Re: How to emulate SQLServer's ( INSERT INTO SELECT FROM .... OPENXML ) functionality in Oracle 9i ???

From: maniekp <maniekpozioma_at_poczta.onet.pl>
Date: Thu, 13 Mar 2003 22:54:38 +0100
Message-ID: <3E70FE1E.2090207@poczta.onet.pl>

KurtisK wrote:
> I am working on a project to port our SQLServer backend to Oracle. I am
> hoping to find a way to emulate
> this SQLServer T-SQL functionality in PL/SQL where a single INSERT statement
> can be used to process multiple row inserts
> from an incoming XML document. The insert must also be able to handle a
> variable in the insert such as the @iNumber variable below that
> is not part of the XML document.
>
> I've included a sample of the SQLServer code below and the results. 2 rows
> are inserted since there are two <Item> nodes in this document.
> I've tried several Oracle methods using XMLTYPE and DBMS_XMLDOM, but I have
> been unsuccessful so far. Any help would be appreciated.
>
>
> -- CREATE TABLE T ( C1 INT, C2 VARCHAR(10), C3 VARCHAR(10) )
>
> delete from t
>
> declare
> @iDoc int,
> @vcXMLDoc varchar(4000),
> @iNumber int
>
> set @iNumber = 1
> set @vcXMLDoc =
> '<Log><Item><OldValue>jones</OldValue><NewValue>JONES</NewValue></Item><Item
>

>><OldValue>smith</OldValue><NewValue>SMITH</NewValue></Item></Log>'

>
>
> EXEC sp_xml_preparedocument @idoc OUTPUT, @vcXMLDoc
>
>
> INSERT INTO T
> SELECT
> @iNumber,
> OldValue,
> NewValue
>
> FROM OPENXML(@iDoc, '/Log/Item/NewValue')
> WITH (OldValue varchar(255) '../OldValue',
> NewValue varchar(255) '.' )
>
>
> EXEC sp_xml_removedocument @iDoc
>
> select * from t
>
>
> C1 C2 C3
> ----------- ---------- ----------
> 1 jones JONES
> 1 smith SMITH
>

why not XSU:

declare

   xml varchar2(2000);
   ctx DBMS_XMLSave.ctxType;
   cnt Number;
begin

   xml:='<Log><Item><OldValue>jones</OldValue><NewValue>JONES</NewValue></Item>'

      ||'<Item><OldValue>smith</OldValue><NewValue>SMITH</NewValue></Item></Log>';    ctx:= DBMS_XMLSave.newContext('t');
   DBMS_XMLSave.setRowTag(ctx,'item');
   DBMS_XMLSave.setIgnoreCase(ctx,1);
   cnt:= DBMS_XMLSave.insertXML(ctx,xml);    DBMS_XMLSave.closeContext(ctx);
end;

You can add global variable through package and trigger ;)

--
maniek

Received on Thu Mar 13 2003 - 15:54:38 CST