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我正在使用具有临时关系的SQL语句,并且我收到错误 ORA-009933: SQL command not properly ended

我没有看到该陈述有任何问题,所以非常感谢任何帮助.声明是:

SELECT Temp.name,
       Temp.AvgSalary
FROM   (SELECT A.aid,
               A.aname       AS name,
               AVG(E.salary) AS AvgSalary
        FROM   Aircraft A,
               Certified C,
               Employees E) AS Temp; 

谢谢