Rename the second attribute to DESCRIPTION and change its data type to VARCHAR (1024).

将第二个属性重新命名为DESCRIPTION，并将它的数据类型改为VARCHAR (1024)。

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Most of the methods in this class simply describe various aspects of the aggregation, such as data type, title, and description information, to show up in the BIRT Aggregation widget drop-down list.

此类中的大部分方法只是简单描述要在 BIRT Aggregation Widgets 下拉列表中显示的聚合的各个方面，比如数据类型、标题和描述信息。

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Description: Change a constraint (data type, size, etc) to simplify the problem Then try to solve it Once you have an algorithm for the "simplified" problem, generalize the problem again.

说明：通过改变一些条件，(比如数据类型或者问题的规模)来简化问题，然后设计一个算法来解决这个简化过的问题，然后在问题一般化还原回来。

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