Trim spaces

Hi,
I am running a query on sqlplus:
select id, name, account, code from dealer;
The output I get is something like:
12,John Wilson ,475443543 ,WER345
I want to get rid of the trailing spaces in the output file. The trim function doesnt seem to do nething, please help!
Thanks.

I tried putting in but the output file still has the trailing spaces.
This is my complete code:
sqlplus -s ark/ark@inventory << EOF
set pagesize 0;
set verify off;
set lines 700;
set linesize 200;
set trimspool on;
set trimout on;
set feedback off;
set termout off;
set space 0;
set colsep ',';
spool result.txt
select id, name, account, code from dealer;
spool off;
EOF
The result which is not so clearly displayed here is:
12,John Wilson ,475443543 ,WER345
Where there r like 20 spaces after Wilson, and 5 after 475443543
Thanks

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