ZipCodeCore · kshields412 · Dec 9, 2019
diff --git a/.idea/.gitignore b/.idea/.gitignore
diff --git a/.idea/SQL.LetsGetTogether.iml b/.idea/SQL.LetsGetTogether.iml
diff --git a/.idea/misc.xml b/.idea/misc.xml
diff --git a/.idea/modules.xml b/.idea/modules.xml
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
diff --git a/answers/exercise1.sql b/answers/exercise1.sql
@@ -0,0 +1,4 @@
+SELECT *
+FROM Enrollments
+LEFT JOIN Students
+ON Students.StudentID = Enrollments.StudentID;
diff --git a/answers/exercise2.sql b/answers/exercise2.sql
@@ -0,0 +1,4 @@
+SELECT *
+FROM Enrolments
+INNER JOIN Students
+ON Enrolments.StudentID=Students.StudentID;
diff --git a/answers/exercise3.sql b/answers/exercise3.sql
@@ -0,0 +1,4 @@
+SELECT *
+FROM Enrollments
+RIGHT JOIN Students
+ON Students.StudentID = Enrollments.StudentID;
diff --git a/answers/exercise4.sql b/answers/exercise4.sql
@@ -0,0 +1,3 @@
+SELECT Country, COUNT(*) AS NumOfStudents
+FROM Students
+GROUP BY Country;
diff --git a/answers/exercise5.sql b/answers/exercise5.sql
@@ -0,0 +1,4 @@
+SELECT Country, COUNT(*) AS NumOfStudents
+FROM Students
+GROUP BY Country
+ORDER BY COUNT(*) DESC;
diff --git a/answers/exercise6.sql b/answers/exercise6.sql
@@ -0,0 +1,5 @@
+SELECT Country, COUNT(*) AS NumOfStudents
+FROM Students
+GROUP BY Country
+ORDER BY COUNT(*) DESC
+WHERE COUNT > 10;