inventory/backend/database/work_hours_schema.sql

-- Work Hours database schema
-- For tracking time spent on tasks

CREATE TABLE IF NOT EXISTS work_hours (
    id INT AUTO_INCREMENT PRIMARY KEY,
    task_id INT NOT NULL,
    user_id INT NOT NULL,
    date DATE NOT NULL,
    hours DECIMAL(5,2) NOT NULL,
    description TEXT NULL,
    rate DECIMAL(10,2) NULL,
    total_amount DECIMAL(10,2) NULL,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    
    INDEX idx_task_id (task_id),
    INDEX idx_user_id (user_id),
    INDEX idx_date (date),
    INDEX idx_created_at (created_at),
    FOREIGN KEY (task_id) REFERENCES tasks(id) ON DELETE CASCADE,
    FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
);