Shell script syntax

Hi,

Im trying to write a script for the following:

I have a file with a list of numbers (over 300)

So I want to input them into a SQL statament:

select * from todo where TODD='89014104254327F';

And them thrown it it a file.

So I thought something like this (not sure of the syntax)

while [ condition until the file finishes ]
do
output=`sqlplus -s ${db_user}/${db_pass}@${SID} <<!
      set heading off
      set feedback off
      select * from todo where TODD=${variable};
      exit;
      !`

${output} >> ultimate_file.txt

some counter for the condition??

done


===================

The file with the numbers looks like this:

525245
252524
252345
234245
242342
123123
144144
.
.


Tks,
joao