For the xmlquery function in the SELECT clause, the porder column of the purchaseorder table is passed by default.
对于select子句中的xmlquery函数，默认情况下传递purchaseorder表的porder列。
For the xmlquery function in the SELECT clause, the porder column of the purchaseorder table is passed by default.
对于select子句中的xmlquery函数，默认情况下传递purchaseorder表的porder列。
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