feat: final ?
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@ -18,7 +18,7 @@ public class DonorsGenerator {
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"Hiking", "Skiing", "Swimming", "Bird watching", "Racing", "Walking", "Gaming",
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};
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private final Random RANDOM;
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private static Random RANDOM;
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private static Connection conn;
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@ -27,7 +27,7 @@ public class DonorsGenerator {
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public DonorsGenerator(int recordCount, Connection conn, Random random) {
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DonorsGenerator.conn = conn;
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count = recordCount;
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RANDOM = random;
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DonorsGenerator.RANDOM = random;
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}
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public void insertDonors() throws SQLException {
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@ -8,7 +8,7 @@ import java.util.Random;
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public class Main {
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// change the DB_URL accordingly
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static final String HOST = "localhost";
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static final String PORT = "32772";
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static final String PORT = "32768";
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static final String DATABASE_NAME = "assignment1";
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static final String DB_URL = "jdbc:mysql://" + HOST + ":" + PORT + "/" + DATABASE_NAME;
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176
src/main/sql/answers.sql
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176
src/main/sql/answers.sql
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@ -0,0 +1,176 @@
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-- Question 1 part 1 a)
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CREATE TABLE Donors
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(
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donorID INT NOT NULL,
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firstName VARCHAR(50) NOT NULL,
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lastName VARCHAR(50) NOT NULL,
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middleInitial CHAR(1),
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dateOfBirth DATE,
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address VARCHAR(100), -- might need to change to civic code only
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city VARCHAR(50),
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postalCode VARCHAR(7),
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province ENUM (
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'AB', -- Alberta
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'BC', -- British Columbia
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'MB', -- Manitoba
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'NB', -- New Brunswick
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'NL', -- Newfoundland and Labrador
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'NS', -- Nova Scotia
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'NT', -- Northwest Territories
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'NU', -- Nunavut
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'ON', -- Ontario
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'PE', -- Prince Edward Island
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'QC', -- Quebec
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'SK', -- Saskatchewan
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'YT' -- Yukon
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),
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gender ENUM ('M', 'F', 'U'),
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SSN VARCHAR(11),
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hobby VARCHAR(100),
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phone VARCHAR(15),
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email VARCHAR(100),
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CONSTRAINT donors_pk PRIMARY KEY (donorID)
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);
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CREATE TABLE Donations
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(
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dID INT NOT NULL,
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donorID INT NOT NULL,
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date DATE NOT NULL,
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type VARCHAR(7) NOT NULL,
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amount DECIMAL(10, 2) NOT NULL,
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CONSTRAINT donations_pk PRIMARY KEY (dID),
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CONSTRAINT donations_donorID_fk FOREIGN KEY (donorID) REFERENCES Donors (donorID),
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CONSTRAINT valid_donation_type CHECK (type IN ('money', 'product'))
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);
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create table Products
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(
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pID INT NOT NULL,
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description varchar(100),
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date DATE NOT NULL,
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price DECIMAL(10, 2) NOT NULL,
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weight DECIMAL(5, 2) NOT NULL,
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CONSTRAINT products_pk PRIMARY KEY (pID)
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);
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CREATE TABLE Sales
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(
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sID INT NOT NULL,
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date DATE NOT NULL,
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amount DECIMAL(10, 2) NOT NULL,
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totalWeight DECIMAL(10, 2) NOT NULL,
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deliveryFee DECIMAL(10, 2) DEFAULT 0 NOT NULL,
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CONSTRAINT sales_pk primary key (sID),
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CONSTRAINT valid_delivery_fee CHECK (deliveryFee >= 0)
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);
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CREATE TABLE SalesItems
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(
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sID INT NOT NULL,
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pID INT NOT NULL,
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PRIMARY KEY (sID, pID),
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FOREIGN KEY (sID) REFERENCES Sales (sID),
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FOREIGN KEY (pID) REFERENCES Products (pID)
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);
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-- Question 1 part 1 b)
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ALTER TABLE Donors
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DROP COLUMN hobby;
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-- Question 1 part 1 c)
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ALTER TABLE Products
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ADD location VARCHAR(50) DEFAULT 'Unknown';
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ALTER TABLE Products
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ADD color VARCHAR(10) DEFAULT 'Unknown';
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-- Question 1 part 1 d)
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-- !!! ASSUME THAT HOBBY COLUMN IS NO LONGER THERE
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INSERT INTO Donors (donorID, firstName, lastName, middleInitial, dateOfBirth, address, city, postalCode, province,
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gender, SSN, phone, email)
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VALUES (1, 'John', 'Smith', 'A', '1985-03-15', '123 Maple St', 'Toronto', 'M5V 2T6', 'ON', 'M', '123-456-789',
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'(416) 555-1234', 'john.smith@email.com');
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INSERT INTO Donors (donorID, firstName, lastName, middleInitial, dateOfBirth, address, city, postalCode, province,
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gender, SSN, phone, email)
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VALUES (2, 'Emily', 'Johnson', 'M', '1990-07-22', '456 Oak Ave', 'Vancouver', 'V6B 3K9', 'BC', 'F', '987-654-321',
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'(604) 555-5678', 'emily.j@email.com');
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INSERT INTO Donors (donorID, firstName, lastName, middleInitial, dateOfBirth, address, city, postalCode, province,
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gender, SSN, phone, email)
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VALUES (3, 'Alex', 'Lee', NULL, '1988-11-30', '789 Pine Rd', 'Montreal', 'H3A 1A1', 'QC', 'U', '456-789-123',
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'(514) 555-9012', 'alex.lee@email.com');
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INSERT INTO Donations (dID, donorID, date, type, amount)
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VALUES (1, 1, '2023-05-15', 'money', 100.00);
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INSERT INTO Donations (dID, donorID, date, type, amount)
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VALUES (2, 2, '2023-06-22', 'product', 75.50);
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INSERT INTO Donations (dID, donorID, date, type, amount)
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VALUES (3, 3, '2023-07-03', 'money', 250.00);
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-- Question 1 part 1 e)
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DELETE
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FROM Donors
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WHERE donorID > 0;
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DELETE
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FROM Donations
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WHERE donorID > 0;
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-- Question 1 part 1 f)
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-- We have not covered ON DELETE/ ON UPDATE CASCADE
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-- in class so wer have to delete in such order of statements
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DROP TABLE Donations;
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DROP TABLE Donors;
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DROP TABLE SalesItems;
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DROP TABLE Products;
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DROP TABLE Sales;
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-- Question 1 part 2 a)
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SELECT Donors.donorID,
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Donors.firstName,
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Donors.lastName,
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Donors.middleInitial,
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Donors.dateOfBirth,
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Donors.phone,
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Donors.email,
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Donors.SSN
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FROM Donors
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WHERE (Donors.gender = 'M')
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AND (Donors.city = 'Montreal' OR Donors.city = 'Laval');
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-- Question 1 part 2 b)
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SELECT Sales.sID, Products.pID, Products.description, Products.price, Products.weight
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FROM Sales,
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Products
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WHERE Products.color = 'red'
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AND Sales.date = '2024-02-14';
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-- Question 1 part 2 c)
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-- One sID can have multiple products
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-- We need the DISTINCT keyword
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SELECT COUNT(DISTINCT sID)
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FROM Sales
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WHERE Sales.date = '2024-02-14';
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-- Question 1 part 2 d)
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SELECT EXTRACT(MONTH FROM date) AS month,
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COUNT(DISTINCT sID) AS total_sales,
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SUM(amount) AS total_amount,
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SUM(deliveryFee) AS total_delivery_fees
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FROM Sales
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WHERE EXTRACT(YEAR FROM date) = 2023
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GROUP BY EXTRACT(MONTH FROM date)
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ORDER BY month;
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-- Question 1 part 2 e)
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SELECT Donors.gender, Donors.lastName, Donors.firstName, SUM(Donations.amount) AS total_donation_amount
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FROM Donors,
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Donations
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WHERE Donors.city = 'Brossard'
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AND (Donations.date > '2022-01-01')
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AND (Donations.date < '2023-12-31')
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GROUP BY Donors.donorID, Donors.gender, Donors.lastName, Donors.firstName
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ORDER BY Donors.gender, Donors.lastName, Donors.firstName;
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