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mysql 中怎么设置字符集统一，针对这个问题，这篇文章详细介绍了相对应的分析和解答，希望可以帮助更多想解决这个问题的小伙伴找到更简单易行的方法。
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 Russian | cp866_general_ci | 1 |
| keybcs2 | DOS Kamenicky Czech-Slovak | keybcs2_general_ci | 1 |
| macce | Mac Central European | macce_general_ci | 1 |
| macroman | Mac West European | macroman_general_ci | 1 |
| cp852 | DOS Central European | cp852_general_ci | 1 |
| latin7 | ISO 8859-13 Baltic | latin7_general_ci | 1 |
| cp1251 | Windows Cyrillic | cp1251_general_ci | 1 |
| cp1256 | Windows Arabic | cp1256_general_ci | 1 |
| cp1257 | Windows Baltic | cp1257_general_ci | 1 |
| binary | Binary pseudo charset | binary | 1 |
| geostd8 | GEOSTD8 Georgian | geostd8_general_ci | 1 |
| cp932 | SJIS for Windows Japanese | cp932_japanese_ci | 2 |
| eucjpms | UJIS for Windows Japanese | eucjpms_japanese_ci | 3 |
+———-+—————————–+———————+——–+
以上查看 MySQL 字符集命令，适用于 Windows。
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
Shutting down MySQL [确定]
Starting MySQL. [确定]
[root@bogon ~]# mysql -u root -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 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：
修改的字符集
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)
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