hive get_json_object udf

+-------------------------------------------------------------------+
                                json
 +-------------------------------------------------------------------+
 {"store":
   {"fruit":[{"weight":8,"type":"apple"},{"weight":9,"type":"pear"}],
    "bicycle":{"price":19.95,"color":"red"}
   },
  "email":"amy@only_for_json_udf_test.net",
  "owner":"amy"
 }
 +-------------------------------------------------------------------+
 json内容可以用以下查询语句解析
 hive> SELECT get_json_object(src_json.json, '$.owner') FROM src_json;
 amy
 hive> SELECT get_json_object(src_json.json, '$.store.fruit[0]') FROM src_json;
 {"weight":8,"type":"apple"}
 hive> SELECT get_json_object(src_json.json, '$.non_exist_key') FROM src_json;
 NULL 

郑重声明:本站内容如果来自互联网及其他传播媒体,其版权均属原媒体及文章作者所有。转载目的在于传递更多信息及用于网络分享,并不代表本站赞同其观点和对其真实性负责,也不构成任何其他建议。