Re: DOUBT - Oracle command to REPLACE data

From: Robert Freeman <robertgfreeman_at_yahoo.com>
Date: Sat, 2 Jul 2011 14:20:55 -0700 (PDT)
Message-ID: <1309641655.2192.YahooMailRC_at_web113203.mail.gq1.yahoo.com>

Are you trying to do the equivalent of bitwise operations here? If so, I'd change your approach altogether and use actually bit manipulations using the functions that Oracle provides. I've used them for security/role/grouping designs quite successfully in the past and it's much faster than what you may be trying to do.

Robert

 Robert G. Freeman
Master Principal Consultant, Oracle Corporation, Oracle ACE Author of various books on RMAN, New Features and this shorter signature line. Blog: http://robertgfreeman.blogspot.com

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From: Eriovaldo Andrietta <ecandrietta_at_gmail.com> To: ORACLE-L <oracle-l_at_freelists.org> Sent: Sat, July 2, 2011 12:46:21 PM
Subject: DOUBT - Oracle command to REPLACE data

Hi Friends,

   I have the following issue:

   I need to store a column VARCHAR2(45).

   If I am inserting data for first time I can , for example, save something like this:

      111110000000000000000000000000000000000000000

   When the line exists recorded in the table with the content above, and during my process I must updated the following, considering only character 1:

      000000000000000000000000000000101010101010100

   The final result must be as below, replacing only the character 1:

      111110000000000000000000000000101010101010100
 
  I know that I can do it:
     WHILE X < Y
       LOOP
         FINAL COLUMN := SUBSTR(N) || 1 || ....
      END LOOP;

 But is there any other way to do it, like regular expression or another command / instruction ?

Regards
Eriovaldo

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Received on Sat Jul 02 2011 - 16:20:55 CDT