The first line in each result is the page title.
每个结果的第一行是网页标题。
Since these are scalars functions, for each line of the result set, a result of the XML data type is created.
因为这都是些标量函数，所以将为结果集的每一行创建XML数据类型的结果。
You tend to assume that each line of code in the method must be operating properly in order for the method to produce the expected result, given a certain input.
您可能认为，针对特定输入，只有方法中的每一行都操作正确，方法才会生成预期结果。
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