can you explain a bit more about the use of new_value? Exactly where and
when it can be used? I know it's used for TTITLE but why do I need it here?
Can't I just reference &&c_myvar in the PL/SQL block?
-----Original Message-----
Sent: Wed, March 13, 2002 1:16 PM
To: ORACLE-L_at_fatcity.com
Cc: Bill.Magaliff_at_lendware.com
Don't use ACCEPT
e.g.
col c_myvar noprint new_value u_myvar
prompt Please enter value for myvar:
set term off feed off
select '&&1' c_myvar from dual;
set term on feed on
begin
if '&&u_myvar' is null then
dbms_output.put_line('myvar is null');
else
dbms_output.put_line('myvar is &&u_myvar');
end if;
end;
/
undef 1
Jared
"Magaliff, Bill" <Bill.Magaliff_at_lendware.com>
Sent by: root_at_fatcity.com
03/13/02 06:43 AM
Please respond to ORACLE-L
To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>
cc:
Subject: Passing in NULL via SQL ACCEPT
I'm writing an anonymous PL/SQL block that accepts various input from
SQL*Plus via ACCEPT commands. I then take the SQL input and use it in the
block, usually by assigning it to a PL/SQL variable.
If no value is specified on the ACCEPT line, it appears that nothing is
passed into PL/SQL, not even NULL. I tried using NVL(&&variable,0) to
reassign the supposed NULL to a 0, but the program returns an error that
nothing exists in place of &&variable.
Any ideas how to catch this null, which I want to be a viable option
(e.g.,
if the &&varible is NULL then perform certain operations).
Thanks much
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--
Author: Magaliff, Bill
INET: Bill.Magaliff_at_lendware.com
Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051
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Received on Thu Mar 14 2002 - 08:13:30 CST
