When considering a link purchase or exchange, check the cache date of the page where your link will be located in Google.

当考虑一个购买或交换的链接时，请检查链接页面在google里的缓存的日期。

youdao

If your table statistics are up to date, you can quickly and inexpensively check the cardinality of the columns in your existing table by issuing the following statement.

如果表的统计信息是最新的，那么就可以通过如下语句快速检查现有表内列的基数。

youdao

Strictly speaking, you don't need to perform this now, as you just installed your repository and it should not be out of date. But it doesn't hurt to check just in case.

严格来说，我们现在并不需要执行这个过程，因为我们刚刚安装了自己的仓库，它应该还没有过期。

youdao