A、Insert Into users(id,user_name) Values(100, "luhong")
B、Insert Into users(real_name,tel) Values("卢红","6545632")
C、Insert Into users(user_name,Email) Values("luhong", "")
D、Insert Into users(user_name,Email) Values("luhong", NULL)
正确答案:A,B
答案解析:略

A、Insert Into users(id,user_name) Values(100, "luhong")
B、Insert Into users(real_name,tel) Values("卢红","6545632")
C、Insert Into users(user_name,Email) Values("luhong", "")
D、Insert Into users(user_name,Email) Values("luhong", NULL)
正确答案:A,B
答案解析:略