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set hivevar:msg={"id":"bb6d4d64875eef81","time":"2019-03-19 12:12:12"};
select get_json_object('${hivevar:msg}','$.id') -- bb6d4d64875eef81
set hivevar:msg={
"id": "bb6d4d64875eef81",
"time": "2019-03-19 12:12:12"
};
select get_json_object('${hivevar:msg}','$.id') -- bb6d4d64875eef81
set msg={
"id": "bb6d4d64875eef81",
"time": "2019-03-19 12:12:12"
};
select get_json_object('${msg}','$.id') -- NULL
select map('id','bb6d4d64875eef81','time','2019-03-19 12:12:12') -- {"id":"bb6d4d64875eef81","time":"2019-03-19 12:12:12"}
end