MySQL设置UTF8字符

linux修改/etc/my.cnf

win系统修改my.ini文件

注意: 5.1版本在mysqld下设置default-character-set=utf8, 5.5的设置变了, 我使用的环境是mysql 5.5

[client] default - character - set =utf8   [mysqld] character - set -server=utf8 init_connect= 'SET NAMES utf8'     [mysql] default - character - set =utf8

 修改完成以后, 重启数据库, 能够查看

mysql> \s -------------- mysql  Ver 14.14 Distrib 5.5.27, for  Win32 (x86)   Connection  id:          33 Current  database : Current  user :           root@localhost SSL:                    Not  in  use Using delimiter:        ; Server version:         5.5.27 MySQL Community Server (GPL) Protocol version:       10 Connection :             localhost via TCP/IP Server characterset:    utf8 Db     characterset:    utf8 Client characterset:    utf8 Conn.  characterset:    utf8 TCP port:               3306 Uptime:                 3 min  53 sec   Threads: 1  Questions: 282  Slow queries: 0  Opens: 61  Flush tables: 1  Open  tables: 54  Queries per second  avg : 1.210 --------------

这样保证链接mysql以后, 默认都使用了UTF8编码

也能够查看全局变量

mysql> SHOW VARIABLES LIKE  'character_set_%' ; + --------------------------+---------------------------------------------+ | Variable_name            | Value                                       | + --------------------------+---------------------------------------------+ | character_set_client     | utf8                                        | | character_set_connection | utf8                                        | | character_set_database   | utf8                                        | | character_set_filesystem | binary                                       | | character_set_results    | utf8                                        | | character_set_server     | utf8                                        | | character_set_system     | utf8                                        | | character_sets_dir       | XXX\mysql\share\charsets\ | + --------------------------+---------------------------------------------+ 8 rows  in  set  (0.00 sec)

 

mysql> SHOW VARIABLES LIKE  'collation_%' ; + ----------------------+-----------------+ | Variable_name        | Value           | + ----------------------+-----------------+ | collation_connection | utf8_general_ci | | collation_database   | utf8_general_ci | | collation_server     | utf8_general_ci | + ----------------------+-----------------+ 3 rows  in  set  (0.00 sec)

 

已经创建的数据库和表须要进行修改和更新, 分别对数据库和表进行, 数据量小能够考虑导出为sql语句后修改

修改数据库, 表和字段的sql语法参考以下

修改数据库, 以test数据库为例

mysql> alter  database  `test` character  set  utf8;

 修改表为utf8, 以book表为例

mysql> alter  table  `book` character  set  utf8;

以book表的title字段为例

mysql> alter  table  `books_book` modify  `title` varchar (100) character  set  utf8;

 其中sql语句中的反引号[`]是用来转义的