Shell Programming and Scripting

I have to export data from table into flat file with | delimited. In the ksh file, I am adding below to do this activity.
$DBSTRING contains the sqlplus command and $SQL_STRING contains the SQL query. File is created properly with the data as per SQL command. I am getting white spaces in the columns with its size. I dont want these extra spaces and reduce the size of file. How we can do it without using trim command?

Code:

     RETVAL=`$DBSTRING <<EOF
             SET HEADING OFF
             SET SPACE 0
             SET PAGESIZE  0
             SET PAGESIZE 100
             SET LINESIZE 9999 WRAP ON
             SET COLSEP "|"
             SET FEEDBACK OFF
             SET TRIMSPOOL ON
             SET TRIMOUT  ON
             SET TAB OFF
             SPOOL $OUTPUTFILE
             $SQL_STRING
             SPOOL OFF
             EXIT;
             EOF`

Thanks in advance.

What is the desired output?