JPA also has a fully functional query language that can work against an object model.
JPA还拥有可以用于对象模型的全功能查询语言。
To satisfy this query, you must compute the geographical city center, so create a functional index that computes this value.
要满足这个查询，必须计算地理城市中心，因此，需要创建一个函数索引来计算这个值。
This query plan shows an index scan using our functional index.
该查询计划显示索引扫描使用了函数索引。
This query plan shows the use of a functional index.
该查询计划展示了函数索引的使用。
Finally, execute a query that USES the functional index.
最后，执行查询，该查询将使用函数索引。
The in-depth discussion and examples that follow explore creating and using functional indexes and how to generate and examine query plans.
接下来将深入讨论如何创建和使用函数索引，以及如何生成和检验查询计划，并提供具体的示例。
Note: the query optimizer considers using a functional index when the index expression is used in a relational expression or as an argument to one of the operator class functions.
注意：当索引表达式被用于关系表达式，或作为某个操作符类函数的参数时，查询优化器将考虑使用函数索引。
Note: Here is a query for which the optimizer cannot consider using the functional index.
注意：优化器不会对下面这个查询使用函数索引。
Hopefully by seeing the various ways that functional indexes are created and used, you will be able to use them to improve the performance of your query searches.
希望我们介绍的这些创建和使用函数索引的方法能够帮助您改善查询搜索的性能。
XQuery 1.0: a newly introduced query and functional programming language designed to query collections of XML data.
XQuery 1.0：新引入的查询和函数式编程语言，为查询XML数据集合而设计。
Being a functional language, Clojure brings new tricks to data query and manipulation.
作为一种函数式语言，Clojure为数据查询和操作提供了新方法。
A better way to improve the performance of this query is to create a functional index on name.
改善查询性能的一种更好的方法是对name创建函数索引。
XQuery is a high-level, strongly-typed, functional language (free of side-effects) that is ideal to express a query to obtain data both from an XML document and a large XML document repository.
XQuery是一种高端的、强类型的函数语言(没有副作用)，非常适合表达从XML文档或者大型XML存储库(repository)中获取数据的查询。
Using XQuery (a functional language designed to query collections of XML data) with native XML database systems can be extremely useful in some situations.
在某些情况下，在原生XML数据库系统中使用XQuery（一种用于查询 XML数据集合的函数型语言）可能非常有用。
The functional feature and design principle of query system for graph and characters informations in human meridians are studied.
论述了人体经络图文信息查询系统功能特征和设计原理。
A large number of systems using SQL query, user-friendly, highly functional.
系统中大量采用SQL查询语句，界面友好，功能较强。
A large number of systems using SQL query, user-friendly, highly functional.
系统中大量采用SQL查询语句，界面友好，功能较强。
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