开始之前，让我们尝试在使用 CREATE TABLE 语句时将“when”设置为列名 -
mysql> create table DemoTable693( StudentId int NOT NULL AUTO_INCREMENT PRIMARY KEY, StudentName varchar(100), When datetime );
这将产生以下输出。将出现错误：
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'When datetime at line 5
您需要使用反引号将保留字括起来，例如“when”。让我们首先创建一个表并实现相同的：
mysql> create table DemoTable693 ( StudentId int NOT NULL AUTO_INCREMENT PRIMARY KEY, StudentName varchar(100), `When` datetime ); Query OK, 0 rows affected (0.63 sec)
使用插入命令在表中插入一些记录：
mysql> insert into DemoTable693(StudentName,`When`) values('Chris',NOW());
Query OK, 1 row affected (0.22 sec)
mysql> insert into DemoTable693(StudentName,`When`) values('Robert',CURDATE());
Query OK, 1 row affected (0.22 sec)使用 select 语句显示表中的所有记录 -
mysql> select *from DemoTable693;
这将产生以下输出 -
+-----------+-------------+---------------------+ | StudentId | StudentName | When | +-----------+-------------+---------------------+ | 1 | Chris | 2019-07-21 18:57:19 | | 2 | Robert | 2019-07-21 00:00:00 | +-----------+-------------+---------------------+ 2 rows in set (0.00 sec)
