Presto sql 语句

• cast() 函数的使用 将某种数据类型显式转换成另一种数据类型

• cast('12' as integer)

  select 
  cast((year(current_date)-year(birth)) as integer) as age, 
  sum(price) as totalPrice 
  from record r 
  join user_dimension u on r.uid = u.uid 
  group by cast((year(current_date)-year(birth)) as integer) 
  order by totalPrice desc;