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最近做了一个项目，过程中发生了数据库乱码，从phpmyadmin中怎么设置不知道。我去啊！！想了想肯定是字符集设置不一致，php编码是对了，并且都是采用utf-8的字符集设置的，所以肯定是mysql字符集设置的问题。又用phpmyadmin设置了半天还是不行。奶奶的，索性不用phpmyadmin了，真费劲！！
直接打开了mysql的控制台，哈哈弄好了，希望下边的操作对你们有帮助，记得回哦，大家一起进步！！！
一、查看 MySQL 数据库服务器和数据库字符集。
mysql> show variables like '%char%';
-------------------------- ------------------------------------- ------
| Variable_name | Value |......
-------------------------- ------------------------------------- ------
| character_set_client | utf8 |...... -- 客户端字符集
| character_set_connection | utf8 |......
| character_set_database | utf8 |...... -- 数据库字符集
| character_set_filesystem | binary |......
| character_set_results | utf8 |......
| character_set_server | utf8 |...... -- 服务器字符集
| character_set_system | utf8 |......
| character_sets_dir | D:/MySQL Server 5.0/share/charsets/ |......
-------------------------- ------------------------------------- ------
二、查看 MySQL 数据表（table） 的字符集。
mysql> show table status from sqlstudy_db like '%countries%';
----------- -------- --------- ------------ ------ ----------------- ------
| Name | Engine | Version | Row_format | Rows | Collation |......
----------- -------- --------- ------------ ------ ----------------- ------
| countries | InnoDB | 10 | Compact | 11 | utf8_general_ci |......
----------- -------- --------- ------------ ------ ----------------- ------
三、查看 MySQL 数据列（column）的字符集。
mysql> show full columns from countries;
---------------------- ------------- ----------------- --------
| Field | Type | Collation | .......
---------------------- ------------- ----------------- --------
| countries_id | int(11) | NULL | .......
| countries_name | varchar(64) | utf8_general_ci | .......
| countries_iso_code_2 | char(2) | utf8_general_ci | .......
| countries_iso_code_3 | char(3) | utf8_general_ci | .......
| address_format_id | int(11) | NULL | .......
---------------------- ------------- ----------------- --------
四、查看当前安装的 MySQL 所支持的字符集。
mysql> show charset;
mysql> show char set;
---------- ----------------------------- --------------------- --------
| Charset | Description | Default collation | Maxlen |
---------- ----------------------------- --------------------- --------
| big5 | Big5 Traditional Chinese | big5_chinese_ci | 2 |
| dec8 | DEC West European | dec8_swedish_ci | 1 |
| cp850 | DOS West European | cp850_general_ci | 1 |
| hp8 | HP West European | hp8_english_ci | 1 |
| koi8r | KOI8-R Relcom Russian | koi8r_general_ci | 1 |
| latin1 | cp1252 West European | latin1_swedish_ci | 1 |
| latin2 | ISO 8859-2 Central European | latin2_general_ci | 1 |
| swe7 | 7bit Swedish | swe7_swedish_ci | 1 |
| ascii | US ASCII | ascii_general_ci | 1 |
| ujis | EUC-JP Japanese | ujis_japanese_ci | 3 |
| sjis | Shift-JIS Japanese | sjis_japanese_ci | 2 |
| hebrew | ISO 8859-8 Hebrew | hebrew_general_ci | 1 |
| tis620 | TIS620 Thai | tis620_thai_ci | 1 |
| euckr | EUC-KR Korean | euckr_korean_ci | 2 |
| koi8u | KOI8-U Ukrainian | koi8u_general_ci | 1 |
| gb2312 | GB2312 Simplified Chinese | gb2312_chinese_ci | 2 |
| greek | ISO 8859-7 Greek | greek_general_ci | 1 |
| cp1250 | Windows Central European | cp1250_general_ci | 1 |
| gbk | GBK Simplified Chinese | gbk_chinese_ci | 2 |
| latin5 | ISO 8859-9 Turkish | latin5_turkish_ci | 1 |
| armscii8 | ARMSCII-8 Armenian | armscii8_general_ci | 1 |
| utf8 | UTF-8 Unicode | utf8_general_ci | 3 |
| ucs2 | UCS-2 Unicode | ucs2_general_ci | 2 |
| cp866 | DOS 俄语 | cp866_general_ci | 1 |
|密钥BCS2 | DOS Kamenicky 捷克-斯洛伐克 | keybcs2_general_ci | keybcs2_general_ci | 1 |
|麦斯 | Mac 中欧 | | macce_general_ci | 1 |
|宏观人| Mac 西欧 |宏曼_将军_ci | 1 |
| cp852 | DOS 中欧 | | cp852_general_ci | 1 |
|拉丁7 | ISO 8859-13 波罗的海 | latin7_general_ci | | latin7_general_ci 1 |
| cp1251 | | Windows 西里尔字母 | cp1251_general_ci | | 1 |
| cp1256 | | Windows 阿拉伯语 | cp1256_general_ci | | 1 |
| cp1257 | | Windows 波罗的海 | cp1257_general_ci | | 1 |
|二进制 |二进制伪字符集 |二进制 | 1 |
|地理标准8 | GEOSTD8 格鲁吉亚语 | geostd8_general_ci | geostd8_general_ci | 1 |
| cp932 |适用于 Windows 日语的 SJIS | cp932_japanese_ci | cp932_japanese_ci 2 |
| eucjpms | Windows 版 UJIS 日语 | eucjpms_japanese_ci | 3 |
---------- ----------------------------- -------- ------------- --------
以上查看 MySQL 字符集命令，适用于 Windows & Linux。
Liunx下修改MySQL字符集：
1.查找MySQL的cnf文件的位置
find / -iname '*.cnf' -print
/usr/share/mysql/my-innodb-heavy -4G.cnf
/usr/share/mysql/my-large.cnf
/usr/share/mysql/my-small.cnf
/usr/share/mysql/my-medium.cnf
/usr/share/mysql/my-huge.cnf
/usr/share/texmf/web2c/texmf.cnf
/usr/share/texmf/web2c/mktex.cnf
/usr/ share/texmf/web2c/fmtutil.cnf
/usr/share/texmf/tex/xmltex/xmltexfmtutil.cnf
/usr/share/texmf/tex/jadetex/jadefmtutil.cnf
/usr/share /doc/MySQL-server-community-5.1.22/my-innodb-heavy-4G.cnf
/usr/share/doc/MySQL-server-community-5.1.22/my-large.cnf
/usr/share/doc/MySQL-server-community-5.1.22/my-small.cnf
/usr/share/doc/MySQL-server-community-5.1.22/my-medium.cnf
/usr/share/doc/MySQL-server-community-5.1.22/my-huge.cnf
2. 拷贝small.cnf、my-medium.cnf、my-huge.cnf、my-innodb -heavy-4G.cnf其中的一个到/etc下，命名为my.cnf
cp /usr/share/mysql/my-medium.cnf /etc/my.cnf
3. 修改my.cnf
vi /etc/my.cnf
在[client]下添加
default-character-set=utf8
在[mysqld]下添加
default-character-set= utf8
4.重新启动 MySQL
[root@bogon ~]# /etc/rc.d/init.d/mysql restart
关闭 MySQL [ 确定 ]
启动 MySQL。 [ 确定 ]
[root@bogon ~]# mysql -u root -p
输入密码：
欢迎使用 MySQL 监控。命令以 ; 结尾或/g。
您的 MySQL 连接 ID 是 1
Server version: 5.1.22-rc-community-log MySQL Community Edition (GPL)
Type 'help;' or '/h' for help. Type '/c' to clear the buffer.
其他的一些设置方法：
修改数据库的字符集
mysql>use mydb
mysql>alter database mydb character set utf-8;
创建数据库指定数据库的字符集
mysql>create database mydb character set utf-8;
通过配置文件修改:
修改/var/lib/mysql/mydb/db.opt
default-character-set=latin1
default-collation=latin1_swedish_ci
为
default-character-set=utf8
default-collation=utf8_general_ci
重起MySQL:
[root@bogon ~]# /etc/rc.d/init.d/mysql restart
通过MySQL命令行修改:
mysql> set character_set_client=utf8;
Query OK, 0 rows affected (0.00 sec)
mysql> set character_set_connection=utf8;
Query OK, 0 rows affected (0.00 sec)
mysql> set character_set_database=utf8;
Query OK, 0 rows affected (0.00 sec)
mysql> set character_set_results=utf8;
Query OK, 0 rows affected (0.00 sec)
mysql> set character_set_server=utf8;
Query OK, 0 rows affected (0.00 sec)
mysql> set character_set_system=utf8;
Query OK, 0 rows affected (0.01 sec)
mysql> set collation_connection=utf8;
Query OK, 0 rows affected (0.01 sec)
mysql> set collation_database=utf8;
Query OK, 0 rows affected (0.01 sec)
mysql> set collation_server=utf8;
Query OK, 0 rows affected (0.01 sec)
作者“You_Can”
