ZipCodeCore · jeanvalentin51 · Nov 26, 2019 · Nov 26, 2019 · Nov 26, 2019 · Nov 26, 2019
diff --git a/.idea/.gitignore b/.idea/.gitignore
diff --git a/.idea/SQL.BuildAndDestroy.iml b/.idea/SQL.BuildAndDestroy.iml
diff --git a/.idea/inspectionProfiles/Project_Default.xml b/.idea/inspectionProfiles/Project_Default.xml
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 @@
+CREATE DATABASE myNewDB;
diff --git a/answers/exercise10.sql b/answers/exercise10.sql
@@ -0,0 +1 @@
+SELECT * FROM Students WHERE City IN ('Philadelphia', 'Trenton')
diff --git a/answers/exercise11.sql b/answers/exercise11.sql
@@ -0,0 +1 @@
+SELECT * FROM Students ORDER BY City;
diff --git a/answers/exercise12.sql b/answers/exercise12.sql
@@ -0,0 +1 @@
+SELECT * FROM Students ORDER BY City DESC;
diff --git a/answers/exercise13.sql b/answers/exercise13.sql
@@ -0,0 +1 @@
+SELECT * FROM Students ORDER BY Country, City;
diff --git a/answers/exercise14.sql b/answers/exercise14.sql
@@ -0,0 +1 @@
+SELECT * FROM Students WHERE PostalCode IS NULL;
diff --git a/answers/exercise15.sql b/answers/exercise15.sql
@@ -0,0 +1 @@
+SELECT * FROM Students WHERE PostalCode IS NOT NULL;
diff --git a/answers/exercise16.sql b/answers/exercise16.sql
@@ -0,0 +1 @@
+UPDATE Students SET City ='Edinburgh';
diff --git a/answers/exercise17.sql b/answers/exercise17.sql
@@ -0,0 +1 @@
+UPDATE Students SET City = 'Edinburgh' WHERE Country = 'Scotland';
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 @@
+DROP DATABASE myNewDB;
diff --git 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
diff --git 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)
+};
diff --git a/answers/exercise4.sql b/answers/exercise4.sql
@@ -0,0 +1 @@
+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 @@
+ALTER TABLE Users ADD 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 +1,3 @@
+INSERT INTO Students
+(StudentName, Address, City, PostalCode, Country)
+VALUES ("Jane Doe", "57 Union St", "Glasgow", "G13RB", "Scotland");
diff --git a/answers/exercise9.sql b/answers/exercise9.sql
@@ -0,0 +1 @@
+SELECT * FROM Students WHERE NOT City = 'Philadelphia';
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1 @@
		SELECT * FROM Students WHERE City IN ('Philadelphia', 'Trenton')
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1 @@
		SELECT * FROM Students WHERE PostalCode IS NULL;
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1 @@
		UPDATE Students SET City = 'Edinburgh' WHERE Country = 'Scotland';
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 +1,3 @@
		DELETE FROM Students;

		// more safety net compared to TRUNCATE; identiy keys are not reset
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1 @@
		SELECT * FROM Students WHERE NOT City = 'Philadelphia';