SQL & PL/SQL

Hi,

I am spooling output data into text file using command

select 'select t.mxname,bo.lxtype,t.mxrev'||chr(10)||'from mx_1234567'||chr(10)||
'where <condition>';

here mxname varchar(128),lxtype(128),mxrev(128) all are of varchar type.I want the output in format
e.g Part|1211121313|A
but due to column width the output,I am getting is with spaces.
"Part then blank spaces |1211121313 then blank spaces |A"

how can I remove these spaces between columns.I used set space 0 but not working.

Thanks in advance.
Your help will be appreciated.