json_table使用

• 方式一

SELECT 
FR.*
FROM dual ,
JSON_TABLE('[{"name":"hziwei", "age": 13},{"name":"hziwei", "age": 15}]','$[*]'
COLUMNS ( name VARCHAR2(10) PATH '$.name',
                     age VARCHAR2(10) PATH '$.age'
)) AS FR where age > 13;

• 方式二

SELECT 
FR.*
FROM dual ,
JSON_TABLE('{"data": [{"name":"hziwei", "age": 13},{"name":"hziwei", "age": 15}]}','$.data[*]'
COLUMNS (name VARCHAR2(10) PATH '$.name',
                     age NUMBER PATH '$.age'
)) AS FR         
;

• 从表中的json数组字段转换为表

表结构 表名:TEST

SELECT 
FR.*
FROM TEST,
JSON_TABLE(CONTENT,'$[*]'
COLUMNS ( name VARCHAR2(10) PATH '$.name',
           age NUMBER PATH '$.age'
)) AS FR         
;