RE: Are PL/SQL variable values runtime only?
- From: "Ric Van Dyke" <ric.van.dyke@xxxxxxxxxx>
- To: <rjoralist@xxxxxxxxxxxxxxxxxxxxx>, "Oracle L" <oracle-l@xxxxxxxxxxxxx>
- Date: Wed, 22 Jul 2009 13:43:17 -0500
Hi Rich,
The short answer is yes. The life of a variable is only within the
block that it's defined. You can create variables in a package header
that have a more global like life span. Although I'm not sure I totally
understand what you are asking so maybe I'm off the mark here.
I think this is covered in the scoping rules of the PL/SQL guide.
Ric Van Dyke
-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Rich Jesse
Sent: Wednesday, July 22, 2009 12:29 PM
To: Oracle L
Subject: Are PL/SQL variable values runtime only?
Hey all,
In 10.1.0.5.0, I have a procedure like this:
CREATE OR REPLACE PROCEDURE bleah AS
v_test VARCHAR2(50) := my_pkg.my_value('ABC');
BEGIN
DBMS_OUTPUT.PUT_LINE(v_test);
END bleah;
/
...where "my_pkg.my_value" is a function that reads a table and returns
a
column value of a row based on the supplied parameter, in this case
'ABC'.
From testing, I can change the column value for row 'ABC' in that table
(and
COMMIT) and the above procedure will reflect the change.
I would have suspected the v_test variable value to be retrieve at
compile
time, but I suppose that would be a maintenance nightmare since an
invalid
referenced object forces a recompile, right?
Also the CONSTANT keyword in the variable declaration does not appear to
effect this behavior.
Is this documented somewhere? I've poked around the PL/SQL User's
Guide,
but can't find it.
TIA,
Rich
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