首先在數據庫里面輸入
mysql> show variables like'%char%'
-> ;
+--------------------------------------+----------------------------+
| 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 | /usr/share/mysql/charsets/ |
| validate_password_special_char_count | 1 |
+--------------------------------------+----------------------------+
9 rows in set (0.00 sec)
mysql> set character_set_database=utf8; #更改編碼屬性
Query OK, 0 rows affected, 1 warning (0.00 sec)
mysql> set character_set_server=utf8;
Query OK, 0 rows affected (0.00 sec)
mysql> set character_set_client=gbk;
Query OK, 0 rows affected (0.00 sec)
mysql> set character_set_connection=gbk;
Query OK, 0 rows affected (0.00 sec)
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> show variables like'%char%'
-> ;
+--------------------------------------+----------------------------+
| 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/share/mysql/charsets/ |
| validate_password_special_char_count | 1 |
+--------------------------------------+----------------------------+
9 rows in set (0.00 sec)
mysql> use test1
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
mysql> showtables
-> ;
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'showtables' at line 1
mysql> show tables;
+-----------------+
| Tables_in_test1 |
+-----------------+
| address |
| authors |
| book_m2m_author |
| books |
| customer |
| student |
| study_record |
+-----------------+
7 rows in set (0.00 sec)
mysql> insert into books (name) value('我')；
-> ;
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '；' at line 1
mysql> insert into books (name) value('我');
ERROR 1366 (HY000): Incorrect string value: '\xE6\x88\x91' for column 'name' at row 1
mysql> alter table books convert to character set utf8; #將數據表的編碼方式改成utf8
Query OK, 3 rows affected (0.02 sec)
Records: 3 Duplicates: 0 Warnings: 0
mysql> insert into books (name) value('我');
Query OK, 1 row affected (0.01 sec)
mysql> select * from books;
+----+------+----------+
| id | name | pub_date |
+----+------+----------+
| 1 | bbu1 | NULL |
| 2 | bbu2 | NULL |
| 3 | bbu3 | NULL |
| 4 | 我 | NULL |
+----+------+----------+
4 rows in set (0.00 sec)
mysql> select * from books;
+----+--------------+----------+
| id | name | pub_date |
+----+--------------+----------+
| 1 | bbu1 | NULL |
| 2 | bbu2 | NULL |
| 3 | bbu3 | NULL |
| 4 | 我 | NULL |
| 5 | 我的世界 | NULL |
+----+--------------+----------+
5 rows in set (0.00 sec)
mysql>
設置MYSQL數據庫編碼為UTF-8
1、 編輯MySql的配置文件
MySql的配置文件Windows下一般在系統目錄下或者在MySql的安裝目錄下名字叫my.ini，可以搜索，Linux下一般是/etc/my.cnf
--在 [mysqld] 標簽下加上以下內容：
default-character-set = utf8
character_set_server = utf8
注意：如果此標簽下已經存在“default-character-set=GBK”類似的內容，只需修改即可。
--在 [mysql] 標簽下加上一行
default-character-set = utf8
--在 [mysql.server]標簽下加上一行
default-character-set = utf8
--在 [mysqld_safe]標簽下加上一行
default-character-set = utf8
--在 [client]標簽下加上一行
default-character-set = utf8
2、 重新啟動MySql服務
Windows可在服務管理器中操作，也可使用命令行：
net stop mysql 回車
net start mysql 回車
服務名可能不一定為mysql，請按自己的設置
Linux下面可是用 service mysql restart
如果出現啟動失敗，請檢查配置文件有沒有設置錯誤
3、 查看設置結果
登錄MySql命令行客戶端：打開命令行
mysql –uroot –p 回車
輸入密碼
進入mysql后 執行 ：show variables like "% character %";
顯示結果應該類似如下：
| character_set_client | utf8 |
| character_set_connection | utf8 |
| character_set_database | utf8 |
| character_set_results | utf8 |
| character_set_server | utf8 |
| character_set_system | utf8 |
| character_sets_dir | /usr/share/mysql/charsets/ |
如果仍有編碼不是utf8的，請檢查配置文件，也可使用mysql命令設置：
set character_set_client = utf8;
set character_set_server = utf8;
set character_set_connection = utf8;
set character_set_database = utf8;
set character_set_results = utf8;
set collation_connection = utf8_general_ci;
set collation_database = utf8_general_ci;
set collation_server = utf8_general_ci;
另外：
建立數據庫時可以使用以下命令：
create database app_relation character set utf8;
use app_relation;
source app_relation.sql;
修改數據庫編碼的命令為：
alter database app_relation character set utf8;