Hello,
How can I get the sum() of two fields ??
<orders>
<order>
<item>Book</item>
<price>29.9</price>
<qty>3</qty>
</order>
<order>
<item>CD</item>
<price>10.5</price>
<qty>5</qty>
</order>
</orders>
I want to get the subtotal of the above order.xml, which result should be
(29.9*3 + 10.5*5) !!!
I tried sum("/orders/order/price*/orders/order/qty"), but failed !!!
Eric
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