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#25' and p_type not like 'ECONOMY BURNISHED%' and p_size in (35, 19, 18, 25, 40, 26, 42, 34) 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=456643.58..456713.24 rows=27862 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=446880.22..454586.53 rows=27862 width=40) -> Sort (cost=446880.22..448365.76 rows=594215 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=57993.00..389893.15 rows=594215 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=54269.61..54269.61 rows=297193 width=40) -> Bitmap Heap Scan on part (cost=5739.11..54269.61 rows=297193 width=40) Recheck Cond: (p_size = ANY ('{35,19,18,25,40,26,42,34}'::integer[])) Filter: ((p_brand <> 'Brand#25'::bpchar) AND ((p_type)::text !~~ 'ECONOMY BURNISHED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5664.81 rows=320340 width=0) Index Cond: (p_size = ANY ('{35,19,18,25,40,26,42,34}'::integer[])) (17 rows) COMMIT; COMMIT