows) COMMIT; COMMIT