从性能的角度来看，这被认为是一个非常有效的联接操作，因为通过贯穿唯一索引的唯一访问扫描内部表的成本是最优的。
From the performance perspective, this is considered a very efficient join operation, because the cost for scanning the inner table is optimal via unique access through a unique index.
因为其是一个唯一索引扫描，所以在访问路径图中不显示FETCH或表节点。
There is no FETCH or table node shown in the access path graph because it is an index-only scan.
搜索引擎是知识、财富、还有错误信息唯一最有力的分发点。
Search engines are the single most powerful distribution points of knowledge, wealth, and yes, misinformation.
当我们系统的看这些，不应该装的物品时，唯一改变的是索引值。
As we've seen systematically in the don 't-takes, the only thing that gets changed is the index.
Stocky说，将实时搜索结果集成到Goole搜索引擎中的唯一问题是要知道用户什么时候不需要这些结果。
Stocky says the only problem with including real-time results into the Google search engine is knowing when people don't want them.
为每一行数据所创建的索引成为了计数器，因为每当新的一行数据加进来的时候，这个索引是唯一的增量，这也意味着计数器将与字符串数据的总量同步变化。
The index created for each row of data becomes the count because it was only incremented when a new row of data was found, meaning it is in sync with the amount of data in the string.
该索引要求主键的每一个值都必须是唯一的。
This index requires each value in the primary key to be unique.
最后，然而，唯一条件是在B2B搜索引擎优化的问题是那些实际使用你的前景。
In the end, however, the only terms that matter in B2B SEO are those your prospects actually use.
唯一的限制将是您的网站是否是正确地在互联网上搜索引擎的位置。
The only constraint will be whether your website is correctly positioned on the web's search engines.
此列是定义层次结构的唯一性元素的索引。
This column is the index that defines the unique elements of the hierarchy.
因为你已经确定我推断是三列以确定唯一性(主题行，主体和发件人地址)，所以您将创建包含所有三列的索引。
As you've identified what I infer to be three columns to determine uniqueness (subject line, body, and sender address) you'll create the index to include all three columns.
其他索引型别不支援整数代码，而且所有名称都必须是唯一的。
The other index types do not support integer codes and all names must be unique.
其他索引型别不支援整数代码，而且所有名称都必须是唯一的。
The other index types do not support integer codes and all names must be unique.
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