Complex transformation inserting xml data to oracle database.

Question

Hi,
I Have one small Problem While loading xml data to a oracle database.
In the XSD i have the Columns Like this.
<Data>
<Type_Trs>
<T1>
<T2>
</Data>
My Database contains only two columns
For Example:
Type_Trs
Corr_Data.
Now My problem is Based on Type_Trs Value i need to take values of T1 and T2 should be loaded in Corr_Data column.
How to write Xsl transformation for this using <xsl:choose>.
For Clearing the Question I am giving the Example.
Case : 1
<Data>
<type_Trs>BO</Type_Trs>
<T1>1</T1>
<T2>2</T2>
</Data>
In the Example my type_trs is value 'BO', so the Data in table should be
Type_Trs Corr_Data
======= =======
BO 1
Case : 2
<Data>
<type_Trs>CP</Type_Trs>
<T1>1</T1>
<T2>2</T2>
</Data>
In the Example my type_trs is value 'CP', so the Data in table should be
Type_Trs Corr_Data
======= =======
CP 2
For doing this How can i write my XSL transformation based on the condition?
Thanks in advances
Regards
GSR

Answer 1

Why do you need a XSL transformation for this? Can you not get the results based on this select:
SQL> SELECT DISTINCT EXTRACTVALUE (t2.COLUMN_VALUE, 'Type_Trs') type_trs,
                CASE EXTRACTVALUE (t2.COLUMN_VALUE, 'Type_Trs')
                   WHEN 'BO'
                      THEN EXTRACTVALUE (t3.COLUMN_VALUE, 'T1')
                   WHEN 'CP'
                      THEN EXTRACTVALUE (t4.COLUMN_VALUE, 'T2')
                END corr_data
           FROM TABLE
                   (XMLSEQUENCE
                       (EXTRACT
                           (XMLTYPE
                               ('<Data>
                      <Type_Trs>BO</Type_Trs>
                      <T1>1</T1>
                      <T2>2</T2>
                      <Type_Trs>CP</Type_Trs>
                      <T1>1</T1>
                      <T2>2</T2>
                    </Data>'
                            '/Data'
                   ) t1,
                TABLE (XMLSEQUENCE (EXTRACT (t1.COLUMN_VALUE,
                                             '/Data/Type_Trs')
                      ) t2,
                TABLE (XMLSEQUENCE (EXTRACT (t1.COLUMN_VALUE, '/Data/T1'))) t3,
                TABLE (XMLSEQUENCE (EXTRACT (t1.COLUMN_VALUE, '/Data/T2'))) t4
TYPE_TRS   CORR_DATA
CP         2        
BO         1