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 'PROMO ANODIZED%' and p_size in (37, 18, 10, 31, 11, 8, 17, 2) 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=415580.78..415649.75 rows=27591 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=405929.39..413545.68 rows=27591 width=40) Group Key: part.p_brand, part.p_type, part.p_size -> Sort (cost=405929.39..407397.47 rows=587230 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=57831.99..349662.29 rows=587230 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=54136.96..54136.96 rows=294304 width=40) -> Bitmap Heap Scan on part (cost=5687.28..54136.96 rows=294304 width=40) Recheck Cond: (p_size = ANY ('{37,18,10,31,11,8,17,2}'::integer[])) Filter: ((p_brand <> 'Brand#13'::bpchar) AND ((p_type)::text !~~ 'PROMO ANODIZED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5613.71 rows=317107 width=0) Index Cond: (p_size = ANY ('{37,18,10,31,11,8,17,2}'::integer[])) Planning time: 2.775 ms (19 rows) COMMIT; COMMIT