Shulou(Shulou.com)05/31 Report--

In order to solve the problem of how to set the character set unification in mysql, this article introduces the corresponding analysis and solution in detail, hoping to help more partners who want to solve this problem to find a more simple and feasible way.

First, view the MySQL database server and database character set.

Mysql > show variables like'% char%'

+-

| Variable_name | Value |.

+-

| character_set_client | utf8 |. -- client character set

| character_set_connection | utf8 |.

| character_set_database | utf8 |. -- Database character set

| character_set_filesystem | binary |.

| character_set_results | utf8 |.

| character_set_server | utf8 |. -- Server character set

| character_set_system | utf8 |.

| character_sets_dir | D:\ MySQL Server 5.0\ share\ charsets\ |.

+-

Second, view the character set of the MySQL data Table (table).

Mysql > show table status from sqlstudy_db like'% countries%'

+-

| Name | Engine | Version | Row_format | Rows | Collation |.

+-

| countries | InnoDB | 10 | Compact | 11 | utf8_general_ci |.

+-

Third, view the character set of the MySQL data column (column).

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 |.

+-

Fourth, view the character sets supported by the currently installed MySQL.

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 |

+-- +

The above command to view the MySQL character set applies to Windows &.

Modify the MySQL character set under Liunx:

1. Find the location of the cnf file for MySQL

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

two。 Copy one of small.cnf, my-medium.cnf, my-huge.cnf, my-innodb-heavy-4G.cnf to / etc and name it my.cnf

Cp / usr/share/mysql/my-medium.cnf / etc/my.cnf

3. Modify my.cnf

Vi / etc/my.cnf

Add under [client]

Default-character-set=utf8

Add under [mysqld]

Default-character-set=utf8

4. Restart MySQL

[root@bogon ~] # / etc/rc.d/init.d/mysql restart

Shutting down MySQL [OK]

Starting MySQL. [OK]

[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.

Some other setting methods:

Modified character set

> use mydb

Mysql > alter database mydb character set utf-8

Create the character set of the specified database

Mysql > create database mydb character set utf-8

Modify through the configuration file:

Modify / var/lib/mysql/mydb/db.opt

Default-character-set=latin1

Default-collation=latin1_swedish_ci

For

Default-character-set=utf8

Default-collation=utf8_general_ci

Restart MySQL:

[root@bogon ~] # / etc/rc.d/init.d/mysql restart

Modify through the MySQL command line:

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)

This is the answer to the question about how to set the unified character set in mysql. I hope the above content can be of some help to you. If you still have a lot of doubts to be solved, you can follow the industry information channel for more related knowledge.

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.