| From: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | "Jeroen Ruigrok/asmodai" <asmodai(at)wxs(dot)nl>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: constraint modification on todo list |
| Date: | 2003-09-08 22:48:09 |
| Message-ID: | 200309082248.h88Mm9C11379@candle.pha.pa.us |
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| Lists: | pgsql-hackers |
Tom Lane wrote:
> Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> writes:
> > I assume MODIFY would allow you to alter the constraint without
> > re-checking all the rows, as would be required by DROP/ADD. However, if
> > you are modifying the constraint, wouldn't we have to recheck all the
> > rows anyway.
>
> Yeah. Rod's point about altering foreign key action settings is a good
> one, but other than that I don't see a whole lot of scope for shortcuts.
Agreed. Added to TODO:
o Allow ALTER TABLE to change constraint deferrability and actions
--
Bruce Momjian | http://candle.pha.pa.us
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 359-1001
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