json - 将 JSON 数据从一个表插入到 HIVE 中的另一个表

Question

我想根据数据上的关键字段将JSON数据从一个表插入到其他表。

我的数据是这样的

{"Rtype":{"ver":"1","os":"ms","type":"ns","vehicle":"Mh-3412","MOD":{"Version":[{"ABC":{"XYZ":"123.dfer","founder":"3.0","GHT":"Florida","fashion":"fg45","cdc":"new","dof":"yes","ts":"2000-04-01T00:00:00.171Z"}}]}}}

{"Rtype":{"ver":"1","os":"ms","type":"ns","vehicle":"Mh-3412","MOD":{"Version":[{"GAP":{"XVY":"123.dfer","FAH":"3.0","GHT":"Florida","fashion":"fg45","cdc":"new","dof":"yes","ts":"2000-04-01T00:00:00.171Z"}}]}}}

{"Rtype":{"ver":"1","os":"ms","type":"ns","vehicle":"Mh-3412","MOD":{"Version":[{"BOX":{"VOG":"123.dfer","FAH":"3.0","FAX":"Florida","fashion":"fg45","cdc":"new","dof":"yes","ts":"2000-04-01T00:00:00.171Z"}}]}}}

这里基于版本，无论是“BOX”还是“GAP”还是“ABC”，我想将特定 JSON 行上的字段填充到另一个表

例如:如果版本是“GAP”，则填充一个表中的特定行，如果它是“BOX”，则填充到另一个表中……我的意思是 BOX 的所有行……

如何使用 HIVE 实现此目的。请帮忙。

注意:我的 JSON 数据在一个表中作为字符串类型的列

Answer 1

演示

create table src (myjson string);

insert into src values
    ('{"Rtype":{"ver":"1","os":"ms","type":"ns","vehicle":"Mh-3412","MOD":{"Version":[{"ABC":{"XYZ":"123.dfer","founder":"3.0","GHT":"Florida","fashion":"fg45","cdc":"new","dof":"yes","ts":"2000-04-01T00:00:00.171Z"}}]}}}')
   ,('{"Rtype":{"ver":"1","os":"ms","type":"ns","vehicle":"Mh-3412","MOD":{"Version":[{"GAP":{"XVY":"123.dfer","FAH":"3.0","GHT":"Florida","fashion":"fg45","cdc":"new","dof":"yes","ts":"2000-04-01T00:00:00.171Z"}}]}}}')
   ,('{"Rtype":{"ver":"1","os":"ms","type":"ns","vehicle":"Mh-3412","MOD":{"Version":[{"BOX":{"VOG":"123.dfer","FAH":"3.0","FAX":"Florida","fashion":"fg45","cdc":"new","dof":"yes","ts":"2000-04-01T00:00:00.171Z"}}]}}}')
;

create table trg_abc (myjson string);
create table trg_gap (myjson string);
create table trg_box (myjson string);

---

from src
insert into trg_abc select myjson where get_json_object(myjson,'$.Rtype.MOD.Version[0].ABC') is not null
insert into trg_gap select myjson where get_json_object(myjson,'$.Rtype.MOD.Version[0].GAP') is not null
insert into trg_box select myjson where get_json_object(myjson,'$.Rtype.MOD.Version[0].BOX') is not null
;