最外层的元素封装了一个或多个元素，分别代表一个与查询匹配的视频。
The outermost element encloses one or more elements, each representing a video matching the query.
最外层的元素也包含一个或多个元素，分别代表一个匹配搜索查询的结果条目。
The outermost element also encloses one or more elements, each representing a result item matching the search query.
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.
在上面的查询中，必须构造外层的Customer元素并添加来自custxml列数据的属性。
In the above query, you had to construct the outer Customer element and add the attributes from the CUSTXML column data.
另外，在查询中生成商品xml的同时，我们添加了外层的Items元素。
Also, we added the outer items element at the same time as we are generating the items XML in the query.
在这个示例中，这由最外层的选择语句表示，这个语句将S1用作子查询。
In the example, this is represented by the outermost select statement, which USES S1 as a subquery.
在这个示例中，这由最外层的选择语句表示，这个语句将S1用作子查询。
In the example, this is represented by the outermost select statement, which USES S1 as a subquery.
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