Presto 输出嵌套 STRUCT 类型数据

• SQL

SELECT 
 CAST(
      ROW(
          100,
          500,
          ROW(40.5, 60)
      ) AS 
      ROW(
          departmentNumber bigint,
          itemNumber bigint,
          shelfCapacity ROW(qty double, precision bigint)
     )
)    

• 参考：https://stackoverflow.com/questions/62132110