我有一個json列day_data
它有json格式的數據。如何使用Hive實現預期的輸出?配置單元中的嵌套json
輸入:
{"_id":"1","name":"abc","attribs":[{"minutes":0,"name":"sedentary"},{"minutes":0,"name":"lightly"},{"minutes":0,"name":"fairly"},{"minutes":28,"name":"very"}],"validated":true}
輸出: id name attrib_minutes attrib_name validated 1 abc 0 sedentary true 1 abc 0 lightly true 1 abc 0 fairly true 1 abc 28 very true
我能夠提取的ID,名稱和驗證領域使用get_json_object
命令, select get_json_object(day_data,'$._id') as id, get_json_object(day_data,'$.name') as name, get_json_object(day_data,'$.validated') as validated from temp_table;
我如何提取嵌套json屬性(attrib_minutes和attrib_name)?