mysql 5.5 資料庫 utf8改utf8mb4
阿新 • • 發佈：2018-12-09
由於需要用到utf8mb4，之前是utf8現在給改成utf8mb4
檢視當前環境
SHOW VARIABLES WHERE Variable_name LIKE 'character\_set\_%' OR Variable_name LIKE 'collation%'; +--------------------------+--------------------+ | Variable_name | Value | +--------------------------+--------------------+ | character_set_client | latin1 | | character_set_connection | latin1 | | character_set_database | utf8mb4 | | character_set_filesystem | binary | | character_set_results | latin1 | | character_set_server | utf8mb4 | | character_set_system | utf8 | | collation_connection | latin1_swedish_ci | | collation_database | utf8mb4_general_ci | | collation_server | utf8mb4_general_ci | +--------------------------+--------------------+
開啟MySQL的配置檔案，將字符集的配置修改成如下：
[client] default-character-set = utf8mb4 [mysql] default-character-set = utf8mb4 [mysqld] character-set-client-handshake = FALSE character-set-server = utf8mb4 collation-server = utf8mb4_general_ciinit_connect='SET NAMES utf8mb4'
修改後
[email protected]:(none)>SHOW VARIABLES WHERE Variable_name LIKE 'character\_set\_%' OR Variable_name LIKE 'collation%'; +--------------------------+--------------------+ | Variable_name | Value | +--------------------------+--------------------+ | character_set_client | utf8mb4 | | character_set_connection | utf8mb4 | | character_set_database | utf8mb4 | | character_set_filesystem | binary | | character_set_results | utf8mb4 | | character_set_server | utf8mb4 | | character_set_system | utf8 | | collation_connection | utf8mb4_unicode_ci | | collation_database | utf8mb4_unicode_ci | | collation_server | utf8mb4_unicode_ci | +--------------------------+--------------------+[email protected]:(none)>\s;
--------------
mysql Ver 14.14 Distrib 5.1.73, for redhat-linux-gnu (x86_64) using readline 5.1
Connection id: 61
Current database:
Current user: [email protected]
SSL: Not in use
Current pager: stdout
Using outfile: ''
Using delimiter: ;
Server version: 5.5.36-log Source distribution
Protocol version: 10
Connection: Localhost via UNIX socket
Server characterset: utf8mb4
Db characterset: utf8mb4
Client characterset: utf8mb4
Conn. characterset: utf8mb4
UNIX socket: /tmp/mysql.sock
Uptime: 3 min 22 sec
修改後發現連線報錯
mysql: Character set 'utf8mb4' is not a compiled character set and is not specified in the '/usr/share/mysql/charsets/Index.xml' file
修改/usr/share/mysql/charsets/Index.xml
修改前
<charset name="utf8">
<family>Unicode</family>
<description>UTF-8 Unicode</description>
<alias>utf-8</alias>
<collation name="utf8_general_ci" id="33">
<flag>primary</flag>
<flag>compiled</flag>
</collation>
<collation name="utf8_bin" id="83">
<flag>binary</flag>
<flag>compiled</flag>
</collation>
</charset>
修改後
<charset name="utf8mb4">
<family>Unicode</family>
<description>UTF-8 Unicode</description>
<alias>utf-8</alias>
<collation name="utf8_general_ci" id="33">
<flag>primary</flag>
<flag>compiled</flag>
</collation>
<collation name="utf8_bin" id="83">
<flag>binary</flag>
<flag>compiled</flag>
</collation>
</charset>
由於需要用到utf8mb4，之前是utf8現在給改成utf8mb4
檢視當前環境
SHOW VARIABLES WHERE Variable_name LIKE 'character\_set\_%' OR Variable_name LIKE 'collation%'; +--------------------------+--------------------+ | Variable_name | Value | +--------------------------+--------------------+ | character_set_client | latin1 | | character_set_connection | latin1 | | character_set_database | utf8mb4 | | character_set_filesystem | binary | | character_set_results | latin1 | | character_set_server | utf8mb4 | | character_set_system | utf8 | | collation_connection | latin1_swedish_ci | | collation_database | utf8mb4_general_ci | | collation_server | utf8mb4_general_ci | +--------------------------+--------------------+
開啟MySQL的配置檔案，將字符集的配置修改成如下：
[client] default-character-set = utf8mb4 [mysql] default-character-set = utf8mb4 [mysqld] character-set-client-handshake = FALSE character-set-server = utf8mb4 collation-server = utf8mb4_general_ciinit_connect='SET NAMES utf8mb4'
修改後
[email protected]:(none)>SHOW VARIABLES WHERE Variable_name LIKE 'character\_set\_%' OR Variable_name LIKE 'collation%'; +--------------------------+--------------------+ | Variable_name | Value | +--------------------------+--------------------+ | character_set_client | utf8mb4 | | character_set_connection | utf8mb4 | | character_set_database | utf8mb4 | | character_set_filesystem | binary | | character_set_results | utf8mb4 | | character_set_server | utf8mb4 | | character_set_system | utf8 | | collation_connection | utf8mb4_unicode_ci | | collation_database | utf8mb4_unicode_ci | | collation_server | utf8mb4_unicode_ci | +--------------------------+--------------------+
[email protected]:(none)>\s;
--------------
mysql Ver 14.14 Distrib 5.1.73, for redhat-linux-gnu (x86_64) using readline 5.1
Connection id: 61
Current database:
Current user: [email protected]
SSL: Not in use
Current pager: stdout
Using outfile: ''
Using delimiter: ;
Server version: 5.5.36-log Source distribution
Protocol version: 10
Connection: Localhost via UNIX socket
Server characterset: utf8mb4
Db characterset: utf8mb4
Client characterset: utf8mb4
Conn. characterset: utf8mb4
UNIX socket: /tmp/mysql.sock
Uptime: 3 min 22 sec
修改後發現連線報錯
mysql: Character set 'utf8mb4' is not a compiled character set and is not specified in the '/usr/share/mysql/charsets/Index.xml' file
修改/usr/share/mysql/charsets/Index.xml
修改前
<charset name="utf8">
<family>Unicode</family>
<description>UTF-8 Unicode</description>
<alias>utf-8</alias>
<collation name="utf8_general_ci" id="33">
<flag>primary</flag>
<flag>compiled</flag>
</collation>
<collation name="utf8_bin" id="83">
<flag>binary</flag>
<flag>compiled</flag>
</collation>
</charset>
修改後
<charset name="utf8mb4">
<family>Unicode</family>
<description>UTF-8 Unicode</description>
<alias>utf-8</alias>
<collation name="utf8_general_ci" id="33">
<flag>primary</flag>
<flag>compiled</flag>
</collation>
<collation name="utf8_bin" id="83">
<flag>binary</flag>
<flag>compiled</flag>
</collation>
</charset>