For multiple column work, a better average is 40 to 50 characters.
对于多列页面，平均在40至50个字符每行最好。
There are still keys but they point to multiple columns. The columns are arranged by column family.
仍然有主键，但它的值可以指向多个按照columnFamily组织的列。
The previous example demonstrated how to modify multiple column values for a specific row in a single table.
上例演示了如何修改单个表中特定行的多个列值。
Users can extend the analysis to multiple columns, taking advantage of the built-in virtual column support noted above.
用户可以将分析扩展到多个列，利用前面提到的内建的虚拟列支持。
For desktop HTML browsers, you can define multiple column containers on one page so that portlets are displayed in multiple columns.
对于桌面HTML浏览器，您可以在一个页面上定义多个列容器以使portlet在多个列中被显示。
Without this requirement, the itemNumber column isn't guaranteed to be unique because multiple columns could be assigned a NULL value.
如果没有这个要求，itemnumber列就无法保持惟一，因为多个行都可能被分配null值。
Traditionally, relational DBMSs stored XML data as a single column-row entity (such as CLOB, BLOB, or VARCHAR) or decomposed ("shred") the XML data into multiple columns.
通常，关系型DBMS 将XML数据作为单个的列-行实体（例如CLOB、BLOB或VARCHAR）进行存储，或将 XML 数据分解（“撕碎”）为多个列。
But if you use multiple aggregations with the same grouping keys, or multiple counting functions that count the same column, it will not significantly increase the execution time of the rule.
但是，如果使用具有相同分组关键字的多个聚合，或者对相同列进行计数的计数函数，其不会显著增加规则的执行时间。
Note that if your documents have multiple categories selected, you need to use additional code in the view column formula to ensure that all categories are displayed and can be looked up.
注意，如果文档选择了多个类别，那么需要在视图列公式中使用附加代码来确保所有类别都被显示，并且能够被查找。
The use of column groups provides more accurate estimates of the joint selectivity of multiple predicates.
列组的使用将给多个谓词的联合选择提供更准确的估计。
In this column, I'll be using the fairly simple example of a grocery store checkout area with multiple aisles.
在本专栏文章中，我将一直使用食品杂货店内具有多条通道的付款区域这个相当简单的示例。
This section of the article shows how to create a data table whose columns have multiple controls within the column.
本文的该节向您展示了如何创建一个在列中有多个控件的数据表格。
In the example in Listing 7, multiple computes have been performed for each break point on column SALARY.
在清单7的示例中，对列salary上的每个断点执行多个计算操作。
Relational databases use Structured Query Language (SQL) to pull information from multiple tables and columns, but key-value stores are limited to operations on the key column.
关系数据库使用结构化查询语言(Structured Query Language,SQL)以便从多个表和列中提取信息，但是键值存储仅限于对键列的操作。
The unitID column identifies the unit containing the department (a unit may contain multiple departments), and the deptdoc column contains an XML document listing the employees in the department.
unitid列标识包含部门的单位(一个单位可能包含多个部门)，deptdoc列包含一个列出部门中的员工的XML文档。
The queries are simple with good performance because you need not do any joins to access multiple subclasses, and ActiveRecord can use the type column to determine which records to return.
这些查询简单且性能很好，因为您无需进行任何连接来访问多个子类，ActiveRecord可以使用type列决定哪个记录能够返回。
Another prior Charming Python column developed and presented a library to enable multiple dispatch.
可爱的Python先前的另一期文章开发并描述了一个支持多分派的库。
Multiple elements (or, more generally, column names) are separated by commas.
多个元素(或者更通俗地说，是多个列名称)用逗号分隔开。
You might recall the graphs from last month's column showing how throughput can drop dramatically once multiple threads contend for a built-in monitor lock using synchronization.
您可以回想上月专栏中的图，该图显示了一旦多个线程使用同步竞争一个内置监视器，吞吐量将如何大幅度下降。
Users love having multiple account support and a single column view of tweets.
用户喜欢它对多帐户的支持和一栏式的消息阅览模式。
In my last column, I explained how you can use table partitioning to organize data across multiple storage objects based on values in one or more columns.
在我的上一期专栏中，我阐述了如何使用表分区，基于一列或多列中的值，跨多个存储对象组织数据。
However, if you issue multiple "create index" statements, all documents in the XML column will be traversed multiple times.
然而，如果发出多条“createindex”语句，那么xml列中的所有文档将被访问多次。
Two curved screens-one in the steering wheel and one mounted to the steering column-give the driver a nearly 180-degree view of the track around him, thanks to multiple exterior cameras.
方向盘和转向杆上安装的两个曲面屏，给驾驶员提供了180视角，可通过多个外部摄像头来观察周围的路况。
You can define multiple modeling flags for a column.
可以为一个列定义多个建模标志。
Multiple anti seismic lines of defence systems having strong column, middle beam and weak brace will be formed by selecting rational reinforced concrete brace sections.
选择合理的钢筋混凝土支撑截面可以形成“强柱、中梁、弱支撑”的多道抗震防线体系。
Quickly dropping and re-creating multiple indexes, views, statistics when altering a column.
快速删除和重新创建多个索引，视图，数据更改时柱。
This nuclear medicine bone scan reveals multiple areas of increased uptake, which are the darker foci, such as in the vertebral column representing metastases.
核素扫描显示多个病灶，脊柱周围颜色较深的病灶代表转移性病变。
This nuclear medicine bone scan reveals multiple areas of increased uptake, which are the darker foci, such as in the vertebral column representing metastases.
核素扫描显示多个病灶，脊柱周围颜色较深的病灶代表转移性病变。
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