Обсуждение: Dropping Columns

Any pointers?
-
- Thomas Swan                                   
- Graduate Student  - Computer Science
- The University of Mississippi
-
- "People can be categorized into two fundamental
- groups, those that divide people into two groups
- and those that don't."

On Mon, Aug 21, 2000 at 06:32:13PM -0500, Thomas Swan wrote:
> 
> How nasty would dropping columns be?
> 
> I've just now started going through the source and am trying to find where 
> it would fit in... if it could be done without a nightmare.
> 
> Any pointers?

Long discussion in February, and again in June in HACKERS. (Hmm, the
new User's Lounge seems to have gone in, but now we've no links to
mail archives. Ah, here's a bookmark I can use to get in.)

Here's one pointer:

http://www.postgresql.org/mhonarc/pgsql-hackers/2000-06/msg00324.html

The search feature on the front page will search the mailing lists for
you, it's just a bit slow.

Oh, look in  <your pgsql source tree>/doc/TODO.detail/drop

Looks like the thread from HACKERS is in there.

Ross
-- 
Ross J. Reedstrom, Ph.D., <reedstrm@rice.edu> 
NSBRI Research Scientist/Programmer
Computer and Information Technology Institute
Rice University, 6100 S. Main St.,  Houston, TX 77005

On Tue, 22 Aug 2000, Ross J. Reedstrom wrote:

> On Mon, Aug 21, 2000 at 06:32:13PM -0500, Thomas Swan wrote:
> > 
> > How nasty would dropping columns be?
> > 
> > I've just now started going through the source and am trying to find where 
> > it would fit in... if it could be done without a nightmare.
> > 
> > Any pointers?
> 
> Long discussion in February, and again in June in HACKERS. (Hmm, the
> new User's Lounge seems to have gone in, but now we've no links to
> mail archives. Ah, here's a bookmark I can use to get in.)
> 
> Here's one pointer:
> 
> http://www.postgresql.org/mhonarc/pgsql-hackers/2000-06/msg00324.html

For now you can get there from the general info page in the user's 
lounge.  I'm working up the search page now.

> 
> The search feature on the front page will search the mailing lists for
> you, it's just a bit slow.
> 
> Oh, look in  <your pgsql source tree>/doc/TODO.detail/drop
> 
> Looks like the thread from HACKERS is in there.
> 
> Ross
> 

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-----Original Message-----
From: Thomas Swan

> How nasty would dropping columns be?

I have an solution which uses 2(logical/physical) attribute numbers.
However I'm not satisfied with it.

It isn't so clean as I expected.
It breaks backward compatibility ... etc.

Regards.

Hiroshi Inoue
Inoue@tpf.co.jp