例如，您可能正在一行一行地处理数据，您可以知道一共有多少行以及您已经处理多少行的情况。

For example, you could be processing a database row by row, and you know how many rows there are and how many have already been processed.

youdao

例如，您可能正在一行一行地处理数据，您可以知道一共有多少行以及您已经处理多少行的情况。

For example, you could be processing a database row by row, and you know how many rows there are and how many have already been processed.

youdao