SQL> SELECT * FROM sqlplus_tbl;
A_DATE
---------
A_VERY_LONG_STRING
--------------------------------------------------------------------------------
A_ID
----------
20-JUN-13
Oracle. How to format a table containing description coulmns into spool output?
1.0000E+13
20-JUN-13
Oracle. How to format a table containing description coulmns into spool output?
2.0000E+13
A_DATE
---------
A_VERY_LONG_STRING
--------------------------------------------------------------------------------
A_ID
----------
20-JUN-13
Oracle. How to format a table containing description coulmns into spool output?
3.0000E+13
SQL> COLUMN a_very_long_string FORMAT A79
SQL> COLUMN a_id FORMAT 99999999999999;
SQL> SELECT * FROM sqlplus_tbl;
A_DATE A_VERY_LONG_STRING A_ID
--------- ------------------------------------------------------------------------------- ---------------
20-JUN-13 Oracle. How to format a table containing description coulmns into spool output? 10000000000000
20-JUN-13 Oracle. How to format a table containing description coulmns into spool output? 20000000000000
20-JUN-13 Oracle. How to format a table containing description coulmns into spool output? 30000000000000
Some small help: http://ss64.com/ora/syntax-sqlplus.html
Oracle: http://docs.oracle.com/cd/B19306_01/server.102/b14357/ch6.htm#i1081008 (SQL*Plus User's Guide and Reference)