其中一列包含所生成的，唯一标识每个记录的关键字。
One of its columns contains a generated key that uniquely identifies each record.
这是因为尽管从不同的散列中获得同一个字符串的返回值，但是将关键字链接到散列上也只是时间的问题。
This is because although completely different hashes are returned for the same string, it just becomes a matter of time before keys are linked to hashes.
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。
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.
如果利用相同的分组关键字或者没有分组关键字，来聚合多个列，那么，所有的聚合都在单个数据传递中的相同操作中进行。
If more than one column is aggregated using the same grouping key or without a grouping key, then all the aggregations are computed within the same operation with a single pass over the data.
事实上，对数以千计的、包含请求搜索的关键字的文档进行排序，以便将与用户最相关的文档列在最上方，这并不是一件容易的任务。
Indeed, taking the thousands of documents that contain the requested keywords and ordering them so the most relevant for the user are at the top is no easy task.
影响任务复杂性的相关要素是不同分组关键字的数量，而不是在计数函数中所看到的，不同的所聚合列的数量。
The relevant factor that impacts the complexity of the job is the number of different grouping keys, not the number of different aggregated columns that you would see in counting functions.
您可以设置主要关键字，创建并编辑查询，添加并删除关系，以及设置一个同步列。
You can set primary keys, create and modify queries, add and remove relationships, and set a concurrency column.
您将找到的大部分结果都是哈希索引站点——有意地连接散列值和其相应关键字的站点。
Most of the results you'll find are hash indexing sites — sites intentionally built to connect hash values and their corresponding keys.
如果当关键字在集合中时它的散列代码被更改，那么将产生一些不可预测和容易混淆的结果。
If a key's hash code were to change while it was in a collection, some unpredictable and confusing consequences could follow.
他们可以控制列宽度，因为他们有很多文本控制办法(断字和对齐)。
They can go for the lower end of column width because they have a lot of control over the text (hyphenation and justification).
当对象的状态更改时如果对象的散列值发生变化，确信当状态作为散列关键字使用时您不允许更更改其状态。
If an object's hash value can change when its state changes, be sure you don't allow its state to change while it is being used as a hash key.
一个JPA实体中的注释，可以显示出表格的列，其他表格之间的关系，主关键字以及等等。
Annotations within a JPA entity can represent table columns, relationships to other tables, primary keys, and so on.
因为图形化字符总是2字节长的，所以可以建立索引的最大图形化字符长度是510个字符，列可以定义为VARGRAPHIC (510)。
Since a graphic character is always 2 bytes long, the maximum graphic length that can be indexed is 510 graphic characters, and the column can be defined as VARGRAPHIC (510).
检查标签中的列关键字，来确认列关键字已经被重新排序，并且与SQL查询返回的数据字段相符。
Check the column keys in the tag to make sure that the column keys are realigned to match the data fields returned by the SQL query.
因此，如果想定义一个最多存储10个字符的varchar列，那么必须将这个列定义为VARCHAR(40)，因为一个字符占用1到4字节。
Hence, if you want to define a VARCHAR column that can store up to 10 characters, you have to define the column as VARCHAR (40) because a single character requires from 1 to 4 bytes.
如果使用可空的vargraphic列，那么1021字节的索引限制仍然是对的。
If you use a nullable VARGRAPHIC column instead, the 1021-byte index limitation is still true.
所有基于散列的集合假设，当对象的散列值用于作为集合中的关键字时它不会改变。
All hash-based collections assume that an object's hash value does not change while it is in use as a key in the collection.
在SELECT关键字之后，select语句可以列出多个列。
A SELECT statement can have multiple columns listed following the SELECT keyword.
如果使用可空的varchar列并只涉及ASCII字符(在utf - 8格式中每字符1字节)，那么可以建立索引的最大字符长度是1021个字符。
If you use a nullable VARCHAR column and only ASCII characters (UTF-8 format 1 byte per character) involved, the maximum character length that can be indexed is 1021 characters.
使配置成为具有一致接口的对象而不是通常的关键字的DIY随机散列。
Making the configuration an object with a consistent interface instead of the usual DIY haphazard hash of keywords.
这个应用程序也有一些我们希望Safari也能拥有的特点：搜索关键字的能力，与及一个能够把浏览器列隐藏的按钮，让网页的内容可以完全显示在屏幕上。
The app boasts some other features we wish were in Safari as well: the ability to search for a keyword, and a button to hide the browser toolbar so web content can completely take over the device.
该方法称作DigestSearch是因为它使用惟一摘要(单向散列)值来表示一个搜索字。
The method is called DigestSearch because it USES the unique digest (one-way hash) value to represent a search word.
在ORCHESTRATE关键字之后指定的列名必须和与适当的DataStage链接相关联的结果集中的一个列匹配。
The column name specified after the ORCHESTRATE keyword needs to match a column in the result set associated with the appropriate DataStage link.
构建了关键字和显示参数散列之后，接下来我们可以查看简单的关键字匹配子程序：matchWords。
Once the keyword and display parameter hash has been built, we can move on to our simple keyword matching subroutine: matchWords.
产生的完美hash()函数返回一个无符号的int值，范围为 0..(k-1)，其中k 值为最大关键字散列值加 1。
The resulting perfect hash() function returns an unsigned int value in the range 0..(k-1), where k is the maximum keyword hash value +1.
loadmetaphones子例程是创建变音位关键字和值的两个散列的简单代码。
The loadMetaPhones subroutine is straightforward code that creates two hashes of metaphone keys and values.
这个表包含一个列族journal_articles，用于存储其中出现该关键字的文章的DOI。
This table includes a column family journal_articles used to store the DOIs of the articles in which the keyword occurs.
事实上，可以在GUN编译器中使用它维护语言关键字的完美散列，其最新的功能使您能够操作更大的数据库。
In fact, it's the tool of choice of maintaining perfect hashes for language keywords in GNU compilers, and recent advances allow you to work with larger datasets.
关键字散列值通常这样计算：将关键字的keysig关联值和关键字长度结合。
A keyword's hash value is typically computed by combining the associated values of its keysig with its length.
如果我们从未在HashMap或其它基于散列的集合中使用Integer作为关键字的话，什么也不会发生。
Nothing, if we never used an Integer as a key in a HashMap or other hash-based collection.
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