How to parse XML Column and insert values into a table

Question

Hello,
I am working on a simple project to demonstrate how to load and extract XML using SQL, I have already made a table that contains a column of XMLTYPE and loaded an XML file into it (code below)
create or replace directory XMLSRC as 'C:\XMLSRC';
drop table Inventory;
create table Inventory(Inv XMLTYPE);
INSERT INTO Inventory VALUES (XMLTYPE(bfilename('XMLSRC', 'Inventory.xml'),nls_charset_id('AL32UTF')));
select * from Inventory;
I now however need to get the XML data back out of that and loaded into a new table. Troubleshooting guides I have read online seem to only be dealing with parsing an external XML document and loading it into a table, and not what I need to do which is parse a column of XML data and load that into a table. The project trivial with simple tables containing only 3 columns.
The table that needs to be loaded is as follows:
create table InventoryOut(PartNumber Number(10), QTY Number(10), WhLocation varchar2(500));
The XML document is as follows:
<?xml version="1.0" encoding="UTF-8"?>
<dataroot xmlns:od="urn:schemas-microsoft-com:officedata" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="Inventory.xsd" generated="2012-04-09T17:36:30">
<Inventory>
<PartNumber>101</PartNumber>
<QTY>12</QTY>
<WhLocation>WA</WhLocation>
</Inventory>
</dataroot>
Thank you for any help you can offer.

Answer 1

First of all, thank you for your help!! Still stunned that you actually took the time to write out an eample using my tables/names/etc. Thank you!!
Attached is the code, there seems to be an issue with referencing the other table, Inventory.Inv, I checked and that table and the Inv column are showing up in the database so I am not sure why it is having issues locating them, take a look at the code I wrote as well as the output (*I included the real version number for you this time :)
EDIT: In your code right here:
select xt.*
3 from Inventory inve,
4 XMLTable('/dataroot/Inventory'
5 PASSING inve.Inv
I think is where I am messing it up, perhaps not understanding fully what is going on, as you write "Inventory inve" and "inve.Inv" ---- Is inve a keyword that I am just not familiar with? I think this is where the issues lies in my code.
END EDIT
EDIT2: Well that looks like it was it, changed that to how you have it and it now works!!! Could you please explain what that few lines is doing, and what the xt.* and inve are doing? Thanks again!!!
END EDIT2
drop table InventoryOut;
create table InventoryOut (PartNumber number(10), QTY number(10), WhLocation varchar2(500));
insert into InventoryOut (PartNumber, QTY, WhLocation)
select xt.*
from Inventory Inv,
XMLTable('/dataroot/Inventory'
PASSING Inventory.Inv COLUMNS
PartNumber number path 'PartNumber',
QTY number path 'QTY',
WhLocation path 'WhLocation')xt;
select * from InventoryOut;
select * from v$version;
table INVENTORYOUT dropped.
table INVENTORYOUT created.
Error starting at line 4 in command:
insert into InventoryOut (PartNumber, QTY, WhLocation)
select xt.*
from Inventory Inv,
XMLTable('/dataroot/Inventory'
PASSING Inventory.Inv COLUMNS
PartNumber number path 'PartNumber',
QTY number path 'QTY',
WhLocation path 'WhLocation')xt
Error at Command Line:8 Column:12
Error report:
SQL Error: ORA-00904: "INVENTORY"."INV": invalid identifier
00904. 00000 - "%s: invalid identifier"
*Cause:   
*Action:
PARTNUMBER QTY WHLOCATION
BANNER
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
PL/SQL Release 11.2.0.1.0 - Production
CORE     11.2.0.1.0     Production
TNS for 32-bit Windows: Version 11.2.0.1.0 - Production
NLSRTL Version 11.2.0.1.0 - Production
If this helps here is the code and output for the creation of the Inventory table itself:
create or replace directory XMLSRC as 'C:\XMLSRC';
drop table Inventory;
create table Inventory(Inv XMLTYPE);
INSERT INTO Inventory VALUES (XMLTYPE(bfilename('XMLSRC', 'Inventory.xml'),nls_charset_id('AL32UTF')));
select * from Inventory;
directory XMLSRC created.
table INVENTORY dropped.
table INVENTORY created.
1 rows inserted.
INV
<?xml version="1.0" encoding="WINDOWS-1252"?>
<dataroot xmlns:od="urn:schemas-microsoft-com:officedata" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="Inventory.xsd" generated="2012-04-09T17:36:30">
<Inventory>
<PartNumber>101</PartNumber>
<QTY>12</QTY>
<WhLocation>WA</WhLocation>
</Inventory>
</dataroot>
Thanks again for your help so far! Hope we can get this working :)
Edited by: 926502 on Apr 11, 2012 2:47 PM
Edited by: 926502 on Apr 11, 2012 2:49 PM
Edited by: 926502 on Apr 11, 2012 2:54 PM
Edited by: 926502 on Apr 11, 2012 2:54 PM
Updated issue to solved - Edited by: 926502 on Apr 11, 2012 2:55 PM