How to find out that a record is empty or null

hi
how can i find out that a record is empty or null.
in other languages when a object or record is not initialized it will be null.
after initialization how can i find out its values are null. so far i tried this
declare
v_r_emp emp%rowtype := null;
BEGIN
     if (v_r_emp is null) then
     dbms_output.put_line('record is not initialized');
     end if;
END;
it seems in plsql we can assign null but cannot compare it with null clause why? if we are able of assign null we must should about to compare it with null too.
also how record can be made empty. how can we find out that a record variable is empty
please help me to understand the concept
thanks

You need to check every element in the record.

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How to find out that particular structure is used in which tables

Hello Friends,
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Dear,
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Hi ,
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931510     7-Nov-08     31-Dec-12     122     (null)     (null)     (null)     3978     1     (null)     14402     (null)     220150     (null)     734956     (null)     (null)     476     (null)     (null)     (null)     (null)     2     E     Y     (null)     100035417-2     (null)     (null)     (null)     45948739     (null)     (null)     (null)     (null)     (null)     (null)     (null)     868007     (null)     (null)     (null)     (null)     449     (null)     (null)     (null)     (null)     (null)     (null)     (null)     (null)     (null)     (null)     (null)     (null)     (null)     (null)     (null)     (null)     (null)     (null)     (null)     (null)     (null)     (null)     (null)     (null)     (null)     (null)     (null)     (null)     (null)     (null)     (null)     (null)     (null)     (null)     (null)     (null)     (null)     (null)     (null)     (null)
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Hello all,
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Kind regards
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Moderator message: FAQ, please search for previous discussions of similar topics.
example: "SELECT SINGLE" vs. "SELECT UP TO 1 ROWS"
Moderator message: Please Read before Posting in the Performance and Tuning Forum
Edited by: Thomas Zloch on Aug 11, 2011 5:06 PM

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SQL*Plus: Release 10.2.0.4.0 - Production on Thu Aug 27 23:24:40 2009
Copyright (c) 1982, 2007, Oracle. All Rights Reserved.
Connected to an idle instance.
SQL> startup
ORACLE instance started.
Total System Global Area 880803840 bytes
Fixed Size                  2087992 bytes
Variable Size             197133256 bytes
Database Buffers          675282944 bytes
Redo Buffers                6299648 bytes
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         2 YES            2063978 27-AUG 23:24:48
         3 YES            2063978 27-AUG 23:24:48
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Fixed Size                  2087992 bytes
Variable Size             197133256 bytes
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I have come along this post so many times that now that I have solved it myself I will have to reply to it, even after 5 years.
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Go to Solution.

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