1.基本数据类型：

  tinyint / smalint / int / bigint

  boolean

  float /double

  string

  timestamp

  binary

2.集合数据类型

struct "对象"

map "键-值" 

array "数组" 

create table employees(

     name string,

     salary float,

     subordinates array<string>,

    deductions map<string,float>,

    address   struct<street:string,city:string,state:string,zip:int>)

3.文本文件数据编码