解决：Illegal mix of collations (utf8_general_ci,COERCIBLE) and (latin1_swedish_ci,IMPLICIT)

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参考博文：

http://mayue85.blog.163.com/blog/static/553886092010317111348552/

在j2ee连接数据库时出现问题：Illegal mix of collations (utf8_general_ci,COERCIBLE) and (latin1_swedish_ci,IMPLICIT)

错误的意思是：结果集中有两种字符集。

反正就是说某两个地方编码格式不同，要解决问题就要将它们设置一致。

我的目标是把所有的属性设置成utf8。

查看mySQL字符集设置：

SHOW VARIABLES LIKE ‘character_set_%‘;
SHOW VARIABLES LIKE ‘collation_%‘;

将字符集设置全部改为utf8：

set character_set_database =utf8;
set character_set_results =utf8;
set character_set_server =utf8;
set character_set_system =utf8;
SET collation_server = utf8_general_ci
SET collation_database = utf8_general_ci

显示表各个列的编码属性：

show full columns from table_user;

修改表的编码属性：

alter table table_user convert to character set utf8;

解决：Illegal mix of collations (utf8_general_ci,COERCIBLE) and (latin1_swedish_ci,IMPLICIT)

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原文地址：http://www.cnblogs.com/susuguo/p/5078440.html