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pl/sql spool adds extra spaces to columns

i have sql file - myfile.sql  which i created to export data from table in a '|' separated text file

spool off;
set linesize 500
set pagesize 50000
SET HEADING OFF
set COLSEP '~'
SET newpage none
SET verify off
SET term off
SET trims ON
SET trimspool ON
set serveroutput ON
set echo off

spool mydata.txt

select ltrim(rtrim(mycol1)) , ltrim(rtrim(mycol2)) , '|' from mytable1;
spool off;
exit;


Now if I execute myfile.sql, it automatically adds lots of spaces to both the columns
for e.g if value of mycol1 is 'asdf'  and mycol2 is 'abcd'
it spools it  as
asdf                      |abcd                      |

pl help

i need trimmed values for all the columns in the spooled text file mydata.txt
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at999
Asked:
at999
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2 Solutions
 
slightwv (䄆 Netminder) Commented:
Use string concatination.

In 11g there is listagg.

or the old manual version:
select ltrim(rtrim(mycol1)) || '|' ||  ltrim(rtrim(mycol2))  || '|' from mytable1;

If this can be greater than 4000 characters, I suggest the XML approach:
http://www.experts-exchange.com/Database/Oracle/Q_24914739.html#a25864822


Also: PL/SQL is Oracle's Procedural language.  What you have is just called SQL.
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at999Author Commented:
yes i already did  ltrim(rtrim( mycol1) and ltrim(rtrim(mycol2)

but still it is  putting extra space.... pl help
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slightwv (䄆 Netminder) Commented:
>>yes i already did  ltrim(rtrim( mycol1) and ltrim(rtrim(mycol2)

I see that but you aren't using string concatenation.  Look at what I posted...

|| is a string concatenator in Oracle:

select 'Hello' || ' ' || 'World' from dual;
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at999Author Commented:
oh kkk thanks a lot let me try that
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slightwv (䄆 Netminder) Commented:
also, if all you are concerned with is spaces, no need for both an ltrim and rtrim.  There is a single trim function:

select trim(mycol1) || '|' ||  trim(mycol2)  || '|' from mytable1;
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Mark GeerlingsDatabase AdministratorCommented:
The formatting commands you use ("set..." ) are all SQL*Plus commands, not PL\SQL commands.  PL\SQL is Oracle's programming language for stored procedures.  SQL*Plus is Oracle's application or programmer's interface for running either SQL or PL\SQL commands, and the commands you are using here are simple SQL commands.

I've never needed to use "trim" in this setting, but that assumes the columns are VARCHAR2 columns.  If the columns you are selecting from are actually defined as CHAR columns (which are supported, but not as common in most Oracle databases) then you will need the "trim" operator to remove the trailing spaces.
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