使用MySQL，是否可以在一个单元格中添加一组元素？

要在单个单元格中添加一组元素，请使用JSON的概念。让我们首先创建一个表-

mysql> create table DemoTable1828
     (
     EmployeeId int,
     EmployeeRecords JSON
     );

使用插入命令在表中插入一些记录-

mysql> insert into DemoTable1828 values(1,'[{"EmployeeName":"Chris","EmployeeAge":29},{"EmployeeName":"David","EmployeeAge":27}]');
mysql> insert into DemoTable1828 values(2,'[{"EmployeeName":"John","EmployeeAge":36},{"EmployeeName":"Mike","EmployeeAge":32}]');

使用select语句显示表中的所有记录-

mysql> select * from DemoTable1828;

这将产生以下输出-

+------------+----------------------------------------------------------------------------------------------+
| EmployeeId | EmployeeRecords                                                                              |
+------------+----------------------------------------------------------------------------------------------+
|          1 | [{"EmployeeAge": 29, "EmployeeName": "Chris"}, {"EmployeeAge": 27, "EmployeeName": "David"}] |
|          2 | [{"EmployeeAge": 36, "EmployeeName": "John"}, {"EmployeeAge": 32, "EmployeeName": "Mike"}]   |
+------------+----------------------------------------------------------------------------------------------+
2 rows in set (0.00 sec)