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 BURNISHED%' and p_size in (26, 31, 28, 37, 14, 24, 46, 1) 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=456555.80..456625.38 rows=27831 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=446801.38..454501.26 rows=27831 width=40) -> Sort (cost=446801.38..448285.69 rows=593726 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=57969.46..389864.72 rows=593726 width=40) Hash Cond: (partsupp.ps_partkey = part.p_partkey) -> Seq Scan on partsupp (cost=8.48..270966.48 rows=4000000 width=8) Filter: (NOT (hashed SubPlan 1)) SubPlan 1 -> Index Scan using supplier_s_suppkey_idx_like on supplier (cost=0.00..8.45 rows=10 width=4) -> Hash (cost=54250.20..54250.20 rows=296863 width=40) -> Bitmap Heap Scan on part (cost=5734.52..54250.20 rows=296863 width=40) Recheck Cond: (p_size = ANY ('{26,31,28,37,14,24,46,1}'::integer[])) Filter: ((p_brand <> 'Brand#32'::bpchar) AND ((p_type)::text !~~ 'SMALL BURNISHED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5660.31 rows=319747 width=0) Index Cond: (p_size = ANY ('{26,31,28,37,14,24,46,1}'::integer[])) (17 rows) COMMIT; COMMIT