RE: CODE to trap an update statement in PL*SQL that updates 0

From: Post, Ethan <epost_at_kcc.com>
Date: Thu, 09 Aug 2001 15:20:30 -0700
Message-ID: <F001.00366759.20010809153039@fatcity.com>

Todd,

Check out the PL/SQL guide under "Using Cursor Attributes".

http://www.oradoc.com/ora817/appdev.817/a77069/05_ora.htm#42685

>-----Original Message-----
>From: Thompson, Todd [mailto:tthompso_at_bcharrispub.com]
>Sent: Thursday, August 09, 2001 3:56 PM
>To: Multiple recipients of list ORACLE-L
>Subject: CODE to trap an update statement in PL*SQL that updates 0 rows
>
>
>Hello everyone.......... I'm trying to trap the case where an
>update in
>PL*SQL updates 0 rows. I've tried using the "returning into"
>clause hoping
>it would put null in the returning field - but it seems to retain the
>previous updates value. Can anyone help??
>
>SQL*Plus: Release 8.1.7.0.0 -
>
>
>drop table test;
>create table test(col1 number);
>insert into test values (1);
>insert into test values (3);
>insert into test values (5);
>insert into test values (7);
>insert into test values (9);
>declare
>v_key pls_integer;
>cursor c is select 1 as key from dual
> union
> select 2 as key from dual
> union
> select 3 as key from dual;
>begin
>for x in c loop
>begin
>v_key:=null;
>Update test set col1=x.key
>where col1=x.key
>returning col1 into v_key;
>---
>--- Put trap code here when 0 rows updated
>--
>dbms_output.put_line('curr'|| x.key||' '|| v_key);
>end;
>end loop;
>end;
>/
>
>
>Table dropped.
>
>
>Table created.
>
>
>1 row created.
>
>
>1 row created.
>
>
>1 row created.
>
>
>1 row created.
>
>
>1 row created.
>
>curr1 1
>curr2 1
>curr3 3
>
>PL/SQL procedure successfully completed.
>
>Todd Thompson
>
>Architecture and Technology Team
>Harris Publishing
>6363 Center Drive, Norfolk VA, 23502
>Email: tthompso_at_bcharrispub.com <mailto:tthompso_at_bcharrispub.com>
>
>
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>end
>--
>Please see the official ORACLE-L FAQ: http://www.orafaq.com
>--
>Author: Thompson, Todd
> INET: tthompso_at_bcharrispub.com
>
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Author: Post, Ethan
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Received on Thu Aug 09 2001 - 17:20:30 CDT