And, within a column, it decreases down a column.
而且在一列内，它逐次递减。
Additionally, each column from within a relational table is represented by an element.
此外，关系表内的每列都由一个元素表示。
XMLAGG - column function that groups several elements within a parent element.
XMLAGG——将几个元素组成一个父元素的列函数。
XMLAGG - column function that groups several elements within a parent element.
XMLAGG——将几个元素组成一个父元素的列函数。
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