XMLDB query on XmlType Column.

Question

Hi,
I’ve some problems.
I’ve some search queries which are working on normal relation table, but I don’t know how it works on XMLDB(Oracle 10gR2)
Structure of XML file
My xml table structure will be :
Create table <tablename>
Person_Id number primary key,
Person_BankName varchar2,
DateOfEntry date,
Xmlcol xmltype
Xmlcol xmltype will be mapped to a schema for the below xml file.
XML File
<Person>
     <Information>
          <firstname>Suchendra</firstname>
          <lastname>Kumar</lastname>
          <middlename>Krishna</middlename>
     </Information>
     <Account>
          <accountno>12212</accountno>
          <balance>42323.89</balance>
          <opendate>12-03-2005</opendate>
     </Account>
     <Transaction>
          <transamount>1000</transamount>
          <balance>41323.89</balance>
          <trandate>14-03-2005</ trandate >
          <trantime>10:40:22</trantime>
     </ Transaction >
</Person>
SQL Queries Required
1.     Query to fetch the records whose transaction has been done from date 12-03-2001 to date 01-01-2005.
2.     Query to fetch the records whose lastname= “*Kumar”
3.     Query to fetch the records whose transaction has been done from time 9:09:55 to time12:26:23.
4.     Query to fetch the records whose balance > 4000 and balance < 5000.
5.     Regular expression Search in XMLDB. Ex: searching for records whose firstname has ‘su*’ or ‘*ab’ in it.
Can anyone help me in this..
Thanks
Athar

Answer 1

1. select *
from <tablename>
where extractValue(Xmlcol, '/Person/trandate') is between '12-03-2001' and '01-01-2005';
2. select *
from <tablename>
where extractValue(Xmlcol, '/Person/lastname') like '*Kumar';
3. select *
from <tablename>
where extractValue(Xmlcol, '/Person/trantime') is between '9:09:55' and '12:26:23';
4. select *
from <tablename>
where extractValue(Xmlcol, '/Person/balance') > 4000'
and extractValue(Xmlcol, '/Person/balance') < 5000;
5. select *
from <tablename>
where extractValue(Xmlcol, '/Person/firstname') like 'su*'
or extractValue(Xmlcol, '/Person/firstname') like ‘*ab’;
Regards,
Kamal Shrivastava