From bcedc4affe6e1c75695a76da7921a793f66a3c85 Mon Sep 17 00:00:00 2001
From: jeanvalentin51 <valentin.j.gheorghe.com>
Date: Mon, 25 Nov 2019 19:47:29 -0500
Subject: [PATCH 01/21] create database

---
 .idea/.gitignore              | 3 +++
 .idea/SQL.BuildAndDestroy.iml | 9 +++++++++
 .idea/misc.xml                | 6 ++++++
 .idea/modules.xml             | 8 ++++++++
 .idea/vcs.xml                 | 6 ++++++
 answers/exercise1.sql         | 1 +
 6 files changed, 33 insertions(+)
 create mode 100644 .idea/.gitignore
 create mode 100644 .idea/SQL.BuildAndDestroy.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..0e40fe8
--- /dev/null
+++ b/.idea/.gitignore
@@ -0,0 +1,3 @@
+
+# Default ignored files
+/workspace.xml
\ No newline at end of file
diff --git a/.idea/SQL.BuildAndDestroy.iml b/.idea/SQL.BuildAndDestroy.iml
new file mode 100644
index 0000000..d6ebd48
--- /dev/null
+++ b/.idea/SQL.BuildAndDestroy.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..9bfba77
--- /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.BuildAndDestroy.iml" filepath="$PROJECT_DIR$/.idea/SQL.BuildAndDestroy.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..07c2318 100644
--- a/answers/exercise1.sql
+++ b/answers/exercise1.sql
@@ -0,0 +1 @@
+CREATE DATABASE myNewDB;
\ No newline at end of file

From 0ec3c24b4f06d3cd3c9d7939d15bff83366f0913 Mon Sep 17 00:00:00 2001
From: jeanvalentin51 <valentin.j.gheorghe.com>
Date: Mon, 25 Nov 2019 19:48:45 -0500
Subject: [PATCH 02/21] gitignore

---
 .idea/.gitignore | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/.idea/.gitignore b/.idea/.gitignore
index 0e40fe8..f8a1927 100644
--- a/.idea/.gitignore
+++ b/.idea/.gitignore
@@ -1,3 +1,16 @@
 
 # Default ignored files
-/workspace.xml
\ No newline at end of file
+/workspace.xml
+
+.idea/*
+*.iml
+*/target/*
+*/target/**
+.classpath
+.project
+.settings/
+
+# Apple files
+*.DS_Store
+.AppleDouble
+.LSOverride
\ No newline at end of file

From 04a9a41acd63a402551d91ff16b5311e5f4f9559 Mon Sep 17 00:00:00 2001
From: jeanvalentin51 <valentin.j.gheorghe.com>
Date: Mon, 25 Nov 2019 19:50:31 -0500
Subject: [PATCH 03/21] drop db

---
 .idea/inspectionProfiles/Project_Default.xml | 7 +++++++
 answers/exercise2.sql                        | 1 +
 2 files changed, 8 insertions(+)
 create mode 100644 .idea/inspectionProfiles/Project_Default.xml

diff --git a/.idea/inspectionProfiles/Project_Default.xml b/.idea/inspectionProfiles/Project_Default.xml
new file mode 100644
index 0000000..be4b286
--- /dev/null
+++ b/.idea/inspectionProfiles/Project_Default.xml
@@ -0,0 +1,7 @@
+<component name="InspectionProjectProfileManager">
+  <profile version="1.0">
+    <option name="myName" value="Project Default" />
+    <inspection_tool class="SqlDialectInspection" enabled="false" level="WARNING" enabled_by_default="false" />
+    <inspection_tool class="SqlNoDataSourceInspection" enabled="false" level="WARNING" enabled_by_default="false" />
+  </profile>
+</component>
\ No newline at end of file
diff --git a/answers/exercise2.sql b/answers/exercise2.sql
index e69de29..e7487f3 100644
--- a/answers/exercise2.sql
+++ b/answers/exercise2.sql
@@ -0,0 +1 @@
+DROP DATABASE myNewDB;
\ No newline at end of file

From 35dc8094e91b155aa4401cbe0fc83bb348232bd6 Mon Sep 17 00:00:00 2001
From: jeanvalentin51 <valentin.j.gheorghe.com>
Date: Mon, 25 Nov 2019 19:53:20 -0500
Subject: [PATCH 04/21] create table

---
 answers/exercise3.sql | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/answers/exercise3.sql b/answers/exercise3.sql
index e69de29..adba91f 100644
--- a/answers/exercise3.sql
+++ b/answers/exercise3.sql
@@ -0,0 +1,7 @@
+CREATE TABLE Users{
+    UserID int,
+    LastName varchar(255),
+    FirstName varchar(255),
+    Adress varchar(255),
+    City varchar(255)
+};
\ No newline at end of file

From 01ab0dcc8c25580f5ab6eb300db6eca56fe01205 Mon Sep 17 00:00:00 2001
From: jeanvalentin51 <valentin.j.gheorghe.com>
Date: Mon, 25 Nov 2019 19:54:31 -0500
Subject: [PATCH 05/21] drop table

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

diff --git a/answers/exercise4.sql b/answers/exercise4.sql
index e69de29..fe6a7f5 100644
--- a/answers/exercise4.sql
+++ b/answers/exercise4.sql
@@ -0,0 +1 @@
+DROP TABLE Users;
\ No newline at end of file

From 6280c2d706333f19c4982c629f3bd4e532dce3c6 Mon Sep 17 00:00:00 2001
From: jeanvalentin51 <valentin.j.gheorghe.com>
Date: Mon, 25 Nov 2019 19:56:11 -0500
Subject: [PATCH 06/21] truncate

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

diff --git a/answers/exercise5.sql b/answers/exercise5.sql
index e69de29..12321ad 100644
--- a/answers/exercise5.sql
+++ b/answers/exercise5.sql
@@ -0,0 +1 @@
+TRUNCATE TABLE Users;
\ No newline at end of file

From c5f48269cec3be0c7298afc9874a4950f054e0cd Mon Sep 17 00:00:00 2001
From: jeanvalentin51 <valentin.j.gheorghe.com>
Date: Tue, 26 Nov 2019 08:42:24 -0500
Subject: [PATCH 07/21] add column

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

diff --git a/answers/exercise6.sql b/answers/exercise6.sql
index e69de29..9782ded 100644
--- a/answers/exercise6.sql
+++ b/answers/exercise6.sql
@@ -0,0 +1 @@
+ALTER TABLE Users ADD Birthday DATE;
\ No newline at end of file

From 1bcebad2900ce5644775352a4ff03f3273388bb6 Mon Sep 17 00:00:00 2001
From: jeanvalentin51 <valentin.j.gheorghe.com>
Date: Tue, 26 Nov 2019 08:52:23 -0500
Subject: [PATCH 08/21] drop column

---
 answers/exercise7.sql | 1 +
 1 file changed, 1 insertion(+)

diff --git a/answers/exercise7.sql b/answers/exercise7.sql
index e69de29..550ea79 100644
--- a/answers/exercise7.sql
+++ b/answers/exercise7.sql
@@ -0,0 +1 @@
+ALTER TABLE Users DROP COLUMN Birthday;
\ No newline at end of file

From aba9ea615420676323085de710f9a3972487a805 Mon Sep 17 00:00:00 2001
From: jeanvalentin51 <valentin.j.gheorghe.com>
Date: Tue, 26 Nov 2019 08:58:45 -0500
Subject: [PATCH 09/21] insert

---
 answers/exercise8.sql | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/answers/exercise8.sql b/answers/exercise8.sql
index e69de29..dde112e 100644
--- a/answers/exercise8.sql
+++ b/answers/exercise8.sql
@@ -0,0 +1,3 @@
+INSERT INTO Students
+(StudentName, Address, City, PostalCode, Country)
+VALUES ("Jane Doe", "57 Union St", "Glasgow", "G13RB", "Scotland");
\ No newline at end of file

From 8c0d4ad9d4a9b4747eb7c4b6a2ca5b99b8500c89 Mon Sep 17 00:00:00 2001
From: jeanvalentin51 <valentin.j.gheorghe.com>
Date: Tue, 26 Nov 2019 09:04:24 -0500
Subject: [PATCH 10/21] NOT

---
 answers/exercise9.sql | 1 +
 1 file changed, 1 insertion(+)

diff --git a/answers/exercise9.sql b/answers/exercise9.sql
index e69de29..6292c6c 100644
--- a/answers/exercise9.sql
+++ b/answers/exercise9.sql
@@ -0,0 +1 @@
+SELECT * FROM Students WHERE NOT City = 'Philadelphia';
\ No newline at end of file

From 27ecbdc1b1548e2b3825f1c683c7f6dbcaf4026b Mon Sep 17 00:00:00 2001
From: jeanvalentin51 <valentin.j.gheorghe.com>
Date: Tue, 26 Nov 2019 09:05:53 -0500
Subject: [PATCH 11/21] matching condition

---
 answers/exercise10.sql | 1 +
 1 file changed, 1 insertion(+)

diff --git a/answers/exercise10.sql b/answers/exercise10.sql
index e69de29..1fa5e76 100644
--- a/answers/exercise10.sql
+++ b/answers/exercise10.sql
@@ -0,0 +1 @@
+SELECT * FROM Students WHERE City IN ('Philadelphia', 'Trenton')
\ No newline at end of file

From 91c3d29760f9fcd013569096838719ef1f5ffbfe Mon Sep 17 00:00:00 2001
From: jeanvalentin51 <valentin.j.gheorghe.com>
Date: Tue, 26 Nov 2019 09:07:05 -0500
Subject: [PATCH 12/21] order by asc

---
 answers/exercise11.sql | 1 +
 1 file changed, 1 insertion(+)

diff --git a/answers/exercise11.sql b/answers/exercise11.sql
index e69de29..3d56eb0 100644
--- a/answers/exercise11.sql
+++ b/answers/exercise11.sql
@@ -0,0 +1 @@
+SELECT * FROM Students ORDER BY City;
\ No newline at end of file

From ee651b4e726ca91877e14e39cbea7c1e22e7ef2c Mon Sep 17 00:00:00 2001
From: jeanvalentin51 <valentin.j.gheorghe.com>
Date: Tue, 26 Nov 2019 09:20:52 -0500
Subject: [PATCH 13/21] order desc

---
 answers/exercise12.sql | 1 +
 1 file changed, 1 insertion(+)

diff --git a/answers/exercise12.sql b/answers/exercise12.sql
index e69de29..387247f 100644
--- a/answers/exercise12.sql
+++ b/answers/exercise12.sql
@@ -0,0 +1 @@
+SELECT * FROM Students ORDER BY City DESC;
\ No newline at end of file

From 2d2e06c14ea9e3e28adf509d6c06fbec0d381f42 Mon Sep 17 00:00:00 2001
From: jeanvalentin51 <valentin.j.gheorghe.com>
Date: Tue, 26 Nov 2019 09:24:13 -0500
Subject: [PATCH 14/21] order by multiple

---
 answers/exercise13.sql | 1 +
 1 file changed, 1 insertion(+)

diff --git a/answers/exercise13.sql b/answers/exercise13.sql
index e69de29..795abb6 100644
--- a/answers/exercise13.sql
+++ b/answers/exercise13.sql
@@ -0,0 +1 @@
+SELECT * FROM Students ORDER BY Country, City;
\ No newline at end of file

From 85889e3e8559cf29f83786b0f715ca4528ac4804 Mon Sep 17 00:00:00 2001
From: jeanvalentin51 <valentin.j.gheorghe.com>
Date: Tue, 26 Nov 2019 09:38:28 -0500
Subject: [PATCH 15/21] not null

---
 answers/exercise14.sql | 1 +
 1 file changed, 1 insertion(+)

diff --git a/answers/exercise14.sql b/answers/exercise14.sql
index e69de29..e562e34 100644
--- a/answers/exercise14.sql
+++ b/answers/exercise14.sql
@@ -0,0 +1 @@
+SELECT * FROM Students WHERE PostalCode IS NULL;
\ No newline at end of file

From 5f5d9592dabfb089ea23545d1ffcd698b9acef7d Mon Sep 17 00:00:00 2001
From: jeanvalentin51 <valentin.j.gheorghe.com>
Date: Tue, 26 Nov 2019 09:39:08 -0500
Subject: [PATCH 16/21] not null

---
 answers/exercise15.sql | 1 +
 1 file changed, 1 insertion(+)

diff --git a/answers/exercise15.sql b/answers/exercise15.sql
index e69de29..f0ff0df 100644
--- a/answers/exercise15.sql
+++ b/answers/exercise15.sql
@@ -0,0 +1 @@
+SELECT * FROM Students WHERE PostalCode IS NOT NULL;
\ No newline at end of file

From 43e43a8f18b89d8d97c503b6b9b8091c00633615 Mon Sep 17 00:00:00 2001
From: jeanvalentin51 <valentin.j.gheorghe.com>
Date: Tue, 26 Nov 2019 09:41:12 -0500
Subject: [PATCH 17/21] update city

---
 answers/exercise16.sql | 1 +
 1 file changed, 1 insertion(+)

diff --git a/answers/exercise16.sql b/answers/exercise16.sql
index e69de29..8abbc29 100644
--- a/answers/exercise16.sql
+++ b/answers/exercise16.sql
@@ -0,0 +1 @@
+UPDATE Students SET City ='Edinburgh';
\ No newline at end of file

From 58303b039c0d9e5d7a96f33f28dd30bfeaa1ce85 Mon Sep 17 00:00:00 2001
From: jeanvalentin51 <valentin.j.gheorghe.com>
Date: Tue, 26 Nov 2019 09:42:30 -0500
Subject: [PATCH 18/21] update column where

---
 answers/exercise17.sql | 1 +
 1 file changed, 1 insertion(+)

diff --git a/answers/exercise17.sql b/answers/exercise17.sql
index e69de29..475bb10 100644
--- a/answers/exercise17.sql
+++ b/answers/exercise17.sql
@@ -0,0 +1 @@
+UPDATE Students SET City = 'Edinburgh' WHERE Country = 'Scotland';
\ No newline at end of file

From b4cd3deb27482c3bb95a31f05ce38f44ec8d1531 Mon Sep 17 00:00:00 2001
From: jeanvalentin51 <valentin.j.gheorghe.com>
Date: Tue, 26 Nov 2019 09:45:17 -0500
Subject: [PATCH 19/21] update multiple col

---
 answers/exercise18.sql | 1 +
 1 file changed, 1 insertion(+)

diff --git a/answers/exercise18.sql b/answers/exercise18.sql
index e69de29..2524ddc 100644
--- a/answers/exercise18.sql
+++ b/answers/exercise18.sql
@@ -0,0 +1 @@
+UPDATE Students SET City = 'Edinburgh', Country = 'Scotland' WHERE ID = 35;
\ No newline at end of file

From deaa277325942c2f246d223af4d069a04f85f7c5 Mon Sep 17 00:00:00 2001
From: jeanvalentin51 <valentin.j.gheorghe.com>
Date: Tue, 26 Nov 2019 09:49:16 -0500
Subject: [PATCH 20/21] delete where

---
 answers/exercise19.sql | 1 +
 1 file changed, 1 insertion(+)

diff --git a/answers/exercise19.sql b/answers/exercise19.sql
index e69de29..2cdd0fd 100644
--- a/answers/exercise19.sql
+++ b/answers/exercise19.sql
@@ -0,0 +1 @@
+DELETE FROM Students WHERE Country = 'Scotland';
\ No newline at end of file

From 1436ad0b0c88cdd64b975c9cdcb682ac9ab38017 Mon Sep 17 00:00:00 2001
From: jeanvalentin51 <valentin.j.gheorghe.com>
Date: Tue, 26 Nov 2019 09:50:43 -0500
Subject: [PATCH 21/21] delete all

---
 answers/exercise20.sql | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/answers/exercise20.sql b/answers/exercise20.sql
index e69de29..c829a24 100644
--- a/answers/exercise20.sql
+++ b/answers/exercise20.sql
@@ -0,0 +1,3 @@
+DELETE FROM Students;
+
+// more safety net compared to TRUNCATE; identiy keys are not reset
\ No newline at end of file