连接顺序或连接方法是什么?
这个基数会大大影响连接顺序和连接方法。
Cardinality affects join orders and join methods to a large extent.
影响XML查询中的连接顺序和连接方法。
例子7:影响连接顺序3、4、1、2(计划优化)。
Example 7: Influencing Join Order 3, 4, 1, 2 (plan optimization).
连接顺序操作:将这两从条款产生同样的结果吗?
Order of join operations: would these two FROM clauses produce the same results?
而连接方法和连接顺序的选择反过来又会影响计划的质量。
Choice of join methods and join orders in turn affect the quality of the plan.
因此,编写xmlexists谓词的方式可以影响以前的DB 2版本连接顺序。
Thus, the way you write the XMLEXISTS predicate can affect the join order in these previous versions of DB2.
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.
和关系数据库中的连接运算一样,结构连接顺序的选择是XML数据库查询优化的核心。
As join operation to relational database, structural join order selection is at the heart of query optimization in an XML database.
比方说,在调试怀疑连接顺序不是最优的问题时,针对不同的连接组合收集计数可能会有帮助。
For example, in debugging problems where you suspect the join order is not optimal, it can be useful to gather counts for different join combinations.
所述的粒径筛选装置、密度筛选装置、色选装置的连接顺序不定,但最后连接的是包装装置。
Connection sequence of the grain size screening device, the density screening device and the color selection device is variable, however, the packing device is connected at last.
一门科学或一部著作有众多的范畴,并不是任意一种连接顺序都能使之成为逻辑严密的系统。
A branch of science or a book includes in it a host of categories. Not any arrangement of these categories can make it a strict logical system.
可以定义那些只影响执行计划的某些属性的准则,比如查询中的某个表的索引说明,或者一对表的连接顺序。
You can define guidelines that influence only a few attributes of an execution plan, such as index specification for a certain table in the query or join order for a pair of tables.
在select语句中使用视图,可以限制表的连接顺序,同时也限制查询优化器在考虑访问计划时的选择。
Using views in a SELECT statement can restrict the join order of the tables and limit the query optimizer's choices when considering access plans.
关系准则,比如join、MSJOIN、NLJOIN和HSJOIN都可以用来指定连接顺序和连接类型。
Relational guidelines such as join, MSJOIN, NLJOIN, and HSJOIN can be used to specify the join order and the join type.
通过改进原有馈电电路并调整开关矩阵与阵列天线的连接顺序,现提出了一套新型的多辐射中心仿真系统的设计方案。
This paper presents a new de- sign for RFSS of multi - radiation centers, which bases on modifying feed circuits and the join order in traditional sys- tem.
并行活动中的活动通过链接连接在一起后仍可以按顺序运行。
Activities inside a parallel activity can still run in sequential order by connecting them with links.
缓存清单是一个文本文件,按顺序列出所有需要缓存的应用程序资源,确保特定应用程序运行,而无需连接因特网。
The cache manifest is a text file that lists all application resources that need to be cached in order for the given application to work without an Internet connection.
例如,考虑这样的情况:有两个应用程序连接到数据库,并按照如下顺序运行下面的sql语句。
For example, let's consider a situation where there are two applications connecting to the database and running the following SQL statements in the following order.
另外,DB 2无法在排序合并合并连接中使用随机顺序的索引列。
Also, DB2 cannot use random order index columns as part of a sort merge join.
通过明确地描绘出这些活动的连接,您可以确定执行的前后顺序。
By explicitly drawing connections between activities, you establish the sequential order of execution.
联邦优化器还使t - ETL解决方案更具有可适应性,因为当作业中数据特征发生变化时,最佳连接策略和链接顺序也可能随之变化。
The federated optimizer also allows the T-ETL solution to be adaptive, as the best join strategy and link ordering may change as the characteristics of the data in the job change.
根据各种标准,如本地谓词或连接谓词,以及表引用来定制谓词的格式化顺序。
Customize the formatting ordering of the predicates according to various criteria such as local predicates or join predicates, and table references.
否则,您的新任务添加到画布上,以输入时的顺序相互连接,但不会连接到流程图中已经存在的任何元素。
Otherwise, your new tasks are added to the canvas connected to each other in the order that you entered them, but not connected to any element that is already in the process map.
在显示框中的显示顺序就是每个富文本正文字段回复连接到新电子邮件中的顺序。
The order shown in the display box is the order each rich text body field response is concatenated in the new email.
本教程将会按这个顺序执行这些步骤,然后使用浏览器连接Tomcat服务器,我们将获得一个请求和响应,然后就能在Wireshark中进行检查。
This tutorial will work through these steps in this order and then, using a browser connecting to the Tomcat server, we will capture a request and response and examine it in Wireshark.
按以下顺序连接各个阶段。
Dryad程序员会编写几个顺序程序,然后使用单向通道将其连接起来。
A Dryad programmer writes several sequential programs and connects them using one-way channels.
例如,当您用Telnet连接到主机时,打开一个连接,并且您希望所有输入这个Telnet会话的数据都以正确的顺序发送到接收主机。
For instance, when you connect to a host with Telnet, you open a connection and you expect all the data typed into this Telnet session to get sent to the receiving host — in the right order.
例如,当您用Telnet连接到主机时,打开一个连接,并且您希望所有输入这个Telnet会话的数据都以正确的顺序发送到接收主机。
For instance, when you connect to a host with Telnet, you open a connection and you expect all the data typed into this Telnet session to get sent to the receiving host — in the right order.
应用推荐