SQL Queries.txt

CREATE DATABASE hng_hire;
USE hng_hire;

-- Dimension Tables
CREATE TABLE candidates (
    candidate_id INT AUTO_INCREMENT PRIMARY KEY,
    full_name VARCHAR(255),
    email VARCHAR(255),
    phone_number VARCHAR(20),
    github_profile VARCHAR(255),
    linkedin_profile VARCHAR(255),
    experience_level VARCHAR(50)
);

CREATE TABLE employers (
    employer_id INT AUTO_INCREMENT PRIMARY KEY,
    company_name VARCHAR(255),
    industry VARCHAR(100),
    location VARCHAR(255)
);

CREATE TABLE job_roles (
    job_role_id INT AUTO_INCREMENT PRIMARY KEY,
    job_title VARCHAR(255),
    description TEXT
);

CREATE TABLE stack (
    stack_id INT AUTO_INCREMENT PRIMARY KEY,
    stack_name VARCHAR(255)
);

CREATE TABLE status (
    status_id INT AUTO_INCREMENT PRIMARY KEY,
    status_name VARCHAR(50)
);

CREATE TABLE location (
location_id INT AUTO_INCREMENT PRIMARY KEY,
country VARCHAR(255),
city VARCHAR(255)
);

CREATE TABLE date (
    date_id INT AUTO_INCREMENT PRIMARY KEY,
    full_date DATE,
    Year INT,               -- Year as a numeric value
    Month TINYINT,          -- Month as a numeric value (1-12)
    Day TINYINT,            -- Day as a numeric value (1-31)
    Quarter TINYINT,        -- Quarter as a numeric value (1-4)
    is_weekend BOOLEAN,     -- Boolean to indicate if the date is a weekend (1 for true, 0 for false)
    interview_date DATE,    -- Interview date stored as a DATE type
    hiring_date DATE        -- Hiring date stored as a DATE type
);

-- Fact Table
CREATE TABLE hiring (
    hiring_id INT AUTO_INCREMENT PRIMARY KEY,
    candidate_id INT,
    employer_id INT,
    job_role_id INT,
    stack_id INT,
    status_id INT,
    date_id INT,
    location_id INT,
    interview_score FLOAT,
    Years_of_experience INT,
    FOREIGN KEY (candidate_id) REFERENCES candidates(candidate_id),
    FOREIGN KEY (employer_id) REFERENCES employers(employer_id),
    FOREIGN KEY (job_role_id) REFERENCES job_roles(job_role_id),
    FOREIGN KEY (stack_id) REFERENCES stack(stack_id),
    FOREIGN KEY (status_id) REFERENCES status(status_id),
	FOREIGN KEY (date_id) REFERENCES date(date_id),
	FOREIGN KEY (location_id) REFERENCES location(location_id)
);


--- Find out the set import folder 
SHOW VARIABLES LIKE "secure_file_priv";

LOAD DATA INFILE 'C:/ProgramData/MySQL/MySQL Server 8.0/Uploads/candidates.csv'
INTO TABLE candidates
FIELDS TERMINATED BY ','
ENCLOSED BY '"'
LINES TERMINATED BY '\n'
IGNORE 1 LINES
(full_name, email, phone_number, github_profile, linkedin_profile, experience_level);

LOAD DATA INFILE 'C:/ProgramData/MySQL/MySQL Server 8.0/Uploads/employers.csv'
INTO TABLE employers
FIELDS TERMINATED BY ','
ENCLOSED BY '"'
LINES TERMINATED BY '\n'
IGNORE 1 LINES
(company_name, industry, location);

LOAD DATA INFILE 'C:/ProgramData/MySQL/MySQL Server 8.0/Uploads/job_roles.csv'
INTO TABLE job_roles
FIELDS TERMINATED BY ','
ENCLOSED BY '"'
LINES TERMINATED BY '\n'
IGNORE 1 LINES
(job_title, description);

LOAD DATA INFILE 'C:/ProgramData/MySQL/MySQL Server 8.0/Uploads/stack.csv'
INTO TABLE stack
FIELDS TERMINATED BY ','
ENCLOSED BY '"'
LINES TERMINATED BY '\n'
IGNORE 1 LINES
(stack_name);

LOAD DATA INFILE 'C:/ProgramData/MySQL/MySQL Server 8.0/Uploads/status.csv'
INTO TABLE status
FIELDS TERMINATED BY ','
ENCLOSED BY '"'
LINES TERMINATED BY '\n'
IGNORE 1 LINES
(status_name);

LOAD DATA INFILE 'C:/ProgramData/MySQL/MySQL Server 8.0/Uploads/location.csv'
INTO TABLE location
FIELDS TERMINATED BY ','
ENCLOSED BY '"'
LINES TERMINATED BY '\n'
IGNORE 1 LINES
(country, city);

LOAD DATA INFILE 'C:/ProgramData/MySQL/MySQL Server 8.0/Uploads/date.csv'
INTO TABLE date
FIELDS TERMINATED BY ','
ENCLOSED BY '"'
LINES TERMINATED BY '\n'
IGNORE 1 LINES
(full_date, Year, Month, Day, Quarter, is_weekend, interview_date, hiring_date);


LOAD DATA INFILE 'C:/ProgramData/MySQL/MySQL Server 8.0/Uploads/hiring.csv'
INTO TABLE hiring
FIELDS TERMINATED BY ','
ENCLOSED BY '"'
LINES TERMINATED BY '\n'
IGNORE 1 LINES
(candidate_id, employer_id, job_role_id, stack_id, status_id, date_id, location_id, interview_score, Years_of_experience);


select * from candidates;
select * from date;
select * from employers;
select * from hiring;
select * from job_roles;
select * from location;
select * from stack;
select * from status;