From 9a8bf9a324a71cb8224c273864036ecaf752bcdc Mon Sep 17 00:00:00 2001
From: Nathan <nathan@zipcodes-MacBook-Pro-9.local>
Date: Thu, 29 Jul 2021 17:46:18 -0400
Subject: [PATCH] Finished lab

---
 .DS_Store             | Bin 0 -> 6148 bytes
 answers/exercise1.sql |   4 ++++
 answers/exercise2.sql |   4 ++++
 answers/exercise3.sql |   4 ++++
 answers/exercise4.sql |   3 +++
 answers/exercise5.sql |   4 ++++
 answers/exercise6.sql |   5 +++++
 7 files changed, 24 insertions(+)
 create mode 100644 .DS_Store

diff --git a/.DS_Store b/.DS_Store
new file mode 100644
index 0000000000000000000000000000000000000000..49c341a1b9c0a0480693843413a8dc22a4118b01
GIT binary patch
literal 6148
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literal 0
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diff --git a/answers/exercise1.sql b/answers/exercise1.sql
index e69de29..93032d7 100644
--- a/answers/exercise1.sql
+++ b/answers/exercise1.sql
@@ -0,0 +1,4 @@
+SELECT * 
+FROM Enrolments
+LEFT JOIN Students 
+ON Enrolments.StudentID=Students.StudentID;
diff --git a/answers/exercise2.sql b/answers/exercise2.sql
index e69de29..9dfb272 100644
--- a/answers/exercise2.sql
+++ b/answers/exercise2.sql
@@ -0,0 +1,4 @@
+SELECT * 
+FROM Enrolments
+INNER JOIN Students
+ON Enrolments.StudentID=Students.StudentID
\ No newline at end of file
diff --git a/answers/exercise3.sql b/answers/exercise3.sql
index e69de29..19d13ac 100644
--- a/answers/exercise3.sql
+++ b/answers/exercise3.sql
@@ -0,0 +1,4 @@
+SELECT * 
+FROM Enrolments 
+RIGHT JOIN Students
+ON Enrolments.StudentID=Students.StudentID;
\ No newline at end of file
diff --git a/answers/exercise4.sql b/answers/exercise4.sql
index e69de29..366064a 100644
--- a/answers/exercise4.sql
+++ b/answers/exercise4.sql
@@ -0,0 +1,3 @@
+SELECT COUNT (StudentID) AS NumberOfStudents, Country
+FROM Students
+GROUP BY Country;
\ No newline at end of file
diff --git a/answers/exercise5.sql b/answers/exercise5.sql
index e69de29..a7f9d95 100644
--- a/answers/exercise5.sql
+++ b/answers/exercise5.sql
@@ -0,0 +1,4 @@
+SELECT COUNT (StudentID) AS NumberOfStudents, Country
+FROM Students
+GROUP BY Country
+ORDER BY COUNT (StudentID) DESC;
\ No newline at end of file
diff --git a/answers/exercise6.sql b/answers/exercise6.sql
index e69de29..07bf7ef 100644
--- a/answers/exercise6.sql
+++ b/answers/exercise6.sql
@@ -0,0 +1,5 @@
+SELECT COUNT (StudentID) AS NumberOfStudents, Country 
+FROM Students 
+GROUP BY Country
+HAVING COUNT (StudentID) > 10
+ORDER BY COUNT(StudentID) DESC;
\ No newline at end of file