input: Write a python function to query all employees with a salary less than 10000 from an SQLite database and return the results.
  assert query_employees_with_low_salary("employee_table.db") == [(1, 'John Doe', 9500), (2, 'Jane Smith', 9900)]
  assert query_employees_with_low_salary("employee_table.db") == [(3, 'Alice Johnson', 8000)]
  assert query_employees_with_low_salary("employee_table.db") == []
output: def query_employees_with_low_salary(db_name):
      import sqlite3
  
      conn = sqlite3.connect(db_name)
      cursor = conn.cursor()
      cursor.execute("SELECT * FROM employees WHERE salary < 10000")
      results = cursor.fetchall()
      conn.close()
  
      return results