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#32' and p_type not like 'SMALL POLISHED%' and p_size in (16, 49, 3, 26, 6, 5, 18, 46) 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=416688.26..416757.93 rows=27869 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=406920.42..414630.64 rows=27869 width=40) Group Key: part.p_brand, part.p_type, part.p_size -> Sort (cost=406920.42..408406.73 rows=594522 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=57998.47..349901.69 rows=594522 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=54266.48..54266.48 rows=297261 width=40) -> Bitmap Heap Scan on part (cost=5739.30..54266.48 rows=297261 width=40) Recheck Cond: (p_size = ANY ('{16,49,3,26,6,5,18,46}'::integer[])) Filter: ((p_brand <> 'Brand#32'::bpchar) AND ((p_type)::text !~~ 'SMALL POLISHED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5664.99 rows=320207 width=0) Index Cond: (p_size = ANY ('{16,49,3,26,6,5,18,46}'::integer[])) Planning time: 2.924 ms (19 rows) COMMIT; COMMIT