SQL练习题
1.一道面试题
select ascii(mid(user(),1,2)),如果中间的","被过滤了，该怎么绕过
1、select substr(user() from 1 for 1);
2、select user() like 'a%'
3、select user() regexp '^a'
select ascii(mid(user(),1,2)),如果中间的","被过滤了，该怎么绕过
1、select substr(user() from 1 for 1);
2、select user() like 'a%'
3、select user() regexp '^a'