Given a matching index, a single index fetch will pin down the row to be retrieved.
给定一个匹配的索引，通过一个单独的取索引操作就可以得到要检索的行。
An XISCAN plan if only a single index is defined on the table and it is of type XML.
一个XISCAN计划，前提是只对表定义了一个单一的索引并且其类型为XML。
Best of all, a single index card can be filed under several subjects and keywords at the same time.
最重要的是，一个单一的指数卡，可以提交下几个主题和关键词在同一时间内。
We keep only a compound primary key and a secondary index for each row, and answer all queries from a single index.
我们只保留了一个组合主键和一个辅助索引来完成所有的查询。
If DB2 used a single index range scan from 20 to 30, it would miss this document and return an incomplete query result.
如果DB 2在20到30之间使用单个索引范围扫描，则会错过该文档，并返回不完全的查询结果。
Therefore, you have to convert the mask into a single index which can then be used to specify the buffer you are processing, and you have to do it without any branching.
因此，必须将掩码转换为一个索引(可以使用这个索引指定要处理的缓冲区)，而且进行转换时不用任何分支。
If all the columns in the clause appear in the required sequence with a single index, the database server USES the index to read the rows in the ordered sequence, thus avoiding a sort.
如果该子句中所有的列都是以用单个索引要求的顺序出现的，那么数据库服务器就使用索引来按顺序读取行，因而避免了排序。
You can translate the resulting mask back into a single index by counting the leading zeroes, and then subtracting that from 31. A possible assembly language instruction sequence to do this would be
计算前导零，然后从31 中减去前导零数量，就可以将产生的掩码转换为索引。
It would index textual content and metadata so that it could be efficiently searched and applications only had to go to a single location to find it and quickly retrieve it.
它能索引到文字内容和微数据，因此能被高效地搜索到，而应用只需要到一个单独的地方找到它并快速地取到它即可。
This guideline specifies that a single XML index scan be used to access the given table.
该准则指定一个单一的xml索引扫描，将用于访问给定的表。
You can also easily create multiple volumes in a single request by providing a name (which is postfixed with an index), the location, the size, and the format.
您还可以通过提供名称(有后缀索引)、位置、大小和格式在一个请求中轻松创建多个存储卷。
Because the NPSI is a single ordered list, it is easy to see how DB2 could just toggle back and forth, index to table, index to table, and return rows in ZIPCODE order without sorting.
因为NPSI是一个单序列列表，很容易看到DB 2如何来回切换，从表到索引、索引到表，然后以ZIPCODE次序返回行，而不需要排序。
For example, if only a single day should be evaluated (roughly 1,000 rows), accessing the rows using the SALES_DATE index is preferable.
例如，如果只有一天需要计算（约 1,000行），使用 SALES_DATE索引访问行可能更好。
An index can be created on a single column, on derived values of a single column, or on a combination of columns and derived values of columns.
可针对单个列、单个列的派生值、多个列和多个列的派生值创建索引。
Optimization results in the merging of many of the Lucene index files into a single file.
优化会导致多个Lucene索引文件合并成一个单一文件。
Most search engines use an inverted index — rather than compiling a list of every single Web page and all its words, for every single word, they compile a list of the places where it appears.
大部分搜索引擎使用一种倒排索引——不是针对每个单一的单词，为每个单一的网页及其上面的所有单词都编排一个目录，而是为每个单词出现的位置编排一个目录。
For this purpose, an indexed column is any single column with an index or the first column named in a composite index.
为此，索引列是一个包含索引的单列，或者是复合索引中指定的第一个列。
In contrast, if you try to access a single element with an index outside the allowed range, you get an exception.
相反，如果您试图使用允许范围之外的索引来访问单个元素，则会得到一个异常。
This new command allows you to collect statistics and build an index in a single pass of the base table, instead of two passes with the previous implementation of these features.
这条新命令允许您在对基表的一次扫描中收集统计数据，并构建索引，而不像这些特性的以前实现那样需要进行两遍扫描。
DB2 can use an index defined on a single relational column to answer any equality or range predicate on this column.
DB 2可以使用定义在单个关系列上的索引来响应此列上的任何等式谓词或范围谓词。
This list of tags — generated on an AD hoc basis during the actual document parsing — was used as an index for single-byte tag placeholders used in a structure schematic.
该标记列表—在实际的文档解析期间在特别基础上生成—用作结构示意图中使用的单字节标记占位符的索引。
Currently, pollutants are measured at different stations in a city and that data is aggregated to a single number (the air quality index) and published once a day on a website.
目前，污染物测量是在一个城市的多个不同地点进行测量的，然后数据会合计成一个数字(空气质量指数)最后在网站上每天发布一次。
If you use a single page size for relational and XML data, or for data and indexes, a 32kb page size may be beneficial for XML data but somewhat detrimental for relational data and index access.
如果为关系数据和XML数据，或者为数据和索引使用单一的页宽，那么32kb的页宽对于XML数据而言可能有利，但是不利于关系数据和索引的访问。
As of this writing, I can add just the nodes of a single XML document to an index database at a time, by specifying the document's name as a command-line argument.
在写作本文的时候，我只能通过将文档名作为命令行参数指定，每次将单个XML文档的那些节点添加到索引数据库中。
For example, you could follow the idea of the grid index and use the identifier of a single grid cell that overlaps with the geometry.
例如，可以按照网格索引的思想，使用与几何图形重叠的一个网格单元的标识符。
In contrast, a single monitor operated by the United States Embassy in downtown Beijing, where traffic is heavy, consistently reports less healthy air conditions than the official index.
与此相反，位于北京高郊的美国驻华大使馆依其自已的一套监测设备则持续显示，有利有身体健康的空气质量状况统计数据要差于官方数据。
Central bankers cannot add asset prices to core and headline to create a single all-encompassing price index.
央行行长不能将资产价格纳入到核心通胀率和总体通胀率中以建立一个包括所有物价在内的单一指标。
You can store multiple fragments of the same table or index in a single dbspace, reducing the total number of dbspaces needed for a fragmented table.
在单个dbspace中可以存储同一个表或索引的多个片段，从而减少分段表所需要的dbspace总体数量。
You can store multiple fragments of the same table or index in a single dbspace, reducing the total number of dbspaces needed for a fragmented table.
在单个dbspace中可以存储同一个表或索引的多个片段，从而减少分段表所需要的dbspace总体数量。
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