XML question export data to XML

Question

I need to export XML in a certain format. This is the first time i need to export XML. What i can do is:
select xmlelement("IDpart",
     xmlelement("ID", XMLAttributes( e.ID_SUBID AS "ID_SUBID"),
          xmlelement("timeperiod", XMLAttributes( e.start_date AS "startdate"))))
AS "result"
from example e
<IDpart><ID ID_SUBID="2:2_O_2"><timeperiod startdate="2008-01-22"></timeperiod></ID></IDpart>
Create table script
-- DDL for Table EXAMPLE
CREATE TABLE "HR"."EXAMPLE"
(     "ID_SUBID" VARCHAR2(20),
     "END_DATE" DATE,
     "START_DATE" DATE,
     "VALUE" NUMBER,
     "STATUS" VARCHAR2(5)
-- DATA FOR TABLE EXAMPLE
-- FILTER = none used
-- INSERTING into EXAMPLE
Insert into EXAMPLE (ID_SUBID,END_DATE,START_DATE,VALUE,STATUS) values ('2:2_O_2',to_date('22-JAN-08','DD-MON-RR'),to_date('22-JAN-08','DD-MON-RR'),0.2,'A');
Insert into EXAMPLE (ID_SUBID,END_DATE,START_DATE,VALUE,STATUS) values ('2:2_O_2',to_date('22-JAN-08','DD-MON-RR'),to_date('22-JAN-08','DD-MON-RR'),0.2,'B');
-- END DATA FOR TABLE EXAMPLE
Can you help me to get my output like this?
<IDpart><ID ID_SUBID= "2:2_O_2"/><timeperiod startdate="22-JAN-08"/> <Readings><Reading Value="0.2"> <statuscodes><code>A</code><code>B</code>
</Reading></Readings></IDpart>
---------------------------------------------------

Answer 1

My xml does summarize some data but i want it in another format/ range. Can you help me?
My code:-->
SELECT XMLElement("MeterReadingDocument",
XMLAttributes('http://www.w3.org/2001/XMLSchema' AS "xmlns:xsd",
'http://www.w3.org/2001/XMLSchema-instance' AS "xmlns:xsi"),
     XMLElement("Channels", XMLElement("Channel",
     Xmlelement("ChannelID",xmlattributes(d.CHANNELID_SPCID "IntervalChannelID")),
     Xmlelement("ContigiousIntervalSets",xmlelement("ContigiousIntervalSet",
xmlattributes(d.REC_AANTAL "NumberOfReadings"),
Xmlelement("TimePeriod",
xmlattributes(to_char(d.START_TIME, 'dd-mm-yyyy"T"hh24:mi:ss"Z"') “StartTime", to_char(d.END_TIME, 'dd-mm-yyyy"T"hh24:mi:ss"Z"') "EndTime")),
     Xmlelement("Readings", xmlelement("Reading",xmlattributes(d.WAARDE "Value"),
Xmlelement("Readingstatus",xmlelement("Unencodedstatus", xmlattributes(d.SOURCE "SourceValidation"),
Xmlelement("StatusCodes", xmlagg(xmlelement("Code", d.DESCRIPTION))))))))))))
.extract('*').getstringval() xml FROM DM_IEE d
where to_char(d.END_TIME, 'dd-mm-yyyy"T"hh24:mi:ss"Z"')= '03-04-2007T09:55:00Z'
Or to_char(d.END_TIME, 'dd-mm-yyyy"T"hh24:mi:ss"Z"')= '03-04-2007T10:00:00Z'
group by d.CHANNELID_SPCID, d.REC_AANTAL, d.START_TIME, d.END_TIME, d.WAARDE, d.SOURCE
My output-->
<MeterReadingDocument xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<Channels>
<Channel>
<ChannelID IntervalChannelID="68979_OP_98189091:10111"/>
<ContigiousIntervalSets>
<ContigiousIntervalSet>
<TimePeriod StartTime="03-04-2007T09:55:00Z" EndTime="03-04-2007T10:00:00Z"/>
<Readings>
<Reading Value="-54.5">
<Readingstatus>
<Unencodedstatus SourceValidation="Passed">
<StatusCodes>
<Code>MANACCEPTED</Code>
<Code>MISSING</Code>
</StatusCodes>
</Unencodedstatus>
</Readingstatus>
</Reading>
</Readings>
</ContigiousIntervalSet>
</ContigiousIntervalSets>
</Channel>
</Channels>
</MeterReadingDocument>
<MeterReadingDocument xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<Channels>
<Channel>
<ChannelID IntervalChannelID="68979_OP_98189091:10111"/>
<ContigiousIntervalSets>
<ContigiousIntervalSet NumberOfReadings="2">
<TimePeriod StartTime="03-04-2007T09:50:00Z" EndTime="03-04-2007T09:55:00Z"/>
<Readings>
<Reading Value="87">
<Readingstatus>
<Unencodedstatus SourceValidation="Passed">
<StatusCodes>
<Code>MANACCEPTED</Code>
<Code>MISSING</Code>
</StatusCodes>
</Unencodedstatus>
</Readingstatus>
</Reading>
<Reading Value="-54.5">
<Readingstatus>
<Unencodedstatus SourceValidation="Passed">
<StatusCodes>
<Code>MANACCEPTED</Code>
<Code>MISSING</Code>
</StatusCodes>
</Unencodedstatus>
</Readingstatus>
</Reading>
</Readings>
</ContigiousIntervalSet>
</ContigiousIntervalSets>
</Channel>
</Channels>
</MeterReadingDocument>
2 rows selected
The output i want:-->
start_time is the start time of the first record and end_date the end_date of the last record. Can you help me?
<MeterReadingDocument xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<Channels>
<Channel>
<ChannelID IntervalChannelID="68979_OP_98189091:10111"/>
<ContigiousIntervalSets>
<ContigiousIntervalSet NumberOfReadings="2">
<TimePeriod StartTime="03-04-2007T09:50:00Z" EndTime="03-04-2007T10:00:00Z"/>
<Readings>
<Reading Value="87">
<Readingstatus>
<Unencodedstatus SourceValidation="Passed">
<StatusCodes>
<Code>MANACCEPTED</Code>
<Code>MISSING</Code>
</StatusCodes>
</Unencodedstatus>
</Readingstatus>
</Reading>
</Readings>
</ContigiousIntervalSet>
</ContigiousIntervalSets>
</Channel>
</Channels>
</MeterReadingDocument>