Select different values ​​in XMLType

Question

I have a table with an XMLType field. The table is created and loaded using the following DDL / DML:

CREATE TABLE T_ECO_test_LOG
(
  SECID             NUMBER                      NOT NULL,
  LOG_ATTRIBUTES    SYS.XMLTYPE
)

INSERT INTO t_eco_test_log VALUES 
   (       1, XMLType(
              '<attributes>
  <attribute>
    <name>remoteAddress</name>
    <value>180.201.106.130</value>
  </attribute>
  <attribute>
    <name>domain</name>
    <value>BSI_US</value>
  </attribute>
</attributes>'));

INSERT INTO t_eco_test_log VALUES 
   (       2, XMLType(
              '<attributes>
  <attribute>
    <name>user</name>
    <value>xxxx</value>
  </attribute>
  <attribute>
    <name>domain</name>
    <value>BSI_US</value>
  </attribute>
</attributes>'));        

I want to get different values ​​in / attributes / attribute / name, in strings; Thus, with O data, I would like to get:

remoteAddress
domain
user

So far I have tried the following query:

select extractValue(value(x),'/attributes/attribute/name') 
  from t_eco_log,
        table(xmlsequence(extract(log_attributes,'/attributes')) )x

But I get the following message:

ORA-19025: EXTRACTVALUE returns the value of only one node

If i use

select extract(value(x),'/attributes/attribute/name') 
  from t_eco_log,
        table(xmlsequence(extract(log_attributes,'/attributes')) )x

I got an XML result that contains:

<name>remoteAddress</name><name>domain</name>

But I would like to get them as strings, how can I do this?

TIA

Answer 1

Sort of:

with x1 as (select xmltype('<attributes>
  <attribute>
    <name>remoteAddress</name>
    <value>180.201.106.130</value>
  </attribute>
  <attribute>
    <name>domain</name>
    <value>BSI_US</value>
  </attribute>
</attributes>') x2 from dual)
select extract(value(x3),'/attribute/name') 
  from x1,
        table(xmlsequence(extract(x2,'/attributes/*')) ) x3

If you supply CREATE TABLE and INSERT then it is easier to give exact SQL

Answer 2

. , :

with x1 as (select log_attributes x2 from t_eco_test_log)
select distinct(extractValue(value(x3),'/attribute/name')) 
  from x1,
        table(xmlsequence(extract(x2,'/attributes/*')) ) x3

!