查询:SELECT COUNT(*) FROM `unicode_ci` a,`qwifi.general_ci` b WHERE a.`username` = b.`username` LIMIT 0, 1000<br /><br />错误代码: 1267<br />Illegal mix of collations (utf8_unicode_ci,IMPLICIT) and (utf8_general_ci,IMPLICIT) for operation '='<br /><br />解决办法:修改字符集校验码<br /> ...【阅读全文】