Re: Deleting a COL

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От Fabrice Scemama
Тема Re: Deleting a COL
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Msg-id 38E76F7D.30248E46@gesnet.net
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Ответ на Re: Deleting a COL  ("John M. Flinchbaugh" <glynis@butterfly.hjsoft.com>)
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Personnally, i do this:
alter table xxx rename bad_col to ___scratchY;
where Y is a number.
Every day, just before the vacuum is done, a cron
will stop the daemon and make the operation being
proposed below, if ___scratchYs fields are found.
I suspect databases like SQL Server7
to announce delete row possible, but to content
themselves with renaming and hiding.

"John M. Flinchbaugh" wrote:
> 
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> On Sat, 1 Apr 2000, Antonio Lagnada wrote:
> > Does anyone know how to delete a column in PostgreSQL?
> > I cannot find the SQL command to do it.
> 
> i  don't think you can.  you can though create a new table with the
> desired fields, select or insert into it from the old table, drop the old
> table, then rename the new to the old.
> 
> ____________________}John Flinchbaugh{______________________
> | glynis@hjsoft.com         http://www.hjsoft.com/~glynis/ |
> ~~Powered by Linux: Reboots are for hardware upgrades only~~
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