import database

def get_user_data(user_id):
    query = f"SELECT * FROM users WHERE id = {user_id}"
    return database.execute(query)

def get_all_users():
    return database.execute("SELECT * FROM users")

def get_users_by_role(role):
    query = f"SELECT * FROM users WHERE role = '{role}'"
    return database.execute(query)