Sql 在JSON上查询配置单元时发生EOF异常

我是HIVE新手，需要一些帮助来查询从

JSON

文件创建的表

CREATE TABLE json_table( json string);
LOAD DATA INPATH  '/path/to/file.json' 
INTO TABLE json_table;

当我查询创建的json_table.json时，使用：

SELECT * FROM json_table;

这将返回：

{"id":243379853,"sampling_rate":null,"timestamp":"2017-08-06 20:05:02","location":{"id":1296,"latitude":"49.863","longitude":"8.651","country":"DE"},"sensor":{"id":2573,"pin":"7","sensor_type":{"id":9,"name":"DHT22","manufacturer":"various"}},"sensordatavalues":[{"id":559959584,"value":"19.00","value_type":"temperature"},{"id":559959585,"value":"86.00","value_type":"humidity"}]}

我想得到这样的结果

id        | timestampt |         | [...] | 
==========|======================|=======| 
243379853 | 2017-08-06 20:05:02  | [...] | 

带着疑问

SELECT
  GET_JSON_OBJECT(json_table.json,'$.id'),
  GET_JSON_OBJECT(json_table.json,'$.timestamp')
  GET_JSON_OBJECT(json_table.json,'$.sampling_rate')
  GET_JSON_OBJECT(json_table.json,'$.location.latitude')
  GET_JSON_OBJECT(json_table.json,'$.location.longitude')
FROM json_table;

但是我得到了以下配置单元

SQL异常

java.lang.Exception:org.apache.hive.service.cli.HiveSQLException:编译语句时出错：失败：ParseException行4:17在“（“GET_JSON_OBJECT”附近的”缺少EOF

---

您需要添加逗号：

SELECT
  GET_JSON_OBJECT(json_table.json,'$.id'),
  GET_JSON_OBJECT(json_table.json,'$.timestamp'),   --here
  GET_JSON_OBJECT(json_table.json,'$.sampling_rate'), --here
  GET_JSON_OBJECT(json_table.json,'$.location.latitude'), -- and here
  GET_JSON_OBJECT(json_table.json,'$.location.longitude')
FROM json_table;

我还将使用

expr AS alias

为列添加别名