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我是HIVE新手,需要一些幫助來查詢我從JSON
文件創建的表格。EOF異常查詢JSON上的Hive
CREATE TABLE json_table(json string);
LOAD DATA INPATH '/path/to/file.json'
INTO TABLE json_table;
當我查詢創建json_table.json有:
SELECT * FROM json_table;
這將返回:
{"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"}]}
我試圖得到像
id | timestampt | | [...] |
==========|======================|=======|
243379853 | 2017-08-06 20:05:02 | [...] |
結果與查詢
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;
,但我得到以下蜂巢SQL Exception
java.lang.Exception的:org.apache.hive.service.cli.HiveSQLException:錯誤在編譯聲明:失敗:ParseException的線4:17失蹤EOF在 '(' 近 'GET_JSON_OBJECT'