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 'STANDARD BRUSHED%' and p_size in (6, 36, 48, 37, 15, 26, 4, 34) 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=415671.80..415740.71 rows=27567 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=406011.94..413638.64 rows=27567 width=40) Group Key: part.p_brand, part.p_type, part.p_size -> Sort (cost=406011.94..407482.15 rows=588082 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=57818.23..349657.05 rows=588082 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=54126.49..54126.49 rows=294041 width=40) -> Bitmap Heap Scan on part (cost=5684.82..54126.49 rows=294041 width=40) Recheck Cond: (p_size = ANY ('{6,36,48,37,15,26,4,34}'::integer[])) Filter: ((p_brand <> 'Brand#32'::bpchar) AND ((p_type)::text !~~ 'STANDARD BRUSHED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5611.31 rows=316787 width=0) Index Cond: (p_size = ANY ('{6,36,48,37,15,26,4,34}'::integer[])) Planning time: 2.806 ms (19 rows) COMMIT; COMMIT