如何将键值对加载到配置单元表中

如何将键值对加载到配置单元表中

本文介绍了如何将键值对加载到配置单元表中?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

以下是我的数据集:

  Jun name =balajiid = 101 

Mar name =kumarid = 102

创建表格:

  create table示例(月份字符串,名称字符串,id int)
以'space'结尾的行格式分隔字段由'='终止的地图键;

结果:

  select * from sample; 
JUN name =balajiNULL
Mar name =kumarNULL

预期结果:

  JUN balaji 101 

Mar kumar 102

请帮我解决这个问题。

解决方案

  create table sample(mnth string,names map< string,string>,ids map< string ,int>)
由格式分隔的字段以''结尾的映射键终止';';

选择查询应该是:

 从sample中选择mnth,names [name],id [id]; 

结果:
Junbalaji101
Markumar102

如果您从示例中触发选择*

  Jun {name:\balaji \} {id:101} 
Mar {name:\kumar \} {id: 102}

要访问map中的每个值,您需要像 name]


Below is my data set:

Jun name="balaji" id=101

Mar name="kumar" id=102

Created table:

create table sample(month string,name string, id int)
row format delimited fields terminated by 'space' map keys terminated by '=';

Result:

select * from sample;
JUN name="balaji" NULL
Mar name="kumar" NULL

Expected result:

JUN balaji 101

Mar kumar 102

Please help me on this.

解决方案

Create tables like this:

create table sample(mnth string,names map<string,string>,ids map<string,int>)
row format delimited fields terminated by ' ' map keys terminated by '=';

Select query should be:

  select mnth,names["name"],ids["id"]  from sample;

    result:
      Jun   "balaji"    101
      Mar   "kumar" 102

If you fire select * from sample:

   Jun  {"name":"\"balaji\""}   {"id":101}
   Mar  {"name":"\"kumar\""}    {"id":102}

For accessing each value in map you need to pass like names["name"].

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09-11 09:30