如何在MySQL中创建NVARCHAR列？
MySQL转换NVARCHAR()为VARCHAR()。NVARCHAR在MySQL中代表NationalVarchar。让我们首先创建一个表，其中“StudentName”列之一为NVARCHAR-
mysql> create table DemoTable ( StudentName NVARCHAR(40), StudentCountryName VARCHAR(50) );
让我们检查表的描述-
mysql> desc DemoTable;
这将产生以下输出。如下所示，在MySQL中，具有NVARCHAR类型的StudentName列会自动转换为VARCHAR-
+--------------------+-------------+------+-----+---------+-------+ | Field | Type | Null | Key | Default | Extra | +--------------------+-------------+------+-----+---------+-------+ | StudentName | varchar(40) | YES | | NULL | | | StudentCountryName | varchar(50) | YES | | NULL | | +--------------------+-------------+------+-----+---------+-------+ 2 rows in set (0.00 sec)
使用插入命令在表中插入一些记录-
mysql> insert into DemoTable values('Chris','US');
mysql> insert into DemoTable values('Tom','UK');
mysql> insert into DemoTable values('David','AUS');使用select语句显示表中的所有记录-
mysql> select *from DemoTable;
这将产生以下输出-
+-------------+--------------------+ | StudentName | StudentCountryName | +-------------+--------------------+ | Chris | US | | Tom | UK | | David | AUS | +-------------+--------------------+ 3 rows in set (0.00 sec)