必须找到列索引来提取该列的文本内容。

The column index must be found to extract the textual contents of the column.

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一些信息，比如列索引和外键，省略。

Some information, like column indexes and foreign keys, is omitted.

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全文搜索相关性——为什么需要一个多列索引？

Fulltext search with relevance - why the need for a multiple columns index?

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预设情况下，资料列选取会根据资料列索引进行。

By default, row selection is based on row index.

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因此，Cell对象通过Row对象中的列索引进行散列化。

Thus, the Cell objects are being hashed with the column index in the Row object.

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这份地图所使用的符号全部列在索引中。

A list of symbols used on the map is given in the index.

《牛津词典》

当索引列的顺序是随机的时候，将会发生什么呢？

What happens when the order of the index column is random?

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但是如果索引列的顺序是随机的，将会发生什么呢？

But what happens when the order of the index column is random?

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将这些列放在索引的开始部分。

Place these columns at the beginning of the index.

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它们还可以存储结构化类型的列或索引数据。

They can also store structured type columns or index data.

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另外，DB 2无法在排序合并合并连接中使用随机顺序的索引列。

Also, DB2 cannot use random order index columns as part of a sort merge join.

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对于不是索引起始列的所有列，也应使用该模式。

Also use it for all columns that are not the leading column of any index.

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按照您想应用索引列谓词的顺序创建您的索引。

Create your indexes in the order in which you want those index column predicates applied.

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为了提高搜索性能，第一个列将被索引。

For increased search performance, the first column is indexed.

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为应用程序将查询或更新的列创建索引。

Create indexes for the column that your application is querying or updating.

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这是因为它针对索引的第二列。

This is because it is on the second column of the index.

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对于产品xml列，将创建这四个索引。

For the product XML column, we will create those four indexes.

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当索引了一列时。

When a column is indexed.

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第三列是组的一个数字索引。

The third column is a numeric index for the group.

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第二个规则是，要时刻记住尽量使用Sparse列进行索引。

The second rule is that indexes must be written with sparse columns in mind.

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具有可变长度的索引键列。

For an index key column that is of variable length.

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为xml列提供xml索引。

Provide an XML index for an XML column.

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你确信你网站的所有页面都会被列在搜索引擎里吗？

Are you sure that all of your pages are listed in the search engines?

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类型列指定路径表达式，则PATH辅助索引可以提高搜索的速度。

Type columns, a PATH secondary index may be able to speed up the search.

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索引定义必须包含名称及至少一个到索引的列。

Index definition must include a name and at least one column to index.

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具有许多键列的索引称为宽索引。

An index with many key columns is called a wide index.

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基于该列创建的第一个XML索引将成为后续索引的基础。

The first XML index created on the column will be the basis of the others.

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但是如果索引列的顺序是随机的，将会发生什么呢？

Butt what happens when the order of the index column is random?

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取得物件，其中包含资料系结控制项中所选取资料列的资料索引键值。

DataKey objects that represent the data key value of each row in a data-bound control.

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取得物件，其中包含资料系结控制项中所选取资料列的资料索引键值。

DataKey objects that represent the data key value of each row in a data-bound control.

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