Drag the parent work items data set to the report, and add an extra column in which to show the child work items.

将上级工作项数据集合拖拉到报表中，并添加一个额外的列以显示下级工作项。

youdao

When you create a table, you can add an extra column to be the surrogate key.

当创建一个表时，可以添加一个额外的列作为代理键。

youdao

We add an extra integer column to the table for which optimistic locking is required; this holds a revision counter.

向要使用乐观锁定的表中添加一个额外的整数列；该列保存修订计数器。

youdao

More interestingly, its screenshot features an extra tile column, which is a feature rumored to be part of the Windows Phone 8 GDR3 update, according to ZDNet's Mary Jo Foley.

ENGADGET