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#51' and p_type not like 'MEDIUM BURNISHED%' and p_size in (48, 13, 17, 36, 22, 46, 49, 19) 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=416430.52..416499.99 rows=27790 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=406690.75..414379.30 rows=27790 width=40) Group Key: part.p_brand, part.p_type, part.p_size -> Sort (cost=406690.75..408172.88 rows=592852 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=57957.69..349844.21 rows=592852 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=54236.13..54236.13 rows=296426 width=40) -> Bitmap Heap Scan on part (cost=5732.13..54236.13 rows=296426 width=40) Recheck Cond: (p_size = ANY ('{48,13,17,36,22,46,49,19}'::integer[])) Filter: ((p_brand <> 'Brand#51'::bpchar) AND ((p_type)::text !~~ 'MEDIUM BURNISHED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5658.03 rows=319280 width=0) Index Cond: (p_size = ANY ('{48,13,17,36,22,46,49,19}'::integer[])) Planning time: 3.758 ms (19 rows) COMMIT; COMMIT