return to simple的意思|示意

Listing 6 creates a scalar function that extracts a given XML element from an input document and shows how this function can be invoked in a simple SQL query to return the name of a given customer.

清单6创建一个标量函数，它从输入文档中提取出一个特定的xml元素。然后，在一个简单的SQL查询中调用此函数，从而返回给定的客户的姓名。

To put the model in simple economic terms, its search results give away, say, $1 in value, and in return (thanks to the user’s clicks) it gets 1 cent back.

换用简单的经济学表达来说，其搜索结果产生出1美元的价值，而其收益（感谢用户的单击）却只是1美分。

Although this procedure is quite simple, it helps you understand how to generate SQL-based procedures that query and return XML data using built-in wizards.

尽管该过程非常简单，但是也能帮助您理解如何使用内置向导生成基于SQL的过程来查询并返回XML数据。

By adding a simple function to display a message and exit with the appropriate return code as well as moving everything into a for loop, the script looks cleaner and is easier to understand.

这个脚本增加了一个简单的函数来显示一个消息并带适当的返回码退出，还把所有操作转移到一个for循环中，这使这个脚本看起来更干净、更容易理解了。

Now that you've built the custom web service that can handle and return XML payloads, look at a simple code example of how to do this in Listing 9.

现在您已经构建了可以处理和返回xml有效负载的自定义web服务，接下来在清单9中看一下如何实现这一点的一个简单代码示例。

To simplify this example, we'll just add a new class whose methods return some simple data.

为了简化这个示例，我们添加了一个新类，它的方法返回一些简单数据。