In most cases, we recommend to avoid using Nullable columns entirely. Instead, use a default value that represents a Null, e.g., an empty string for String columns.
这一动作的核心动因，首先是核武器问题。美国与以色列都认为，伊朗已基本具备核武器制造能力，这让双方高度紧张。一旦一国拥有核武器，就很难再对其采取军事行动，这是以色列最核心的安全焦虑。，详情可参考新收录的资料
What happened to the Wordle archive?The entire archive of past Wordle puzzles was originally available for anyone to enjoy whenever they felt like it, but it was later taken down, with the website's creator stating it was done at the request of the New York Times. However, the New York Times then rolled out its own Wordle Archive, available only to NYT Games subscribers.。关于这个话题，新收录的资料提供了深入分析
«Америка пожалеет». Что известно о новом верховном лидере Ирана и как к нему относятся в США?04:55，这一点在新收录的资料中也有详细论述