ZipCodeCore · tokhij · Dec 12, 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 Enrollments.StudentID=Students.StudentID;
diff --git a/answers/exercise2.sql b/answers/exercise2.sql
@@ -0,0 +1,4 @@
+SELECT *
+FROM Enrollments
+INNER JOIN Students
+ON Enrollments.StudentID=Students.StudentID;
diff --git a/answers/exercise3.sql b/answers/exercise3.sql
@@ -0,0 +1,4 @@
+SELECT *
+FROM Enrollments
+RIGHT JOIN Students
+ON Enrollments.StudentID=Students.StudentID;
diff --git a/answers/exercise4.sql b/answers/exercise4.sql
@@ -0,0 +1 @@
+SELECT Country, COUNT (*), FROM Students GROUP BY Country;
diff --git a/answers/exercise5.sql b/answers/exercise5.sql
@@ -0,0 +1 @@
+SELECT Country, COUNT (*), FROM Students GROUP BY Country ORDER BY COUNT(*) DESC;
diff --git a/answers/exercise6.sql b/answers/exercise6.sql
@@ -0,0 +1,4 @@
+SELECT country, COUNT(*) FROM Students
+WHERE COUNT(*) > 10
+GROUP BY country
+ORDER BY COUNT(*) DESC;
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1 @@
		SELECT Country, COUNT (*), FROM Students GROUP BY Country;