Oracle Database Interview Question:

How To Save Query Output to a Local File?

Submitted by: Administrator

Normally, when you run a SELECT statement in SQL*Plus, the output will be displayed on your screen. If you want the output to be saved to local file, you can use the "SPOOL fileName" command to specify a local file and start the spooling feature. When you are done with your SELECT statement, you need to close the spool file with the "SPOOL OFF" command. The following tutorial exercise gives you a good example:

SQL> connect HR/retneclgg

SQL> SET HEADING OFF
SQL> SET FEEDBACK OFF
SQL> SET LINESIZE 1000
SQL> SPOOL empemployees.lst
SQL> SELECT * FROM EMPLOYEES;
......
SQL> SPOOL OFF

You should get all records in employees.lst with fixed length fields.
Submitted by: Administrator