作业对各订单id执行一次数据库查询。
一个网格通常用于显示数据库查询的结果。
A grid is often used to display the results of a database query.
在您测试编排之前，需要修改数据库查询语句。
Before you can test the orchestration, you have to adjust the database query.
因此可以以方便的方式表示数据库查询的结果。
This is a very useful way to represent the results of the database queries.
能力测试将以连续的次序执行一个数据库查询流。
The Power test executes a single stream of database queries in sequential order.
应用程序使用SQL数据库查询和更新配置文件。
The application was using an SQL database for querying and updating profiles.
我们的最后一个示例是根据数据库查询生成XML。
由于有四个订单id，因此作业执行了四次数据库查询。
Since there are four order IDs, the job performs four database queries.
这是IBM进行数据库查询来提高性能的优化努力的结果。
This is a result of the optimization efforts IBM performed to improve the performance of database queries.
数据库查询非常高效，服务器存在冗余，内存被高效使用。
Database queries are efficient, servers are made redundant, memory is used efficiently.
惰性抓取可以尽可能减少从数据库查询到的数据量。
Lazy fetching minimizes the amount of data queried from the database.
这两个函数对于完成数据库查询的整个处理过程是非常重要的。
Both these functions are essential to complete the full cycle of a database query.
通过重要的数据库查询得到的错误数据可以证明存在其他问题。
Another problem may manifest itself with bad data coming from an important database query.
如果数据库查询和Web服务调用并行进行，异步用例表现更加良好。
If database query and Web service invocation could occur in parallel, the asynchronous case would behave better.
通常，需要从一组已有的数据库查询语句(SQL)实现应用程序构建。
It is often the case that the process of building an application originates from having a set of database query statements (i.e. SQL).
开发人员和数据库管理员可以使用本教程来提高他们的数据库查询技能。
Developers and database administrators can use this tutorial to enhance their database query skills.
但是在真实环境中，需要用数据库查询引擎能够理解的一种语法编写查询。
However, in the real world you need to formulate it in a syntax that is understood by the database query engine.
将在应用服务器上进行数据库查询，还将在这里操作并组织数据以供展示。
Queries to the database are made from the application server, and data is manipulated and organized for presentation there as well.
一旦返回数据库查询的响应之后，就不再需要回复、中间状态和查询本身。
Once a reply to a database query has been returned, then the reply, the intermediate state, and the query itself are no longer needed.
此类操作(由恰当的关系理论作为支持)是数据库查询优化器的核心所在。
Manipulations like this (backed by the proper relational theory) are at the heart of database query optimizers. The resulting tree is shown in Figure 2.
我们将研究这两个环境在应用程序代码、数据库查询和关系模式方面的差异。
We will explore the difference in the application code, database queries and the relational schemas for the two environments.
TPC- H中的数据库查询要比典型的OLTP查询更加复杂。
The database queries in TPC-H are more complex than typical OLTP queries.
而如果我使用SQL，那么你就可能直接告诉我某处数据库查询表述是否错了。
But, you can certainly tell me if I described a database query wrong if I was using SQL.
在过去，实现相同的数据库查询操作至少需要两倍于此数量级的代码。
In the past, an equivalent implementation to perform a database lookup would have required a couple orders of magnitude more code.
这种应用的典型运行方式是直接连接数据库服务器进行各种数据库查询。
This kind of application typically connected to a database server to run various queries.
在可以执行数据库查询之前，必需创建一个数据库，其中包含用相关数据填充的多个表。
But before you can perform a database query, you must create a database that contains several tables populated with relevant data.
此活动需要执行一些数据库查询操作，因此会造成加载用户主页出现显著延时。
This activity requires the execution of several database lookups and therefore significantly delays the loading of the user's home page.
如果数据大小较小，或者索引对于数据库查询的性能改善帮助不大，则不适合使用函数索引。
Indexes won't help much when the size of your data is small or when the majority of queries issued against your database would generally not benefit from an index.
在执行产生大型结果集的数据库查询时，常常对结果进行分页，然后让用户在页面之间导航。
When database queries that produce large result sets are executed, it's common to break the result set into pages and then require the user to navigate among the pages.
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