Question

如果PartNumber =“926-AA”，如何选择值“USPrice”？

我的选择总是以ORA-19025结束！

SELECT extractValue(OBJECT_VALUE, '/PurchaseOrder/Items/Item/USPrice/text()') "PRICE" FROM TMP_TABLE
WHERE extractValue(OBJECT_VALUE,'/PurchaseOrder/Items/Item[@PartNumber]') = '926-AA';

这是DDL：

CREATE TABLE TMP_TABLE OF XMLType;
INSERT INTO TMP_TABLE VALUES (XMLType(bfilename('XMLDIR', 'purchaseOrder.xml'),nls_charset_id('AL32UTF8')));

以下是数据：

<PurchaseOrder PurchaseOrderNumber="99503" OrderDate="1999-10-20">
  <Address Type="Shipping">
    <Name>Ellen Adams</Name>
    <Street>123 Maple Street</Street>
    <City>Mill Valley</City>
    <State>CA</State>
    <Zip>10999</Zip>
    <Country>USA</Country>
  </Address>
  <Address Type="Billing">
    <Name>Tai Yee</Name>
    <Street>8 Oak Avenue</Street>
    <City>Old Town</City>
    <State>PA</State>
    <Zip>95819</Zip>
    <Country>USA</Country>
  </Address>
  <DeliveryNotes>Please leave packages in shed by driveway.</DeliveryNotes>
  <Items>
    <Item PartNumber="872-AA">
      <ProductName>Lawnmower</ProductName>
      <Quantity>1</Quantity>
      <USPrice>148.95</USPrice>
      <Comment>Confirm this is electric</Comment>
    </Item>
    <Item PartNumber="926-AA">
      <ProductName>Baby Monitor</ProductName>
      <Quantity>2</Quantity>
      <USPrice>39.98</USPrice>
      <ShipDate>1999-05-21</ShipDate>
    </Item>
  </Items>
</PurchaseOrder>

提前谢谢

Answer 1

听起来像你打算这样做：

select extractvalue(object_value, '/PurchaseOrder/Items/Item[@PartNumber="926-AA"]/USPrice/text()') price
from tmp_table;

或者，如果您有多个行，那么您最好使用XMLTABLE，因为自{11}以来已弃用EXTRACTVALUE：

select *
from   tmp_table tt
       cross join xmltable('/PurchaseOrder/Items/Item'
                           passing tt.object_value
                           columns partnumber varchar2(20) path '@PartNumber',
                                   usprice number path 'USPrice') x
where  x.partnumber = '926-AA';

ORA-19025 - 使用extractValue时节点太多

1 个答案: