Illegal mix of collations ((latin1_swedish_ci,IMPLICIT) and (gbk_chinese_ci,COERCIBLE) for报错

Illegal mix of collations ((latin1_swedish_ci,IMPLICIT) and (gbk_chinese_ci,COERCIBLE) for operation '='
查看了数据库发现是建表时设置表的编码为latin1，而数据库server的连接是gbk_chinese_ci的方式。
把表的编码改了就可以了。
alter table users convert to character set GBK;