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Merge pull request #46 from ewdlop/ewdlop-patch-23
Create company.tsql
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‎T-Sql/company.tsql‎

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-- Create tables
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CREATE TABLE DEPARTMENT (
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deptId int PRIMARY KEY,
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deptName varchar(20),
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location varchar(30),
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managerId int
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);
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-- Modify EMPLOYEE table to add more fields and constraints
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CREATE TABLE EMPLOYEE (
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empId int PRIMARY KEY,
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name varchar(50),
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dept varchar(20),
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email varchar(50),
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phone varchar(15),
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hireDate date,
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jobTitle varchar(30),
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deptId int,
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managerId int,
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FOREIGN KEY (deptId) REFERENCES DEPARTMENT(deptId)
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);
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-- Add SALARY table to track compensation
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CREATE TABLE SALARY (
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salaryId int PRIMARY KEY,
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empId int,
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amount decimal(10,2),
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effectiveDate date,
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FOREIGN KEY (empId) REFERENCES EMPLOYEE(empId)
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);
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-- Add PROJECT table
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CREATE TABLE PROJECT (
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projectId int PRIMARY KEY,
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projectName varchar(50),
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startDate date,
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endDate date,
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budget decimal(15,2),
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deptId int,
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status varchar(15),
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FOREIGN KEY (deptId) REFERENCES DEPARTMENT(deptId)
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);
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-- Create junction table for employees working on projects
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CREATE TABLE PROJECT_ASSIGNMENT (
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assignmentId int PRIMARY KEY,
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empId int,
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projectId int,
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roleOnProject varchar(30),
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hoursAllocated decimal(5,2),
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FOREIGN KEY (empId) REFERENCES EMPLOYEE(empId),
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FOREIGN KEY (projectId) REFERENCES PROJECT(projectId)
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);
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-- Add ATTENDANCE table
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CREATE TABLE ATTENDANCE (
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attendanceId int PRIMARY KEY,
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empId int,
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workDate date,
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timeIn datetime,
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timeOut datetime,
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FOREIGN KEY (empId) REFERENCES EMPLOYEE(empId)
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);
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-- Add PERFORMANCE_REVIEW table
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CREATE TABLE PERFORMANCE_REVIEW (
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reviewId int PRIMARY KEY,
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empId int,
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reviewDate date,
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rating decimal(3,2),
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reviewerEmpId int,
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comments varchar(500),
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FOREIGN KEY (empId) REFERENCES EMPLOYEE(empId),
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FOREIGN KEY (reviewerEmpId) REFERENCES EMPLOYEE(empId)
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);
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-- Insert data for DEPARTMENT
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INSERT INTO DEPARTMENT(deptId, deptName, location, managerId) VALUES (101, 'Sales', 'Building A, Floor 3', 1);
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INSERT INTO DEPARTMENT(deptId, deptName, location, managerId) VALUES (102, 'Accounting', 'Building B, Floor 2', 2);
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INSERT INTO DEPARTMENT(deptId, deptName, location, managerId) VALUES (103, 'Marketing', 'Building A, Floor 4', 4);
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INSERT INTO DEPARTMENT(deptId, deptName, location, managerId) VALUES (104, 'IT', 'Building C, Floor 1', NULL);
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INSERT INTO DEPARTMENT(deptId, deptName, location, managerId) VALUES (105, 'HR', 'Building B, Floor 1', NULL);
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-- Insert more employees
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INSERT INTO EMPLOYEE(empId, name, dept, email, phone, hireDate, jobTitle, deptId, managerId)
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VALUES (1, 'Clark Kent', 'Sales', 'clark.kent@company.com', '555-1234', '2019-03-15', 'Sales Manager', 101, NULL);
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INSERT INTO EMPLOYEE(empId, name, dept, email, phone, hireDate, jobTitle, deptId, managerId)
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VALUES (2, 'Dave Johnson', 'Accounting', 'dave.johnson@company.com', '555-2345', '2018-05-22', 'Accounting Manager', 102, NULL);
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INSERT INTO EMPLOYEE(empId, name, dept, email, phone, hireDate, jobTitle, deptId, managerId)
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VALUES (3, 'Ava Wilson', 'Sales', 'ava.wilson@company.com', '555-3456', '2020-01-10', 'Sales Representative', 101, 1);
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INSERT INTO EMPLOYEE(empId, name, dept, email, phone, hireDate, jobTitle, deptId, managerId)
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VALUES (4, 'Tom Smith', 'Marketing', 'tom.smith@company.com', '555-4567', '2019-11-05', 'Marketing Manager', 103, NULL);
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INSERT INTO EMPLOYEE(empId, name, dept, email, phone, hireDate, jobTitle, deptId, managerId)
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VALUES (5, 'Sarah Lee', 'IT', 'sarah.lee@company.com', '555-5678', '2021-02-15', 'Software Developer', 104, NULL);
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INSERT INTO EMPLOYEE(empId, name, dept, email, phone, hireDate, jobTitle, deptId, managerId)
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VALUES (6, 'Mike Brown', 'Sales', 'mike.brown@company.com', '555-6789', '2020-08-01', 'Sales Representative', 101, 1);
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INSERT INTO EMPLOYEE(empId, name, dept, email, phone, hireDate, jobTitle, deptId, managerId)
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VALUES (7, 'Emily Davis', 'HR', 'emily.davis@company.com', '555-7890', '2019-06-12', 'HR Manager', 105, NULL);
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-- Insert salary records
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INSERT INTO SALARY(salaryId, empId, amount, effectiveDate) VALUES (1001, 1, 85000.00, '2023-01-01');
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INSERT INTO SALARY(salaryId, empId, amount, effectiveDate) VALUES (1002, 2, 82000.00, '2023-01-01');
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INSERT INTO SALARY(salaryId, empId, amount, effectiveDate) VALUES (1003, 3, 65000.00, '2023-01-01');
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INSERT INTO SALARY(salaryId, empId, amount, effectiveDate) VALUES (1004, 4, 78000.00, '2023-01-01');
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INSERT INTO SALARY(salaryId, empId, amount, effectiveDate) VALUES (1005, 5, 92000.00, '2023-01-01');
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INSERT INTO SALARY(salaryId, empId, amount, effectiveDate) VALUES (1006, 6, 67000.00, '2023-01-01');
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INSERT INTO SALARY(salaryId, empId, amount, effectiveDate) VALUES (1007, 7, 75000.00, '2023-01-01');
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-- Insert projects
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INSERT INTO PROJECT(projectId, projectName, startDate, endDate, budget, deptId, status)
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VALUES (201, 'Q2 Sales Campaign', '2023-04-01', '2023-06-30', 50000.00, 101, 'Completed');
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INSERT INTO PROJECT(projectId, projectName, startDate, endDate, budget, deptId, status)
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VALUES (202, 'Financial Year End', '2023-12-01', '2024-01-31', 25000.00, 102, 'In Progress');
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INSERT INTO PROJECT(projectId, projectName, startDate, endDate, budget, deptId, status)
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VALUES (203, 'Website Redesign', '2023-07-15', '2023-10-15', 75000.00, 103, 'Completed');
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INSERT INTO PROJECT(projectId, projectName, startDate, endDate, budget, deptId, status)
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VALUES (204, 'CRM Implementation', '2023-09-01', '2024-03-31', 120000.00, 104, 'In Progress');
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INSERT INTO PROJECT(projectId, projectName, startDate, endDate, budget, deptId, status)
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VALUES (205, 'Employee Engagement', '2024-01-01', '2024-12-31', 30000.00, 105, 'In Progress');
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-- Assign employees to projects
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INSERT INTO PROJECT_ASSIGNMENT(assignmentId, empId, projectId, roleOnProject, hoursAllocated)
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VALUES (301, 1, 201, 'Project Lead', 20.00);
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INSERT INTO PROJECT_ASSIGNMENT(assignmentId, empId, projectId, roleOnProject, hoursAllocated)
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VALUES (302, 3, 201, 'Team Member', 40.00);
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INSERT INTO PROJECT_ASSIGNMENT(assignmentId, empId, projectId, roleOnProject, hoursAllocated)
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VALUES (303, 6, 201, 'Team Member', 40.00);
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INSERT INTO PROJECT_ASSIGNMENT(assignmentId, empId, projectId, roleOnProject, hoursAllocated)
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VALUES (304, 2, 202, 'Project Lead', 30.00);
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INSERT INTO PROJECT_ASSIGNMENT(assignmentId, empId, projectId, roleOnProject, hoursAllocated)
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VALUES (305, 4, 203, 'Project Lead', 25.00);
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INSERT INTO PROJECT_ASSIGNMENT(assignmentId, empId, projectId, roleOnProject, hoursAllocated)
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VALUES (306, 5, 204, 'Technical Lead', 35.00);
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INSERT INTO PROJECT_ASSIGNMENT(assignmentId, empId, projectId, roleOnProject, hoursAllocated)
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VALUES (307, 7, 205, 'Project Lead', 15.00);
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-- Add some attendance records
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INSERT INTO ATTENDANCE(attendanceId, empId, workDate, timeIn, timeOut)
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VALUES (401, 1, '2024-05-09', '2024-05-09 08:55:00', '2024-05-09 17:05:00');
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INSERT INTO ATTENDANCE(attendanceId, empId, workDate, timeIn, timeOut)
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VALUES (402, 2, '2024-05-09', '2024-05-09 09:02:00', '2024-05-09 17:30:00');
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INSERT INTO ATTENDANCE(attendanceId, empId, workDate, timeIn, timeOut)
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VALUES (403, 3, '2024-05-09', '2024-05-09 08:45:00', '2024-05-09 16:50:00');
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-- Add performance reviews
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INSERT INTO PERFORMANCE_REVIEW(reviewId, empId, reviewDate, rating, reviewerEmpId, comments)
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VALUES (501, 3, '2023-12-15', 4.5, 1, 'Excellent performance in sales targets. Great team player.');
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INSERT INTO PERFORMANCE_REVIEW(reviewId, empId, reviewDate, rating, reviewerEmpId, comments)
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VALUES (502, 6, '2023-12-16', 4.2, 1, 'Consistently meets targets. Could improve on documentation.');
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-- Sample queries
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-- Find all employees in Sales department
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SELECT * FROM EMPLOYEE WHERE dept = 'Sales';
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-- Find average salary by department
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SELECT d.deptName, AVG(s.amount) as avgSalary
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FROM EMPLOYEE e
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JOIN DEPARTMENT d ON e.deptId = d.deptId
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JOIN SALARY s ON e.empId = s.empId
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GROUP BY d.deptName;
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-- Find all projects with assigned employees
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SELECT p.projectName, COUNT(pa.empId) as numEmployees
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FROM PROJECT p
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JOIN PROJECT_ASSIGNMENT pa ON p.projectId = pa.projectId
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GROUP BY p.projectName;
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-- Get employee attendance summary for current month
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SELECT e.name, COUNT(a.attendanceId) as daysPresent
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FROM EMPLOYEE e
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LEFT JOIN ATTENDANCE a ON e.empId = a.empId
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WHERE MONTH(a.workDate) = MONTH(GETDATE()) AND YEAR(a.workDate) = YEAR(GETDATE())
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GROUP BY e.name;

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