我的SQL SELECT查询有什么问题？

我试图从表中获取所有信息a,但得到错误:

ORA-00904:"A":无效的标识符.

这是我的查询:

SELECT a
FROM FORMS a,
     APPLICATIONS b
WHERE b.APPLICATION_ID = a.APPLICATION_ID
  AND a.APPLICATION_ID = 14980

怎么了？

SELECT a.* 
FROM FORMS a, APPLICATIONS b 
WHERE b.APPLICATION_ID = a.APPLICATION_ID AND a.APPLICATION_ID = 14980;

最好使用新语法:

SELECT a.*
FROM FORMS a JOIN APPLICATIONS b ON b.APPLICATION_ID = a.APPLICATION_ID 
WHERE a.APPLICATION_ID = 14980;