构建表

 create table json_user (
 uid int auto_increment,
 data json,
 primary key(uid)
 );

插入数据

insert into json_user values (

null, '{

   "name":"lison",

"age":18,

"address":"enjoy"

   }' );
 insert into json_user values (
 null,
 '{

  "name":"james",

  "age":28,

  "mail":"james@163.com"

 }');

查询数据

①查询所有select*

select * from json_user;

②利用json_extract查询json数据

select json_extract(data,'$') as json_data from json_user;

select json_extract(data,'$.age') as age from json_user;