FreeLists / oracle-l / Writing text file from PL/SQL block

["Anju Bala" <oraclebala@xxxxxxxxx>]

hi list,

I have a strange but interesting problem. I have three tables with below
structure , I need to generate a text file using a PL/SQL block on the basis
of below criteria:

Table1 structure
****************
dealerid number;name varchar2(100);age number(3);sex char(1);

table2 structure
*******************
feed_id number(10);feed_name varchar(20);feed_format clob;

table3 structure
******************
feed_id number(10);column_name varchar2(100); -- to store the column name of
table1
column_position number(2); -- to store at what position column of table1
should be written
application_id number(4); -- to store what application it is

scenario1
************

i have to generate a text file from PL/SQL block wherein table1 column data
should be written based on the position mentioned in table3. for example if
dealerid is in 3 position,name is in 1 and age is in 2 position then my text
file should contain data something like :

name,age,position

Scenario2
************
if table3 doesnt contain any record for any column of table1 then that
column should not be written.


I know it can only be done using UTL_FILE package but dont know how to
achieve it? I would really be obliged if anyone can provide with a sample
block to achive this to me.

Please