How to read the content of a blob col along with other cols as pipe delimit

Hi,
I would like to read the blob content along with the other columns . Assume table TAB1 has columns Response_log, Empcode and Ename. Here Response_log col is a blob data type, and the content of the blob is an xml file.Now i would like to read the content of the xml file of response_log column along with Empcode and Ename as pipe delimited . or else the best option would be to write to a text file with name extract.txt with the data being pipe delimited .
create table tab1(
response_log blob,
empcode number,
ename varchar2(50 byte)
)Sample code goes something like the one below .
select xmltype( response_log, nls_charset_id( 'char_cs' ) ).getclobval() || '|' || empcode || '|' || ename
from tab1 Can I have any other alternate way for this.
Please advice

Just Now one example is given in HOW TO WRITE ,SAVE A FILE IN BLOB COLUMN

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How to read the content of a blob col along with other cols as pipe delimit

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