不明确的列名

Question

我不知道这可能有什么问题：

请帮帮我：/

SELECT 
   Name, CourseID,  CourseName,  MeetingDays, MeetingTime, ProfID 
FROM  
   Course,  CourseSection,  Student
WHERE 
   Course.CourseID = CourseSection.CourseID
ORDER BY 
   Name, CourseName

Answer 1

列名CourseID出现在两个表中。为了做到正确，请使用<tablename>.CourseID之类的：

SELECT Name, Course.CourseID,  CourseName,  MeetingDays, MeetingTime, ProfID 

FROM  Course,  CourseSection,  Student

WHERE Course.CourseID = CourseSection.CourseID

ORDER BY Name, CourseName