Keep in mind that making every query an index-only access is not prudent or even possible.
请记住：使每个查询成为仅索引访问是不谨慎，甚至也是不可能的。
The option can be used in non matching index scans in a screening fashion and as part of index-only access.
该选项以筛选的方式用于非匹配索引扫描，且是仅索引访问的一部分。
You might add a column to an existing index to get index-only access for a portion of the query's processing.
可以在现有的索引中添加列，让查询处理的一部分只访问索引。
In the Global Hunger Index 2019, the country ranks 102nd out of 117. Data from the National Family Health Survey indicate that only 10 percent of infants of 6 to 23 months are adequately fed.
在2019年全球饥饿指数中，该国在117个国家中排名第102位。《全国家庭健康调查》的数据表明，6至23个月大的婴儿中仅有10%得到了充分的喂养。
Only Zips where the cost of living index was between 100 and 200 were considered.
我们只考虑生活费指数在100和200之间的邮政区域。
Instead of indexing many small text fields, aggregate the text into a single "contents" field and index only that (you can still store the other fields).
如果你要索引很多小文本字段，如果没有特别需求，建议你将这些小文本字段合并为一个大的contents字段，然后只索引contents。
Lucene can index only plain text documents, so we need a way to extract the plain text from a rich document format like those above and feed it into Lucene.
Lucene只能为纯文本文档建立索引，因此我们需要找到一种方法将纯文本从上面提到的那些富文档格式的文档中提取出来，然后将其提供给Lucene。
Each index partition indexes rows only from the corresponding data partition.
每个索引分区仅从相应的数据分区取得索引行。
The model file is passed as a parameter during index creation and is only read during index creation; later changes do not affect existing indexes.
在创建索引期间，模型文件作为参数传递，而且只在此期间被读取；以后的修改不影响现有的索引。
Parallel invocations of the stored procedure are only allowed if the index name parameters are different.
只有在索引名称参数不同的情况下，才允许并行调用这个存储过程。
You have a join logical file, but only want the index for the key on SSD, not the secondary indexes.
您有一个连接逻辑文件，但是只希望在SSD中保存键的索引，而不是二级索引。
A good core index excludes this noise, leaving only the enduring part of inflation that reflects the weight of spending in the economy.
而一个良好的核心通胀指标排除了这一噪音，只留下通货膨胀中可以反映经济中花费权重的持续存在的这一部分。
Without complete content, Google and other search engines are left to ignore your pages, or at best only partially index them.
如果没有完整的内容，Google和其他搜索引擎将忽略页面，或者只是部分地索引页面。
The core price index of personal consumption expenditure rose only 0.6% in the fourth quarter, its smallest gain since 1962.
反映个人消费开支情况的核心价格指数在第四季度仅仅增长0.6%，增幅是1962年以来最小的水平。
You have a keyed physical file, but only want the index on SSD and not the data itself because the amount of data in the physical file is too large.
您有一个键控的物理文件，但只希望将索引放到SSD，而不希望将数据本身放到其中，因为物理文件中的数据量非常大。
You have a keyed physical file, but only want the index on SSD and not the data itself because the amount of data in the physical file is too large.
您有一个键控的物理文件，但只希望将索引放到 SSD，而不希望将数据本身放到其中，因为物理文件中的数据量非常大。
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。
The BPP only publishes an American price index, but the rest of the data are sold to investors through a partnership with State Street, a financial firm.
BPP只出版美国的物价指数，不过其余国家的数据都是通过与美国道富金融公司的合作出售给投资者。
That translated into only a 19 percent drop in body mass index, but waist size fell 23 percent.
体现在身体质量指数上，只下降了19%，而腰围却缩小了23%。
The index is based on a survey of 85 countries, only five of which scored more than 80 points.
这个指数基于85个国家的调查数据，只有5个国家超过80。
The slave servers then use rsync to copy only those files in the Lucene index that have been changed.
之后，从服务器使用rsync来只复制Lucene索引中的那些已被更改的文件。
By default, pushing to Git repositories that contain working copies of the files in a project only updates the index for that project, not the actual files in the project.
默认情况下，推入包含项目文件特定工作副本的Git存储库仅更新该项目的索引，而不是项目中的实际文件。
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。
Incremental backup allows you to back up only index and data pages that have changed since a previous backup.
增量备份允许只备份自上一次备份以来发生变化的索引和数据页。
We started with a blind placement strategy of putting the database index files on SSD storage, but that generated only a modest improvement (less than 2x).
首先采取随意安排的策略将数据库索引文件放到SSD存储上，但是这样做只获得不多的性能提升(不超过2倍)。
The standard Scheme document, including the index, is only 50 pages long.
包括索引的标准scheme文档也才只有50页。
Now, if a useful index on INGREDIENT is available, the same search could be completed using only six CPU instructions and would be finished in a fraction of a second.
现在，如果在 INGREDIENT 上有合适的索引，同样的搜索只需6 个CPU指令，会在几分之一秒内完成。
For convenience, only the reliability index of the dangerous gliding plane is given, and the dangerous gliding plane is searched by the safety coefficient method.
为了方便，只计算了按安全系数法搜索最危险滑动面上的可靠度指标。
For convenience, only the reliability index of the dangerous gliding plane is given, and the dangerous gliding plane is searched by the safety coefficient method.
为了方便，只计算了按安全系数法搜索最危险滑动面上的可靠度指标。
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