• 索引顺序随机时候,将会发生什么呢?

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

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  • 按照应用索引谓词顺序创建索引

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

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  • 关系索引数据类型始终索引的类型来确定

    The data type of relational indexes is always determined by the type of the indexed column.

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  • 但是如果索引顺序随机将会发生什么呢?

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

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  • 选项可以指定全文索引默认语言

    Option to specify a default language value for full-text indexed columns.

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  • 任何利用索引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.

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  • 否则中的所有全文索引必须使用相同语言

    Is specified, the language of all full-text indexed columns in the table must be the same.

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  • 某些情况下联接索引使查询速度变慢

    In some cases, joining on unindexed columns can result in a slow query.

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  • 太多数据项保存没有过滤索引表中

    Too many items in the list without using filters and indexed columns.

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  • 常见替代项包括索引其他唯一群集

    Common alternatives include clustering index columns or other unique key columns.

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  • 但是如果索引顺序随机将会发生什么呢?

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

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  • 创建全文索引建议每个索引指定一种语言

    When creating a full-text index, we recommend that you specify a language for each indexed column.

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  • 另外DB 2无法排序合并合并连接使用随机顺序索引

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

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  • 语言分析规则因语言而可以每个全文索引指定不同语言

    The rules for this analysis differ for different languages, and you can specify a different language for each full-text indexed column.

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  • 定义惟一索引索引规范关于索引惟一性的信息传递联邦系统

    An index specification that defines a unique index also conveys information about the uniqueness of the index columns to the federated system.

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  • 为此索引个包含索引或者复合索引指定第一

    For this purpose, an indexed column is any single column with an index or the first column named in a composite index.

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  • 重建自动重建所有索引列统计信息,重新组织根本不会更新统计信息。

    REBUILD will automatically rebuild all index-column statistics, whereas REORGANIZE won't update statistics at all.

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  • 示例13收集构成索引所有以及两个索引列中包含分布目录统计信息

    Example 13: Collect catalog statistics with distribution on all columns that are part of the index, plus two columns that are not.

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  • 超过这个限度后,确实存在性能影响一些方法可以克服这个限度,就是使用索引视图

    There are definitely performance impacts when exceeding this limit and there are ways to overcome this limit by using indexed columns and views.

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  • 为了展示一点,将计划第5索引扫描上使用谓词比较针对子惟一索引

    To illustrate this, compare it to the predicate that is applied to the index scan numbered 5 in the plan, which is on the one and only column of the index on the child table.

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  • 这份地图使用符号全部索引中。

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

    《牛津词典》

  • 我们可以使用随机化索引减少争用这有代价呢?

    We can use randomized index key columns to reduce contention, but at what cost?

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  • 这些放在索引开始部分

    Place these columns at the beginning of the index.

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  • 例如可以决定哪些索引受到处理过程影响

    For example, you can influence which indexes or columns are affected by the processing.

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  • 确保查询进行连接操作的索引

    Ensure that columns that are joined in queries have indexes.

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  • 编写报告,要尽可能确保利用具有索引

    When authoring reports, be sure to leverage columns that have indexes wherever possible.

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  • 函数索引中的数据进行转换按照顺序保存转换后的

    A functional index transforms the data in a column and stores the derived values in sorted order.

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  • 索引了一时。

    When a column is indexed.

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  • 包括别名(nickname)、索引用户定义函数UDF统计信息

    This includes statistics for tables, nicknames, indexes, columns, and user-defined functions (UDFs).

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  • 包括别名(nickname)、索引用户定义函数UDF统计信息

    This includes statistics for tables, nicknames, indexes, columns, and user-defined functions (UDFs).

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