ORA 00904 错误:无效标识符

2021-12-06 00:00:00 sql oracle ora-00904

我在我的虚拟 XP 中安装了 Oracle 10g 并使用

I have installed Oracle 10g in my virtual XP and created a table using

create table reg1 (
  fname varchar2(30),
  lname varchar2(30),
  addr varchar2(30),
  mail varchar2(30),
  occu varchar2(30),
  uname varchar2(30),
  passwd varchar2(30)
);

并且表创建成功.但是当我尝试通过像

and the table created successfully.But when I am trying to fetch the values by simple query like

select fname, lname 
  from reg1 
 where uname="bbb";

我收到类似

ORA-00904: "bbb": 无效标识符

ORA-00904: "bbb": invalid identifier

我无法理解我在这里做错了什么.

I cannot understand what I have done wrong here.

推荐答案

使用单引号.

select fname,lname from reg1 where uname='bbb';

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