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 'ECONOMY ANODIZED%' and p_size in (27, 6, 7, 42, 21, 28, 36, 49) 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=417411.35..417481.69 rows=28135 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=407565.73..415332.16 rows=28135 width=40) Group Key: part.p_brand, part.p_type, part.p_size -> Sort (cost=407565.73..409062.74 rows=598807 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=58158.94..350105.01 rows=598807 width=40) Hash Cond: (partsupp.ps_partkey = part.p_partkey) -> Seq Scan on partsupp (cost=16.23..270974.23 rows=4000000 width=8) Filter: (NOT (hashed SubPlan 1)) SubPlan 1 -> Index Scan using supplier_s_suppkey_idx_like on supplier (cost=0.14..15.98 rows=100 width=4) -> Hash (cost=54391.39..54391.39 rows=300106 width=40) -> Bitmap Heap Scan on part (cost=5790.21..54391.39 rows=300106 width=40) Recheck Cond: (p_size = ANY ('{27,6,7,42,21,28,36,49}'::integer[])) Filter: ((p_brand <> 'Brand#13'::bpchar) AND ((p_type)::text !~~ 'ECONOMY ANODIZED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5715.19 rows=323167 width=0) Index Cond: (p_size = ANY ('{27,6,7,42,21,28,36,49}'::integer[])) Planning time: 5.439 ms (19 rows) COMMIT; COMMIT