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#12' and p_type not like 'SMALL PLATED%' and p_size in (8, 30, 22, 37, 12, 4, 26, 15) 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=417151.42..417221.43 rows=28002 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=407336.05..415083.02 rows=28002 width=40) Group Key: part.p_brand, part.p_type, part.p_size -> Sort (cost=407336.05..408829.44 rows=597356 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=58093.46..350025.02 rows=597356 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=54343.76..54343.76 rows=298678 width=40) -> Bitmap Heap Scan on part (cost=5778.94..54343.76 rows=298678 width=40) Recheck Cond: (p_size = ANY ('{8,30,22,37,12,4,26,15}'::integer[])) Filter: ((p_brand <> 'Brand#12'::bpchar) AND ((p_type)::text !~~ 'SMALL PLATED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5704.27 rows=321713 width=0) Index Cond: (p_size = ANY ('{8,30,22,37,12,4,26,15}'::integer[])) Planning time: 5.507 ms (19 rows) COMMIT; COMMIT