Oracle-L: Re: SQL Plus Default Value for &1 Help

From: <Jared.Still_at_radisys.com>
Date: Fri, 18 Oct 2002 14:03:41 -0800
Message-ID: <F001.004EDDD9.20021018140341@fatcity.com>

Ethan,

I think you're stuck here.

There isn't any memory structure in sqlplus that I'm aware of that will allow you to check for the existence of variables passed on the command line, without actually checking the variable itself.

Below is the method I use for passing command line variables to sqlplus, and prompting the user if they don't exist.

column ctest noprint new_value utest
prompt Enter the value:
set feed off echo off term off
select '&1' ctest from dual;
set feed on term on

select '&utest' from dual;

I don't see any way to directly supply a default value in sqlplus, though it
would really be cool if someone else has a way to do so in sqlplus.

This would likely require something like expect, or Perls Telnet module to catch user input, and timeout if not supplied in a timely manner.

Jared

"Post, Ethan" <Ethan.Post_at_ps.net>
Sent by: root_at_fatcity.com
10/18/2002 02:23 PM
Please respond to ORACLE-L

        To:     Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>
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        Subject:        SQL Plus Default Value for &1 Help

Anyone got an example for the following...

I have a SQL Script that expects &1 passed into it, however, if &1 is not supplied I would like to use a default value and not stop to prompt the user. I am playing around with new_value and select nvl('&1','foo') from dual...etc...and nothing seems to be working.

Thanks,
Ethan Post
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Author: Post, Ethan
INET: Ethan.Post_at_ps.net

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