MySQL 获取 json 字段中指定的值 ( MySQL 5.7 上下两种方式 )

JSON: 

{
    "success": true,
    "code": 0,
    "msg": "操作成功",
    "data": {
        "access_token": "333d8c09-e522-4585-8cca-1d9c66e5cece",
        "token_type": "bearer",
        "refresh_token": "48a3e598-0e3e-4739-9e57-b301c1e3529d",
        "expires_in": 3599,
        "scope": "app"
    }
}

MySQL 5.7 以上可直接使用函数 JSON_EXTRACT 获取

select replace(json_extract(remark, '$.data.budgetNum'), '"', '')
from sys_user;

结果:

 

---

MySQL 5.7 以下可利用分割函数进行获取

select REPLACE(
                       remark,
                       CONCAT(
                               SUBSTRING_INDEX(remark, '"access_token":', 1),
                               '"access_token":"'
                           ),
                       ''
                   ) from sys_user;