sqlserver查询空口令用户需要执行的sql语句为(____)。
A.Select name,Password from syslogins where password is null order by name
B.Select name,Password from syslogins where password is none order by name,Password
C.Select name,Password from syslogins where password=null order by name,Password
D.Select name,Password from syslogins where password=none order by name
正确答案是A