-- database: presto; groups: tpch; tables: lineitem,part
SELECT sum(l_extendedprice) / 7.0 AS avg_yearly
FROM lineitem,
     part
WHERE p_partkey = l_partkey
  AND p_brand = 'Brand#23'
  AND p_container = 'MED BOX'
  AND l_quantity < (SELECT 0.2 * avg(l_quantity)
                    FROM lineitem
                    WHERE l_partkey = p_partkey)
