最后本文还以union SELECT语句为例，详细介绍了利用该语句在盲注条件下统计数据表的列数和判断列的数据类型的方法和步骤。
At last, an injection of UNION SELECT statements is described in detail, including how to count the columns and how to identify columns types.
优化器的操作基于数据表中的行数、数据表或索引使用的空间以及其他信息的相关统计数据。
The optimizer ACTS based on statistical data about the number of rows in a table, the use of space by a table or index, and other information.
您可能会认为我们根本没必要采用电子数据表这一中间步骤，而是直接从棒球网站上获得gadget代码中的统计数据。
You could argue that we should obtain the stats within the gadget code directly from a baseball Web site without going through the intermediate step of using a spreadsheet.
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