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completed queries #14

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1 change: 1 addition & 0 deletions answers/exercise1.sql
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SELECT * FROM Enrolments LEFT JOIN Students ON Enrolments.id = Students.id;
1 change: 1 addition & 0 deletions answers/exercise2.sql
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SELECT * FROM Enrolments INNER JOIN Students ON Enrolments.StudentID = Students.StudentID;
1 change: 1 addition & 0 deletions answers/exercise3.sql
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SELECT * FROM Enrolments RIGHT JOIN Students ON Enrolments.StudentID = Students.StudentID;
1 change: 1 addition & 0 deletions answers/exercise4.sql
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SELECT COUNT(StudentID) FROM Students GROUP BY Country;
1 change: 1 addition & 0 deletions answers/exercise5.sql
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SELECT COUNT(StudentID) FROM Students GROUP BY Country ORDER BY COUNT(StudentID) ASC;
1 change: 1 addition & 0 deletions answers/exercise6.sql
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SELECT COUNT(StudentID) FROM Students GROUP BY Country ORDER BY COUNT(StudentID) >10 ASC;