Illegal mix of collations (gbk_chinese_ci,IMPLICIT) and (utf8_unicode_ci,IMPLICIT) for operation '='

直接指导定数据库的创建编码

GBK: create database `test2` DEFAULT CHARACTER SET gbk COLLATE gbk_chinese_ci;

UTF8:create database `test2` DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci;

上面的方法比下面的方法有效，下面的方法重启后好像就不生效了。

SET collation_database = gb2312_chinese_ci;