Get xmltype in field in Oracle column CLOB

Question

I have a column CLOB type that contain xml format.

I need to get with a simple query all different type from this field:

Ex. The field contain different types:

First record:
<Message type="New Address" xmlns="http://euroconsumers.org/ecommerce/2009/01/scope/messages"><Customer ...

Second record:
<Message type="Added Email" xmlns="http://euroconsumers.org/ecommerce/2009/01/scope/messages"><Customer ...

Third record:
<Message type="New Order" xmlns="http://euroconsumers.org/ecommerce/2009/01/scope/messages"><Customer ...

I would like to retrieve:

New Address
Added Email
New Order

Answer 1

This works for your data:

select xmlquery('/*/@type'
  passing xmltype(<clob column>)
  returning content)
from <your table>;

Demo:

create table t42 (clob_col clob);
insert into t42 values ('<Message type="New Address" xmlns="..."><Customer type="x"></Customer></Message>');
insert into t42 values ('<Message type="Added Email" xmlns="..."><Customer></Customer></Message>');
insert into t42 values ('<Message type="New Order" xmlns="..."><Customer></Customer></Message>');

select xmlquery('/*/@type'
  passing xmltype(t42.clob_col)
  returning content)
from t42;

XMLQUERY('/*/@TYPE'PASSINGXMLTYPE(T42.CLOB_COL)RETURNINGCONTENT)
----------------------------------------------------------------
New Address
Added Email
New Order

Or this:

select xmltype(<clob_column>).extract('/*/@type')
from <your table>;

Demo:

select xmltype(clob_col).extract('/*/@type')
from t42;

XMLTYPE(CLOB_COL).EXTRACT('/*/@TYPE')
-------------------------------------
New Address
Added Email
New Order

Read more about querying XML.