linux 設定mysql 資料庫編碼utf8

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在MySQL資料庫中， 當插入資料無法支援中文時， 可將該資料庫的編碼集設定為utf8， 故在建立資料庫時， 將資料庫編碼集及其他字元編碼設定為utf8。

如果之前建立的資料庫的資料庫編碼集不為utf8， 可以進行如下設定：

mysql> alter database 資料庫名 character set utf8;

或刪除原有舊的資料庫， 1117.www.qixoo.qixoo.com再重新建立新的資料庫並將預設的編碼集設定為utf8:

mysql> create database 資料庫名 DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci;

* 刪除資料庫：

mysql> drop database dbname if exists dbname;

* 建立資料庫：

mysql> create database dbname if not exists dbname；

為確保 create database dbname 命令建立的資料庫編碼集為utf8， 我們可對mysql的設定檔進行修改windows下的mysql設定檔為my.ini， my.ini存在於mysql的安裝目錄下linux下的mysql設定檔為my.cnf， mysql.cnf存在於mysql的安裝目錄下或/etc/下在my.cnf或my.ini下找到[mysqld]， 在其下方添加一行：

character_set_server=utf8

然後儲存退出， 並重啟mysql服務即可。

查看字元編碼：

mysql> show variables like ‘%character%‘;

或

mysql> show variables like ‘character_set_%‘;

或

mysql> use 資料庫名；

mysql> \s

或

mysql> use 資料庫名

mysql> status;

具體操作如下：

mysql> SHOW VARIABLES LIKE ‘character_set_%‘;
+--------------------------+----------------------------------+
| Variable_name            | Value                            |
+--------------------------+----------------------------------+
| character_set_client    | utf8                            |
| character_set_connection | utf8                            |
| character_set_database  | latin1                          |
| character_set_filesystem | binary                          |
| character_set_results    | utf8                            |
| character_set_server    | latin1                          |
| character_set_system    | utf8                            |
| character_sets_dir      | qkxue.net/usr/local/mysql/share/charsets/ |
+--------------------------+----------------------------------+
8 rows in set (0.00 sec)


mysql> set character_set_database = utf8;
Query OK, 0 rows affected (0.00 sec)


mysql> set character_set_server = utf8;
Query OK, 0 rows affected (0.00 sec)


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      | /usr/local/mysql/share/charsets/ |
+--------------------------+----------------------------------+
8 rows in set (0.00 sec)


mysql> use db_ets;
Database changed
mysql> \s
--------------
mysql  Ver 14.14 Distrib 5.7.5-m15, for linux-glibc2.5 (x86_64) using  EditLine wrapper


Connection id:  16
Current database: db_ets
Current user:
SSL:   Not in use
Current pager:  stdout
Using outfile:  ‘‘
Using delimiter: ;
Server version:  5.7.5-m15 MySQL Community Server (GPL)
Protocol version: 10
Connection:  Localhost via UNIX socket
Server characterset: utf8
Db    characterset: utf8
Client characterset: utf8
Conn.  characterset: utf8
UNIX socket:  /tmp/mysql.sock
Uptime:   23 min 45 sec


Threads: 3  Questions: 487  Slow queries: 0  Opens: 144  Flush tables: 1  Open tables: 129  Queries per second avg: 0.341
--------------


mysql> status;
--------------
mysql  Ver 14.14 Distrib 5.7.5-m15, for linux-glibc2.5 (x86_64) using  EditLine wrapper


Connection id:  16
Current database: db_ets
Current user:
SSL:   Not in use
Current pager:  stdout
Using outfile:  ‘‘
Using delimiter: ;
Server version:  5.7.5-m15 MySQL Community Server (GPL)
Protocol version: 10
Connection:  Localhost via UNIX socket
Server characterset: utf8
Db    characterset: utf8
Client characterset: utf8
Conn.  characterset: utf8
UNIX socket:  /tmp/mysql.sock
Uptime:   24 min 14 sec


Threads: 5  Questions: 501  Slow queries: 0  Opens: 144  Flush tables: 1  Open tables: 129  Queries per second avg: 0.344
--------------


mysql>

MySQL修改預設字元集為utf-8 

linux 設定mysql 資料庫編碼utf8