在操作MySQL数据库时,报“

error code [1267];

Illegal mix of collations (gbk_chinese_ci,IMPLICIT) and (utf8_general_ci,COERCIBLE) for operation 'like'

对于常见的乱码问题,有的在数据库本身已经为gbk或gb2312时候,但是查询出来却是乱码,这是因为mysql在连接的过程中还有道编码,因此将连接的编码设为gb2312或utf-8

即可,如:

jdbc:mysql://localhost:3306/ipanel?useUnicode=true&characterEncoding=UTF-8

hibernate和jdbc的参数设置是不一样,但大体相同,网上类似的资料很多。

最重要的是这个问题:

Illegal mix of collations (gbk_chinese_ci,IMPLICIT) and (gb2312_chinese_ci,IMPLICIT) for operation '='

相信有很多人碰到,意思是说字符编码不一样,不能进行比较,也就是说数据库内部的编码都不一样,有的数据是

gbk_chinese_ci,有的数据是gb2312_chinese_ci,因此解决此问题的核心就是将数据库所有的编码进行统一。

解决方案一:暂时
//恶心的gb2312不能使用,需要转utf-8再继续
$where = $where . iconv("gb2312","utf-8"," and USER_NAME='" . $uname . "'");

解决方案二:

进入命令行模式,

如果MySQL数据库已经安装好,可以使用下列SQL命令查看MySQL当前的字符集设置: 
mysql> SHOW VARIABLES LIKE 'character_set_%'; 
+--------------------------+----------------------------+ 
| Variable_name | Value | 
+--------------------------+----------------------------+ 
| character_set_client | latin1 | 
| character_set_connection | latin1 | 
| character_set_database | latin1 | 
| character_set_results | latin1 | 
| character_set_server | latin1 | 
| character_set_system | utf8 | 
| character_sets_dir | /usr/share/mysql/charsets/ | 
+--------------------------+----------------------------+ 
7 rows in set (0.00 sec)

mysql> SHOW VARIABLES LIKE 'collation_%'; 
+----------------------+-------------------+ 
| Variable_name | Value | 
+----------------------+-------------------+ 
| collation_connection | latin1_swedish_ci | 
| collation_database | latin1_swedish_ci | 
| collation_server | latin1_swedish_ci | 
+----------------------+-------------------+ 
3 rows in set (0.00 sec)

依次执行:

set character_set_client =gb2312;

set character_set_connection =gb2312;

set character_set_database =gb2312;

set character_set_results =gb2312;

set character_set_server =gb2312;

set character_set_system =gb2312; --此处utf-8也可以

然后执行:

SET collation_server = gb2312_chinese_ci

SET collation_database = gb2312_chinese_ci

SET collation_connection =gb2312_chinese_ci

执行完之后,请检查mysql下每个数据库,表,字段是否都是gb2312,不是则改过来,这样子就不会出现

Illegal mix of collations (gbk_chinese_ci,IMPLICIT) and (gb2312_chinese_ci,IMPLICIT) for operation '='这个错误了,网上有资料说要重装,其实根本就不必,改动其编码即可

*****************************

PHP5.2+MYSQL5.1+APACHE2.29  IE6,firefor2,firefox3 
      PHP网页向MYSQL数据库插入记录时出现如下问题。 
Illegal mix of collations (gbk_chinese_ci,IMPLICIT) and (latin1_swedish_ci,COERCIBLE) for operation '='        ???????????? 
解决方法:1.注意PHP网站  charset=UTF-8" 
              <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> 
                2.数据库连接设置为 utf8编码

<?php 
# FileName="Connection_php_mysql.htm" 
# Type="MYSQL" 
# HTTP="true" 
$hostname_member = "localhost"; 
$database_member = "member"; 
$username_member = "root"; 
$password_member = "123456"; 
$member = mysql_pconnect($hostname_member, $username_member, $password_member) or trigger_error(mysql_error(),E_USER_ERROR); 
mysql_query("set names gbk"); 
?> 
          请修改为  mysql_query("set names utf8"); 
          中文问题花去一天时间,请注意php和MYSQL编码发送相同问题。与MYSQL数据库编码无关 
          有问题联系

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