Create a data set from the LIVE_WORKITEM_CNT table for the parent work items.
从LIVE_WORKITEM_CNT表格中为上级工作项创建一个数据集合。
The master table has all of the columns of the parent and all subclasses.
主表具有父类和子类的所有列。
Does Database Indexing play any important role in Parent Child table?
并建立索引数据库在亲子表发挥任何重要的作用?
How to access parent attributes via single table inheritance?
如何通过单表继承访问父属性?
How to access parent attributes via single table inheritance?
如何通过单表继承访问父属性?
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