通过在一个未投射的数据项上的after - aggregation细节过滤器中使用for子句，底层查询会自动将该项目投射并分组为列表的最外层列。
By using the for clause in the after-aggregation detail filter on a non-projected data item, the underlying query automatically projects and groups the item as the outer most column of the list.
尽管Product line现在已经替换为Product type查询项目，但摘要过滤器仍然就位，并以一个现在没有投射的数据项目“Product line”为范围。
Although the Product line has been replaced with the Product type query item, the summary filter is still in place and scoped on a now non-projected data item "Product line".
由于Product line是一个已投射查询项目，那么这个特殊报告的过滤器将会是原始摘要过滤器。
As Product line is a projected query item, the filter for this particular report would be the original summary filter of.
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