SQL에서 CROSS JOIN과 INNER JOIN
차이점은 무엇이며 CROSS JOIN그리고 INNER JOIN? 크로스 가입 : SELECT Movies.CustomerID, Movies.Movie, Customers.Age, Customers.Gender, Customers.[Education Level], Customers.[Internet Connection], Customers.[Marital Status], FROM Customers CROSS JOIN Movies 내부 가입 : SELECT Movies.CustomerID, Movies.Movie, Customers.Age, Customers.Gender, Customers.[Education Level], Customers.[Internet Connection], Customers.[Marital Status] FROM Customers INNER JOIN Movies ON Customers.CustomerID = Movies.CustomerID 어느 것이 …