Spooling column headers correctly

Question

Hi,
Im trying spooling a file in DB with below mentioned details.
SET SERVEROUTPUT OFF
set heading on
SET PAUSE OFF
SET FEED OFF
SET PAGES 0
SET LINE 5000
SET VERI OFF
SET TERM OFF
SET TERMOUT OFF
SET TIME OFF
SET UNDERLINE OFF
SET COLSEP ','
SET ECHO OFF
SET TRIM ON
SET TRIMOUT ON
SET TRIMSPOOL ON
set newpage none
spool ${OUTPUT_PATH}/${REPORT_NAME}/${REPORT}_${START_DATE}.csv
@${SCRIPT_PATH}/${REPORT_NAME}/my_query.sql
spool off
exit;
EOF
file .sql has 20 odd columns.
When file is spooled, it shows no columns headers at the top, why is it happening, I dont want to spool column headers separately.

Answer 1

but is it possible to change the format of multiple columns in one goNo, not possible. You will have to write 20 column format <column_names> A<N> for all the required columns. Here column name and column alias both are same i.e. column format command works same for column alias.
also tell me one thinng why "set heading on" does not work with "set pagesize 0"?The best thing might be to SET PAGESIZE 0, which turns off paging. Unfortunately, that turns off the automatic headers, too, so you'll have to supply your own header, manually, like this:
Frank @ Column headers in SQLPLUS query