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#52' and p_type not like 'STANDARD BURNISHED%' and p_size in (39, 7, 33, 30, 46, 42, 2, 24) 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=416901.78..416971.60 rows=27926 width=40) Sort Key: (count(DISTINCT partsupp.ps_suppkey)), part.p_brand, part.p_type, part.p_size -> GroupAggregate (cost=407113.48..414839.54 rows=27926 width=40) Group Key: part.p_brand, part.p_type, part.p_size -> Sort (cost=407113.48..408602.84 rows=595744 width=40) Sort Key: part.p_brand, part.p_type, part.p_size -> Hash Join (cost=58053.29..349968.73 rows=595744 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=54313.66..54313.66 rows=297872 width=40) -> Bitmap Heap Scan on part (cost=5771.84..54313.66 rows=297872 width=40) Recheck Cond: (p_size = ANY ('{39,7,33,30,46,42,2,24}'::integer[])) Filter: ((p_brand <> 'Brand#52'::bpchar) AND ((p_type)::text !~~ 'STANDARD BURNISHED%'::text)) -> Bitmap Index Scan on part_p_size_idx (cost=0.00..5697.37 rows=320793 width=0) Index Cond: (p_size = ANY ('{39,7,33,30,46,42,2,24}'::integer[])) Planning time: 3.130 ms (19 rows) COMMIT; COMMIT