ZipCodeCore · jorget93 · Mar 30, 2021
diff --git a/.idea/.gitignore b/.idea/.gitignore
diff --git a/.idea/SQL.BuildAndDestroy.iml b/.idea/SQL.BuildAndDestroy.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 @@
+mysql> CREATE DATABASE myNewDB
diff --git a/answers/exercise10.sql b/answers/exercise10.sql
@@ -0,0 +1 @@
+mysql> SELECT * FROM Students WHERE City='Philadelphia' OR City='Trenton';
diff --git a/answers/exercise11.sql b/answers/exercise11.sql
@@ -0,0 +1,9 @@
+mysql> SELECT * FROM Students ORDER BY City ASC;
++-------------+-------------+--------------+----------+------------+
+| StudentName | Address     | City         | Country  | PostalCode |
++-------------+-------------+--------------+----------+------------+
+| Jane Doe    | 57 Union St | Glasgow      | Scotland | G13RB      |
+| John Doe    | 58 Union St | Philadelphia | USA      | 19805      |
+| Joe Doe     | 58 Union St | Trenton      | USA      | 19805      |
+| John John   | 58 Union St | Wilmington   | USA      | 19805      |
++-------------+-------------+--------------+----------+------------+
diff --git a/answers/exercise12.sql b/answers/exercise12.sql
@@ -0,0 +1,9 @@
+mysql> SELECT * FROM Students ORDER BY City DESC;
++-------------+-------------+--------------+----------+------------+
+| StudentName | Address     | City         | Country  | PostalCode |
++-------------+-------------+--------------+----------+------------+
+| John John   | 58 Union St | Wilmington   | USA      | 19805      |
+| Joe Doe     | 58 Union St | Trenton      | USA      | 19805      |
+| John Doe    | 58 Union St | Philadelphia | USA      | 19805      |
+| Jane Doe    | 57 Union St | Glasgow      | Scotland | G13RB      |
++-------------+-------------+--------------+----------+------------+
diff --git a/answers/exercise13.sql b/answers/exercise13.sql
@@ -0,0 +1,11 @@
+mysql> SELECT * FROM Students ORDER BY Country ASC, City ASC;
++-------------+-------------+--------------+----------+------------+
+| StudentName | Address     | City         | Country  | PostalCode |
++-------------+-------------+--------------+----------+------------+
+| Jose Jose   | 58 Union St | ACityName    | Mexico   | 19805      |
+| Jose Jose   | 58 Union St | Wilmington   | Mexico   | 19805      |
+| Jane Doe    | 57 Union St | Glasgow      | Scotland | G13RB      |
+| John Doe    | 58 Union St | Philadelphia | USA      | 19805      |
+| Joe Doe     | 58 Union St | Trenton      | USA      | 19805      |
+| John John   | 58 Union St | Wilmington   | USA      | 19805      |
++-------------+-------------+--------------+----------+------------+
diff --git a/answers/exercise14.sql b/answers/exercise14.sql
@@ -0,0 +1,16 @@
+
+
+/*Should I have created the table without
+  including IS NOT NULL?
+  That way my query would have said
+  'WHERE PostalCode IS NULL;'
+ */
+
+
+mysql> SELECT * FROM Students WHERE PostalCode='';
++---------------+-------------+-----------+---------+------------+
+| StudentName   | Address     | City      | Country | PostalCode |
++---------------+-------------+-----------+---------+------------+
+| Jose Jose     | 58 Union St | ACityName | Mexico  |            |
+| Jose LastName | 58 Union St | ACityName | Mexico  |            |
++---------------+-------------+-----------+---------+------------+
diff --git a/answers/exercise15.sql b/answers/exercise15.sql
@@ -0,0 +1,13 @@
+mysql> SELECT * FROM Students WHERE PostalCode IS NOT NULL;
++---------------+-------------+--------------+----------+------------+
+| StudentName   | Address     | City         | Country  | PostalCode |
++---------------+-------------+--------------+----------+------------+
+| Jane Doe      | 57 Union St | Glasgow      | Scotland | G13RB      |
+| John Doe      | 58 Union St | Philadelphia | USA      | 19805      |
+| Joe Doe       | 58 Union St | Trenton      | USA      | 19805      |
+| John John     | 58 Union St | Wilmington   | USA      | 19805      |
+| Jose Jose     | 58 Union St | Wilmington   | Mexico   | 19805      |
+| Jose Jose     | 58 Union St | ACityName    | Mexico   | 19805      |
+| Jose Jose     | 58 Union St | ACityName    | Mexico   |            |
+| Jose LastName | 58 Union St | ACityName    | Mexico   |            |
++---------------+-------------+--------------+----------+------------+
diff --git a/answers/exercise16.sql b/answers/exercise16.sql
@@ -0,0 +1,15 @@
+/*From The Last Kingdom?*/
+
+mysql> UPDATE Students SET City = 'Edinburgh';
++---------------+-------------+-----------+----------+------------+
+| StudentName   | Address     | City      | Country  | PostalCode |
++---------------+-------------+-----------+----------+------------+
+| Jane Doe      | 57 Union St | Edinburgh | Scotland | G13RB      |
+| John Doe      | 58 Union St | Edinburgh | USA      | 19805      |
+| Joe Doe       | 58 Union St | Edinburgh | USA      | 19805      |
+| John John     | 58 Union St | Edinburgh | USA      | 19805      |
+| Jose Jose     | 58 Union St | Edinburgh | Mexico   | 19805      |
+| Jose Jose     | 58 Union St | Edinburgh | Mexico   | 19805      |
+| Jose Jose     | 58 Union St | Edinburgh | Mexico   |            |
+| Jose LastName | 58 Union St | Edinburgh | Mexico   |            |
++---------------+-------------+-----------+----------+------------+
diff --git a/answers/exercise17.sql b/answers/exercise17.sql
@@ -0,0 +1,13 @@
+mysql> UPDATE Students SET City = 'Edinburgh' WHERE Country = 'Scotland';
++---------------+-------------+-----------+----------+------------+
+| StudentName   | Address     | City      | Country  | PostalCode |
++---------------+-------------+-----------+----------+------------+
+| Jane Doe      | 57 Union St | Edinburgh | Scotland | G13RB      |
+| John Doe      | 58 Union St | CityName  | USA      | 19805      |
+| Joe Doe       | 58 Union St | CityName  | USA      | 19805      |
+| John John     | 58 Union St | CityName  | USA      | 19805      |
+| Jose Jose     | 58 Union St | CityName  | Mexico   | 19805      |
+| Jose Jose     | 58 Union St | CityName  | Mexico   | 19805      |
+| Jose Jose     | 58 Union St | CityName  | Mexico   |            |
+| Jose LastName | 58 Union St | CityName  | Mexico   |            |
++---------------+-------------+-----------+----------+------------+
diff --git a/answers/exercise18.sql b/answers/exercise18.sql
@@ -0,0 +1 @@
+UPDATE Students SET City='EdinBurgh', Country='Scotland' Where ID='35';
diff --git a/answers/exercise19.sql b/answers/exercise19.sql
@@ -0,0 +1 @@
+DELETE FROM Students WHERE Country = 'Scotland';
diff --git a/answers/exercise2.sql b/answers/exercise2.sql
@@ -0,0 +1 @@
+mysql> DROP DATABASE myNewDB;
diff --git a/answers/exercise20.sql b/answers/exercise20.sql
@@ -0,0 +1 @@
+TRUNCATE TABLE Students;
diff --git a/answers/exercise3.sql b/answers/exercise3.sql
@@ -0,0 +1,6 @@
+mysql> CREATE TABLE Users (
+    -> UserID INTEGER KEY NOT NULL AUTO_INCREMENT,
+    -> LastName VARCHAR(255) NOT NULL,
+    -> FirstName VARCHAR(255) NOT NULL,
+    -> Address VARCHAR(255) NOT NULL,
+    -> City VARCHAR(255) NOT NULL);
diff --git a/answers/exercise4.sql b/answers/exercise4.sql
@@ -0,0 +1,3 @@
+DROP TABLE Users;
+
+
diff --git a/answers/exercise5.sql b/answers/exercise5.sql
@@ -0,0 +1 @@
+TRUNCATE TABLE Users;
diff --git a/answers/exercise6.sql b/answers/exercise6.sql
@@ -0,0 +1 @@
+mysql> ALTER TABLE Users ADD COLUMN Birthday DATE;
diff --git a/answers/exercise7.sql b/answers/exercise7.sql
@@ -0,0 +1 @@
+ALTER TABLE Users DROP COLUMN Birthday;
diff --git a/answers/exercise8.sql b/answers/exercise8.sql
@@ -0,0 +1 @@
+mysql> INSERT INTO Students (StudentName,Address,City,Country,PostalCode) VALUES ('Jane Doe','57 Union St','Glasgow','Scotland','G13RB');
diff --git a/answers/exercise9.sql b/answers/exercise9.sql
@@ -0,0 +1 @@
+mysql> SELECT * FROM Students WHERE City<>'Philadelphia';
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1 @@
		mysql> SELECT * FROM Students WHERE City='Philadelphia' OR City='Trenton';
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1 @@
		UPDATE Students SET City='EdinBurgh', Country='Scotland' Where ID='35';
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1 @@
		DELETE FROM Students WHERE Country = 'Scotland';
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1 @@
		mysql> ALTER TABLE Users ADD COLUMN Birthday DATE;
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1 @@
		mysql> INSERT INTO Students (StudentName,Address,City,Country,PostalCode) VALUES ('Jane Doe','57 Union St','Glasgow','Scotland','G13RB');