在 oracle 中更新 JSON 键的值

Question

我正在使用 Oracle SQL Developer 并且想要更新 JSON 中特定键的值。

我正在使用以下查询：

   update M  
  set  OBJECT = json_mergepatch (   
     OBJECT, '{ "$.ABC.DATA.WORKFLOW_STATUS.ABC" : "MONIKA" }' 
   ) WHERE KEY_1 = '121';

输出：错误报告

SQL 错误：ORA-00904：“JSON_MERGEPATCH”：标识符无效 00904. 00000 - "%s: 无效标识符"

请建议我正确的查询。

Answer 1

假设您尝试更新的 JSON 的结构类似于：

CREATE TABLE test_data
AS
    SELECT '121' AS key_1, '{
    "ABC": {
        "WORKFLOW_STATUS": {
            "ABC": "some value",
            "XYZ": 5.23
        },
        "OTHER": "fancy text"
    },
    "DEF": 123
}' AS object_val FROM DUAL
    UNION ALL
    SELECT '122' AS key_1, '{
    "ABC": {
        "WORKFLOW_STATUS": {
            "ABC": "other value",
            "XYZ": 2
        },
        "OTHER": "cool text"
    },
    "DEF": 999
}' AS object_val FROM DUAL;

更新 JSON 路径 $.ABC.DATA.WORKFLOW_STATUS.ABC 的正确语法是这样的：

UPDATE test_data
   SET object_val = json_mergepatch (object_val, '{"ABC":{"WORKFLOW_STATUS":{"ABC":"MONIKA"}}}')
 WHERE key_1 = '121';