Ответ: how can i view deleted records? - Mailing list pgsql-general

From Dan Black
Subject Ответ: how can i view deleted records?
Date
Msg-id 27f606250604292206p3d346cb4qee87d44796d83d41@mail.gmail.com
Whole thread Raw
In response to Re: how can i view deleted records?  (Steve Atkins <steve@blighty.com>)
List pgsql-general
Thanks.  I  thought  that  there  are some  standard  utilities  or
sql  request  in  postgres  to  view  deleted  or  modified  tuples.

2006/4/30, Steve Atkins <steve@blighty.com>:
>
> On Apr 29, 2006, at 4:18 PM, Robby Russell wrote:
>
> >
> > On Apr 29, 2006, at 12:49 PM, Dan Black wrote:
> >
> >> Hello,  everybody!
> >> How  can  I  view  deleted  records  in  table?
> >
> > SELECT * FROM recycle_bin;
> >
> > ;-)
> >
> > Just kidding... once you delete your records... they are gone.
>
> That's.... not true.
>
> Deleted (or modified) records don't go away until the space
> they use is recycled by the VACUUM command.
>
> However, there's no support in postgresql for any sort of
> "time travel", including viewing deleted tuples. The data
> is there on the disk, but there is no clean way to view it
> via the database.
>
> It's certainly not something a DBA should even think about
> (outside of security issues) but deleted tuples are available
> in a forensics situation, as long as vacuum hasn't been run.
>
> Cheers,
>    Steve
>
>
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--
Verba volent, scripta manent
Dan Black

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