text: -- name: select_users_older_than
  SELECT * FROM users
  WHERE age > ?
  
  -- name: select_users_younger_than
  -- params:
  --   age: Int32
  SELECT * FROM users
  WHERE age < ?
  
  -- name: select_users_aged_between
  -- params:
  --   lb: Int32
  --   ub: String
  SELECT * FROM users
  WHERE age > ? AND age < ?
  