mysql命令行修改字符编码

小灰灰 2021-09-25 16:34 334阅读 0赞

# 1 修改数据库字符编码 #

mysql> alter database mydb character set utf8 ;

# 2 创建数据库时，指定数据库的字符编码 #

mysql> create database mydb character set utf8 ;

# 3 查看mysql数据库的字符编码 #

mysql> show variables like ‘character%’; //查询当前mysql数据库的所有属性的字符编码

<table> 
 <thead> 
  <tr> 
   <th>Variable_name</th> 
   <th>Value</th> 
  </tr> 
 </thead> 
 <tbody> 
  <tr> 
   <td>character_set_client</td> 
   <td>latin1</td> 
  </tr> 
  <tr> 
   <td>character_set_connection</td> 
   <td>latin1</td> 
  </tr> 
  <tr> 
   <td>character_set_database</td> 
   <td>utf8</td> 
  </tr> 
  <tr> 
   <td>character_set_filesystem</td> 
   <td>binary</td> 
  </tr> 
  <tr> 
   <td>character_set_results</td> 
   <td>latin1</td> 
  </tr> 
  <tr> 
   <td>character_set_server</td> 
   <td>utf8</td> 
  </tr> 
  <tr> 
   <td>character_set_system</td> 
   <td>utf8</td> 
  </tr> 
  <tr> 
   <td>character_sets_dir</td> 
   <td>/usr/share/mysql/charsets/</td> 
  </tr> 
 </tbody> 
</table>

# 4 修改mysql数据库的字符编码 #

修改字符编码必须要修改mysql的配置文件my.cnf,然后重启才能生效

通常需要修改my.cnf的如下几个地方：

【client】下面，加上default-character-set=utf8，或者character\_set\_client=utf8

【mysqld】下面，加上character\_set\_server = utf8 ；

因为以上配置，mysql默认是latin1，如果仅仅是通过命令行客户端，mysql重启之后就不起作用了。

--------------------

如下是客户端命令行修改方式，不推荐使用

mysql> set character\_set\_client=utf8 ;

mysql> set character\_set\_connection=utf8 ;

mysql> set character\_set\_database=utf8 ;

mysql> set character\_set\_results=utf8 ;

mysql> set character\_set\_server=utf8 ;

mysql> set character\_set\_system=utf8 ;

mysql> show variables like ‘character%’;

<table> 
 <thead> 
  <tr> 
   <th>Variable_name</th> 
   <th>Value</th> 
  </tr> 
 </thead> 
 <tbody> 
  <tr> 
   <td>character_set_client</td> 
   <td>utf8</td> 
  </tr> 
  <tr> 
   <td>character_set_connection</td> 
   <td>utf8</td> 
  </tr> 
  <tr> 
   <td>character_set_database</td> 
   <td>utf8</td> 
  </tr> 
  <tr> 
   <td>character_set_filesystem</td> 
   <td>binary</td> 
  </tr> 
  <tr> 
   <td>character_set_results</td> 
   <td>utf8</td> 
  </tr> 
  <tr> 
   <td>character_set_server</td> 
   <td>utf8</td> 
  </tr> 
  <tr> 
   <td>character_set_system</td> 
   <td>utf8</td> 
  </tr> 
  <tr> 
   <td>character_sets_dir</td> 
   <td>/usr/share/mysql/charsets/</td> 
  </tr> 
 </tbody> 
</table>

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