From e6b764e9015ed45c34f7dc6f4d6dc42fe6a3582f Mon Sep 17 00:00:00 2001
From: jeanvalentin51 <valentin.j.gheorghe.com>
Date: Tue, 10 Dec 2019 09:28:13 -0500
Subject: [PATCH 1/6] exercise 1

---
 .idea/.gitignore              | 2 ++
 .idea/SQL.LetsGetTogether.iml | 9 +++++++++
 .idea/misc.xml                | 6 ++++++
 .idea/modules.xml             | 8 ++++++++
 .idea/vcs.xml                 | 6 ++++++
 answers/exercise1.sql         | 4 ++++
 6 files changed, 35 insertions(+)
 create mode 100644 .idea/.gitignore
 create mode 100644 .idea/SQL.LetsGetTogether.iml
 create mode 100644 .idea/misc.xml
 create mode 100644 .idea/modules.xml
 create mode 100644 .idea/vcs.xml

diff --git a/.idea/.gitignore b/.idea/.gitignore
new file mode 100644
index 0000000..e7e9d11
--- /dev/null
+++ b/.idea/.gitignore
@@ -0,0 +1,2 @@
+# Default ignored files
+/workspace.xml
diff --git a/.idea/SQL.LetsGetTogether.iml b/.idea/SQL.LetsGetTogether.iml
new file mode 100644
index 0000000..d6ebd48
--- /dev/null
+++ b/.idea/SQL.LetsGetTogether.iml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$" />
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>
\ No newline at end of file
diff --git a/.idea/misc.xml b/.idea/misc.xml
new file mode 100644
index 0000000..28a804d
--- /dev/null
+++ b/.idea/misc.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="JavaScriptSettings">
+    <option name="languageLevel" value="ES6" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/modules.xml b/.idea/modules.xml
new file mode 100644
index 0000000..a731dc1
--- /dev/null
+++ b/.idea/modules.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/SQL.LetsGetTogether.iml" filepath="$PROJECT_DIR$/.idea/SQL.LetsGetTogether.iml" />
+    </modules>
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 0000000..35eb1dd
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="" vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/answers/exercise1.sql b/answers/exercise1.sql
index e69de29..af35c9e 100644
--- a/answers/exercise1.sql
+++ b/answers/exercise1.sql
@@ -0,0 +1,4 @@
+SELECT *
+FROM Enrolments AS E
+LEFT JOIN Students AS S
+ON E.STUDENT_ID=S.STUDENT_ID;
\ No newline at end of file

From fa52b1c024cb5d2a19728e87563e1bb6f82efb82 Mon Sep 17 00:00:00 2001
From: jeanvalentin51 <valentin.j.gheorghe.com>
Date: Tue, 10 Dec 2019 09:31:19 -0500
Subject: [PATCH 2/6] exercise 2

---
 answers/exercise2.sql | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/answers/exercise2.sql b/answers/exercise2.sql
index e69de29..21195a8 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

From 982f149d3aceed09d673f8adee8490b6404f029f Mon Sep 17 00:00:00 2001
From: jeanvalentin51 <valentin.j.gheorghe.com>
Date: Tue, 10 Dec 2019 09:32:37 -0500
Subject: [PATCH 3/6] exercise 3

---
 answers/exercise3.sql | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/answers/exercise3.sql b/answers/exercise3.sql
index e69de29..0ea8cbd 100644
--- a/answers/exercise3.sql
+++ b/answers/exercise3.sql
@@ -0,0 +1,4 @@
+SELECT *
+FROM Enrolments
+LEFT JOIN STUDENTS
+ON Enrolments.StudentID=Students.StudentID;
\ No newline at end of file

From 69e61837baf7b87cd269316aba92415964c1e437 Mon Sep 17 00:00:00 2001
From: jeanvalentin51 <valentin.j.gheorghe.com>
Date: Tue, 10 Dec 2019 09:36:56 -0500
Subject: [PATCH 4/6] exercise 4

---
 answers/exercise4.sql | 1 +
 1 file changed, 1 insertion(+)

diff --git a/answers/exercise4.sql b/answers/exercise4.sql
index e69de29..7533456 100644
--- a/answers/exercise4.sql
+++ b/answers/exercise4.sql
@@ -0,0 +1 @@
+SELECT COUNTRY, COUNT(COUNTRY) AS STUDENT_PER_COUNTRY FROM STUDENTS GROUP BY COUNTRY;
\ No newline at end of file

From 6945bf6bce4d5c38798a50b2fc769fdec2347366 Mon Sep 17 00:00:00 2001
From: jeanvalentin51 <valentin.j.gheorghe.com>
Date: Tue, 10 Dec 2019 13:06:04 -0500
Subject: [PATCH 5/6] broup by country order most

---
 answers/exercise5.sql | 1 +
 1 file changed, 1 insertion(+)

diff --git a/answers/exercise5.sql b/answers/exercise5.sql
index e69de29..f0c02b6 100644
--- a/answers/exercise5.sql
+++ b/answers/exercise5.sql
@@ -0,0 +1 @@
+SELECT COUNTRY, COUNT(COUNTRY) AS STUDENTS_PER_COUNTRY FROM STUDENTS GROUP BY COUNTRY ORDER BY COUNTRY ASC;
\ No newline at end of file

From 598d7de5c055fdf11abf06f4e6db43baa2887ffb Mon Sep 17 00:00:00 2001
From: jeanvalentin51 <valentin.j.gheorghe.com>
Date: Tue, 10 Dec 2019 13:09:53 -0500
Subject: [PATCH 6/6] having

---
 answers/exercise6.sql | 1 +
 1 file changed, 1 insertion(+)

diff --git a/answers/exercise6.sql b/answers/exercise6.sql
index e69de29..3bceec3 100644
--- a/answers/exercise6.sql
+++ b/answers/exercise6.sql
@@ -0,0 +1 @@
+SELECT COUNTRY, COUNT(COUNTRY) AS STUDENTS_PER_COUNTRY FROM STUDENTS GROUP BY COUNTRY HAVING STUDENTS_PER_COUNTRY > 10 ORDER BY STUDENTS_PER_COUNTRY;
\ No newline at end of file