在这个例子中，我们连接查询之后，再运行查询。
In this example, we concatenate the query before running it.
空间多路连接是涉及多个空间关系的连接查询。
Multiway spatial join is the spatial join query which concern several spatial relations.
多连接查询优化是并行数据库系统的核心问题。
The multi-join query optimization is the critical problem of parallel query optimization in parallel database system.
多连接查询优化是提高数据库性能的关键问题之一。
Query optimization for large join queries is one of the key factors to improving the performance of database systems.
该文还介绍了三种查询方法：空间选择查询、空间连接查询和最近邻居查询。
The paper presents three methods of spatial queries: spatial Select Query, spatial Joint Query, and Nearest Neighbor Query.
如果绑定表示不包含RPC地址，就需要使用绑定入口点并通过连接查询相关联的RPC地址。
If the binding representation does not contain the RPC address, we need to make use of the binding entry point and enquire the associated RPC address with the connection.
总结一下关于XML连接查询的建议，通常将连接谓词转换为应使用的xml索引类型。
To summarize the advice for XML join queries, always cast join predicates to the type of the XML index that should be used.
如果指定了的话，它将只接受“TRUE”值，表示给定表必须是连接查询中进行访问的第一个表。
If specified, it can only take the value 'TRUE' to indicate that the given table must be the first table accessed in a join query.
已有的研究工作多集中在基于单个关系的存储分布，不能有效支持复杂多连接查询处理。
Now most of the research work is based on the storage of single relation, and could not support effectively complex multi-join query.
一个星型连接查询通常包含一个事实表和几个维度表，事实表和每个维度表之间都有连接谓词。
A star join query typically involves a fact table and several dimension tables, with join predicates between the fact table and each dimension table.
本文用最小生成树算法实现了分布式数据库中的多元连接查询，并进行了算法的分析与设计。
This paper used algorithm of minimum spanning tree to realized multi-join queries of distributed database and provided analyzing method.
进一步结合此系统对刀具标准图形数据库中多用户函数连接查询优化方法进行了探讨和研究。
The optimum link-and-inquiry method of multi-user function in the cutter standard graphic database is also discussed and studied in this paper.
本文总结出空间索引系统应提供的三类空间查询：空间范围查询、最近邻居查询、空间连接查询。
We summarize that spatial index system should provides three kinds of spatial query, they are, spatial range query, nearest neighbor query, spatial join query.
为了实现星型连接查询的最佳执行计划，优化器在适当的时候会考虑星型连接优化，并根据成本因素来决定星型连接计划。
The optimizer considers star join optimization when appropriate and decides on star join plan based on cost considerations in order to come up with best execution plan for a star join query.
比方说，对于一般开发人员，使用SQL创建输出结果为新xml文档的多表外连接查询要比编写XQuery复杂得多。
For example, using SQL to create a multi-table outer join that outputs its results to a new XML document is much more complicated to the average developer than writing XQuery.
连接计划指示，强制优化器使用指定的连接方法来连接查询中的表，要么是嵌套循环连接、分类合并连接，要么是动态哈希连接。
Join plan directives that force optimizer to use the designated join method to join tables in the query, either nested loop join, sort merge join, or dynamic hash join.
因此，如果减少每个HTTP请求的总连接数，将一个连接用于多个查询，则可以提高处理器、磁盘和网络性能。
Therefore reducing the number of total connections per HTTP request by reusing a connection for more than one query improves processor, disk, and network performance.
在先前的文章中，您了解了数据库连接和查询结果的jdbc元数据支持。
In previous articles, you learned about JDBC metadata support for both the database connection and the query results.
尽管在注册中心可以表示许多类型的资源，但是以下三种类型的受管理对象对JMS最重要：连接工厂、查询和主题。
While there are many types of resources that can be represented in a registry, three types of administered objects are of primary interest to JMS: connection factory, queue, and topic.
外部连接可能会对查询性能产生负面影响。
Outer joins may have a negative impact on query performance.
所有新的星型连接指令都是查询层次的指令，会影响查询的执行。
All the new star join directives are query level directives that affect the execution of a query.
当连接器执行查询时，它试图将查询返回的列名与在连接器阶段的输出链接中指定的列名匹配。
When the connector executes a query, it tries to match the column names the query returns with the column names specified on the output link of the connector stage.
例如，您可能会想要验证本地数据库应用程序是否打开了连接、执行了查询，并随后关闭了此连接。
For example, you might want to verify that a native database application opened a connection, executed a query, and then closed the connection.
验证查询：在将连接返回给调用方前用于验证连接的SQL查询。
Validation query: the SQL query that is used to validate connections before returning them to the caller.
通常，查询的连接顺序很大程度上决定了查询的执行性能，因为越早地过滤行，效率越高。
Often the join order of a query will greatly determine the query execution performance, since it is more efficient to filter rows as early as possible.
odbc函数有4种主要类型：用于连接、查询、提取数据和错误报告的函数。
There are four main types of ODBC functions: functions for connection, querying, fetching data, and error reporting.
这意味着ij、DatabaseExplorer和Eclipse外部的客户机应用程序都可以连接和查询该数据库中的表。
This means ij, the database Explorer, and a client application external to Eclipse could all connect to and query the tables in the database.
printCatalogServers()方法需要传入JMX连接对象，以便查询服务器Mbean。
The printCatalogServers() method needed the JMX connection object to be passed into it in order to query for the server MBean.
XPath没有提供在查询中连接xml节点的方法。
删除无用的连接操作之后的查询。
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