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.
一些信息，比如列索引和外键，省略。
Some information, like column indexes and foreign keys, is omitted.
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?
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.
此事件的处理程序接收鼠标指针所在位置的列索引和行索引。
The handler for this event receives the column index and row index of the mouse pointer position.
如果您通过表的行索引或列索引检索值，将无法设置返回值。
If you retrieve the value by means of the table's row index or column index, you will not be able to set the return value.
不过，如果左右两侧都是散列索引，而用户可能希望主视图是有序的。
However, if both of them are hash indexes, the user may want the main view to be ordered.
该方法接受5个参数：行索引、列索引、单元格值、电子表格键和工作表键。
This method accepts five arguments: the row index, the column index, the cell value, the spreadsheet key, and the worksheet key.
要求两个索引值来查找数据：列索引和行索引，和其他一样都是从0开始。
It requires two indices to locate an element: a column index and a row index, both of which are zero-based like everything else in LabVIEW.
索引下推只需要事实表的单列索引，虽然在所需的外键列是索引的第一个键的情况下可以使用多列索引。
Index push-downs require only a single-column index on the fact table, although they can use a multi-column index if the required foreign-key column is the first key in the index.
如果查询中有属于多列索引的连接列或过滤列，则使用UPDATESTATISTICSHIGH。
Use UPDATE STATISTICS HIGH if queries have a multi-column indexed defined on join columns or filter columns.
为了便于讨论，我们选择的索引是一个三列索引，名为IX1，在(COLA,COLB,COLC)上创建。
For the purposes of discussion, our chosen index is a three-column index called IX1 created on (COLA, COLB, COLC).
这份地图所使用的符号全部列在索引中。
当索引列的顺序是随机的时候，将会发生什么呢？
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?
这些编目描述了数据库对象，例如表、列和索引，并包含关于用户所拥有的访问这些对象的访问类型的信息。
The catalog describes the database objects, such as tables, columns, and indexes, and contains information about the types of access that users have to these objects.
将这些列放在索引的开始部分。
它将查询数据库，为结果的每行中的每列建立索引，并且将每个索引条目绑定到行的主键上。
It queries your database, indexes each column in each row of the result, and ties each index entry to the row's primary key.
它们还可以存储结构化类型的列或索引数据。
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.
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。
For this purpose, an indexed column is any single column with an index or the first column named in a composite index.
关于列定义、索引以及昵称统计信息的信息存储在DB 2联邦数据库系统编目中。
Information about the column definitions, index, and statistics for a nickname is stored in the DB2 federated database system catalogs.
此处，我们必须在所选列在树中出现的位置找到该列的索引。
Here you must find the index of the column in the position as it appears in the tree.
最后，可以根据列编号为这些列建立索引，并直接强制转换结果(对于某些类型)。
Finally, you can index into the columns by column number and cast the results directly (for some types).
任何利用主索引列的查询将会遭遇更快速响应时间问题。
Any query that utilizes the Primary Index column will encounter faster response times.
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.
确保查询中进行连接操作的列都有索引。
Ensure that columns that are joined in queries have indexes.
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.
也可以将经常被访问的数据作为include子句中的列包含在索引中。
Frequently accessed data can also be included within an index as included columns.
也可以将经常被访问的数据作为include子句中的列包含在索引中。
Frequently accessed data can also be included within an index as included columns.
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