单个json的,获取值使用json_extract
`select json_extract('{"name":"Zhaim","tel":"13240133388"}',"$.tel`");数组的json的,获取数组的长度使用JSON_LENGTH
SELECT id,JSON_LENGTH('[{"id":"10000004555096","name":"1.docx"},{"id":"10000004555098","name":"2.doc"},{"id":"10000004555097","name":"3.html"}]'),F_zwm,F_dhhm FROM `w_b01rzcllc` limit 10;数组的json的,获取数组的值使用json_extract
SELECT id,json_extract('[{"id":"10000004555096","name":"1.docx"},{"id":"10000004555098","name":"2.doc"},{"id":"10000004555097","name":"3.html"}]',"$[0].name"),F_zwm,F_dhhm FROM `w_b01rzcllc` limit 10;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;以上为个人经验,希望对您有所帮助。