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#55' and p_type not like 'MEDIUM PLATED%' and p_size in (23, 16, 34, 11, 48, 25, 43, 24) 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=456005.57..456074.97 rows=27761 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=446308.28..453956.70 rows=27761 width=40) -> Sort (cost=446308.28..447782.44 rows=589665 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=57935.61..389790.26 rows=589665 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=54225.75..54225.75 rows=296110 width=40) -> Bitmap Heap Scan on part (cost=5728.75..54225.75 rows=296110 width=40) Recheck Cond: (p_size = ANY ('{23,16,34,11,48,25,43,24}'::integer[])) Filter: ((p_brand <> 'Brand#55'::bpchar) AND ((p_type)::text !~~ 'MEDIUM PLATED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5654.73 rows=319000 width=0) Index Cond: (p_size = ANY ('{23,16,34,11,48,25,43,24}'::integer[])) (17 rows) COMMIT; COMMIT