Calculating Percentages

Problem

The compensation committee is concerned that a few executives consume the entire payroll budget. Calculate what percentage of the total company payroll each employee's salary represents. Return first_name and pct (salary / total sum * 100).

Database Schema

Table: employees

• employee_id (INT): Unique identifier for the employee.
• first_name (VARCHAR): First name of the employee.
• last_name (VARCHAR): Last name of the employee.
• salary (INT): Employee's salary.
• department_id (INT): Foreign key referencing the department.
• manager_id (INT): Foreign key referencing the manager (another employee).
• hire_date (DATE): Date the employee was hired.

Table: departments

• department_id (INT): Unique identifier for the department.
• department_name (VARCHAR): Name of the department.

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Hint

Solution