从XMLTable（Oracle 11gR2）中的XML检索节点值 希望这是一件简单的事情，我只是想不起来，但是考虑一下这个例子： with et as( SELECT xmlType('<Invoice> <InvoiceInformation> <Number>123456</Number> </InvoiceInformation> <InvoiceLines> <InvoiceLine> <Detail> <Amount>100</Amount> <Line>1</Line> </Detail> <Type> <CheesyPotato> <Instructions> <CookTime>120</CookTime> <CookTimeUnits>Minutes</CookTimeUnits> <CookTemperature>450</CookTemperature> </Instructions> </CheesyPotato> </Type> </InvoiceLine> <InvoiceLine> <Detail> <Amount>10000</Amount> <Line>2</Line> </Detail> <Type> <DeathStar> <Instructions> <CookTime>4</CookTime> <CookTimeUnits>5 "parsecs"</CookTimeUnits> <CookTemperature>1000000</CookTemperature> </Instructions> </DeathStar> </Type> </InvoiceLine> <InvoiceLine> <Detail> <Amount>250</Amount> <Line>3</Line> </Detail> <Type> <Quiche> <Instructions> <CookTime>75</CookTime> <CookTimeUnits>Minutes</CookTimeUnits> <CookTemperature>350</CookTemperature> </Instructions> </Quiche> </Type> </InvoiceLine> </InvoiceLines> </Invoice> ') xt from dual ) SELECT ext.* FROM et, XMLTABLE( 'for $Invoice in $INV/Invoice for $InvoiceItem in $Invoice/InvoiceLines/InvoiceLine return <row> { $Invoice ,$InvoiceItem } </row>' PASSING et.xt as INV COLUMNS INVOICENUMBER VARCHAR2 (6) PATH 'Invoice/InvoiceInformation/Number' ,InvoiceLineNumber VARCHAR2 (5) PATH 'InvoiceLine/Detail/Line' ,Amount VARCHAR2 (5) PATH 'InvoiceLine/Detail/Amount' ,CookTime VARCHAR2 (5) PATH 'InvoiceLine/Type//Instructions/CookTime' ,CookTimeUnits VARCHAR2 (15) PATH 'InvoiceLine/Type//Instructions/CookTimeUnits' ,CookTemperature VARCHAR2 (10) PATH 'InvoiceLine/Type//Instructions/CookTemperature' ) ext / INVOICENUMBER INVOICELINENUMBER AMOUNT COOKTIME COOKTIMEUNITS COOKTEMPERATURE ------------- ----------------- ------ -------- --------------- --------------- 123456 1 100 120 Minutes 450 123456 2 10000 4 5 "parsecs" 1000000 123456 3 250 75 Minutes 350

但是，我想在这个查询中获取类型值。因此，如何获取类型为“Name”的子节点，使结果保持原样

    INVOICENUMBER INVOICELINENUMBER AMOUNT COOKTIME COOKTIMEUNITS   COOKTEMPERATURE 
------------- ----------------- ------ -------- --------------- --------------- 
123456        1                 100    120      Minutes         450             
123456        2                 10000  4        5 "parsecs"     1000000         
123456        3                 250    75       Minutes         350

TypeChild       INVOICENUMBER INVOICELINENUMBER AMOUNT COOKTIME COOKTIMEUNITS   COOKTEMPERATURE 
------------------- ------------- ----------------- ------ -------- --------------- --------------- 
CheesyPotato    123456        1                 100    120      Minutes         450             
DeathStar       123456        2                 10000  4        5 "parsecs"     1000000         
Quiche          123456        3                 250    75       Minutes         350

我尝试过各种方法；沿着“，$InvoiceItem/Type/child/name”的行，如果没有任何帮助，将不胜感激，谢谢

    INVOICENUMBER INVOICELINENUMBER AMOUNT COOKTIME COOKTIMEUNITS   COOKTEMPERATURE 
------------- ----------------- ------ -------- --------------- --------------- 
123456        1                 100    120      Minutes         450             
123456        2                 10000  4        5 "parsecs"     1000000         
123456        3                 250    75       Minutes         350

---

还是我只是走错了路？（但是，无法更改的是，我需要能够将此XML使用到查询中！）

工作得非常完美，多么简单！（我就是想不起来！）

    INVOICENUMBER INVOICELINENUMBER AMOUNT COOKTIME COOKTIMEUNITS   COOKTEMPERATURE 
------------- ----------------- ------ -------- --------------- --------------- 
123456        1                 100    120      Minutes         450             
123456        2                 10000  4        5 "parsecs"     1000000         
123456        3                 250    75       Minutes         350