When there is no information for a page or query yet, a helpful message telling the user how to start could go in that empty space.
当一个页面没有信息时或是有疑问时，在界面上空的地方放置一句有帮助的信息提示来告诉用户怎么开始将是有益的。
In addition, it depends on a proper choice of how to group containers to ensure that containers belonging to the same group also appear together in query predicates.
此外，它通过正确选择将容器进行分组的方法，确保属于同一个组的容器也会在查询谓语中一起出现。
Several query string examples are shown below to demonstrate how these attributes are employed in a text search.
下面显示了几个查询字符串示例，演示了如何在文本搜索中使用这些属性。
The article starts out with a motivating example to show how MQTs can help query performance in the Understanding MQTs section.
本文首先在理解MQT一节给出一个启发性例子，展示 MQT如何可以改善查询性能。
So far, in brief discussions of how one might use and query the Issue Tracker RDF metadata, we used a simple and primitive query API.
到现在为止，在对人们可能怎样使用和查询问题跟踪器RDF元数据的简短讨论中，我们使用了简单而基本的查询 API。
How can one run a query across all of the logs on all of the servers in a data center?
怎样跨越数据中心所有服务器上的所有日志来运行一个查询？
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。
The article then briefly explains how a decision is made to use an MQT in a query and the benefits of using MQTs in a federated environment.
然后简要解释了如何作出在查询中使用MQT的决策和在联邦环境中使用MQT的优势。
In this article, we describe how we applied this DITA process model for learning to a case study course using content from an existing course on the IBM DB2 Query Monitor.
本文中，我们描述如何将这种学习DITA过程模型应用于一个示范课程，我们使用了现有的IBMDB 2QueryMonitor课程。
You may be curious how to include a query that restricts XML data in an application.
您可能很想知道如何在应用程序中包括限制XML数据的查询。
Learn how to leverage XML indexing and query filtering capabilities in a database management system to ensure strong runtime performance.
学习如何利用数据库管理系统中的xml索引和查询过滤功能来确保强健的运行时性能。
Listing 9 shows how to transform a user-provided query in order to add the conversion step.
清单9显示了如何转换一个用户提供的查询，以加入转换步骤。
Given how difficult this proved to be, the team then began to wonder if there was a way at run time to query which JAR contains the classes in question.
这样一来就太困难了，团队于是考虑在运行时是否存在一种方式可以及时对JAR文件所包含的出现问题的类进行查询。
Speed is sometimes about pure performance, as in how quickly a system answers a query, but more important is the broad notion of "speed to insigt.
速度有时就是形容一个纯的处理时间，也就是系统对问题的反应有多快，但是更重要的是开阔的概念“去洞悉速度”。
One thing you need to be aware of is that depending on how you write a specific query, DB2 may deliver the query results in different formats.
您需要注意的一件事就是：根据编写具体查询的方式不同，DB 2可能会交付不同格式的查询结果。
This article covered a lot of ground, highlighting several key aspects of SQL/XML and how you can use it to query data in XML columns.
本文谈到了很多基础知识，提到了SQL/XML的几个关键方面，并展示了如何使用 SQL/XML查询 XML 列中的数据。
Now take a look at the three new operators and how they work together with XML indexes in a query execution plan.
现在看一下这三个新操作符，以及它们与xml索引在执行计划中是如何工作的。
Figure 3 shows a high level view of the query tables needed for this application and how they relate to the physical tables or views in the BPEDB database.
图3显示了一个应用程序所需要的查询表的高级视图，以及如何关联 BPEDB 数据库中的物理表或视图。
You can delve deeper into how a query is written by prepending EXPLAIN to the query, which will return the query plan instead of the result set, as show in Listing 2.
您可以更深入地钻研如何写查询，即在查询开始处加上EXPLAIN，它会返回查询计划，而非结果集，如清单 2 所示。
You can also use an AS clause to name the selected columns in a query. Doing so lets you control how the results are displayed, which is also demonstrated in the next section.
还可以使用As子句命名查询中的选定列，从而允许您控制如何显式结果，这也在下一节中讲述。
This is very similar to how you would write a date in a query.
这和在查询中编写日期非常类似。
Provides helpful hints and tips on how to tune the performance of a distributed query in a federated system.
提供关于如何调优联邦系统中一个分布式查询的性能的提示和技巧。
The example application indexes a set of E-mail documents stored in properties files and shows how to use Lucene's query APIs to search an index.
示例应用程序为存储在属性文件中一组电子邮件文档编制索引，并展示了如何使用Lucene的查询API搜索索引。
Before I do anything else, let's see how db4o would respond to a query that looked for all the Brians in the database right now.
在做其它事情之前，我们先来看看db4o对查找数据库中所有Brian的查询如何作出响应。
Watch how Groovy elegantly lets me focus on the task at hand — performing a simple query — and handles the underlying resource handling for me in Listing 4.
请看清单4中，Groovy替我处理底层资源，从而非常漂亮地让我把注意力集中在手边的任务——执行一个简单的查询。
Note, you can specify a threshold in the Query Tuner preferences to define how old statistics are before they are considered obsolete.
请注意，您可以在QueryTuner优先权中设置一个阈值，定义多旧的数据可认为过时。
In Part 2, I'll explain how to use XPath (a popular query language) in a BPEL file.
在第2部分中，我将阐述如何在BPEL文件中使用XPath(一种流行的查询语言)。
Active Record Query Interface 3.0 - Pratik Naik demonstrates ActiveRecord's finder methods and shows how a number of techniques are being deprecated in Rails 3.1.
Pratik Naik演示了ActiveRecord的finder方法，以及一些在Rails 3.1中将不再支持的技巧。
Active Record Query Interface 3.0 - Pratik Naik demonstrates ActiveRecord's finder methods and shows how a number of techniques are being deprecated in Rails 3.1.
Pratik Naik演示了ActiveRecord的finder方法，以及一些在Rails 3.1中将不再支持的技巧。
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