这种比较是很有趣的,因为对于当今相当多的XML应用程序来说,clob列是XML存储最常用的选择。
This comparison is interesting because for a certain class of today's XML applications, CLOB columns are a commonly choice for XML storage.
您可以利用 DB2 9.5 中的多列统计信息的扩展用途来为优化器提供更多的信息,从而使优化器更好地估计基数,选择最佳的查询访问计划。
You can leverage the extended use of multi-column statistics in DB2 9.5 to provide the optimizer more information to better estimate the cardinality in order to choose an optimal query access plan.
ListView一个小部件,允许用户从一个项目集合中选择一个或多个项目,项目集合可以显示为具有多种样式的多列格式。
ListView a widget that allows users to select one or more items from a collection of items that can be displayed in a multi-column format with different styles.
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