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)