如何在plsql中解析JSON？

Question

我正在尝试在Oracle PLSQL中解析JSON。

CREATE OR REPLACE PROCEDURE procedure1 AS
     dato   VARCHAR2(10000);
     je     json_element_t;
     jo     json_object_t;

BEGIN
  dato := '{"NOM03_BOKIDN":"CGM50","NOM03_BOKIDN":"CGM50",
            "NOM03_BOKIDN":"SPV55","NOM03_BOKIDN":"CGM40"}';
  je := json_element_t.parse(dato);
  dbms_output.put_line(je.to_string);
END procedure1;

结果是

{"NOM03_BOKIDN":"CGM40"}