Re: PostgreSQL 8.1 vs. MySQL 5.0? - Mailing list pgsql-general

--- Scott Marlowe <smarlowe@g2switchworks.com> wrote:

> On Wed, 2005-10-05 at 23:41, Tom Lane wrote:
> > "Joshua D. Drake" <jd@commandprompt.com> writes:
> > > On Wed, 2005-10-05 at 18:37 -0700, CSN wrote:
> > >> Just so I know (and am armed ;) ), are there
> any new
> > >> comparable features in MySQL 5.0 that aren't in
> > >> PostgreSQL up to the forthcoming 8.1? AFAIK, PG
> just
> > >> lacks updatable views (which are on the TODO).
> > >>
> > >> MySQL 5.0 new features
> > >>
>
http://dev.mysql.com/doc/mysql/en/mysql-5-0-nutshell.html
> >
> > > Well "IF" they are being completely honest, we
> don't have XA
> > > and we don't have an "instance manager" but of
> course who really needs
> > > one?
> >
> > We don't have XA built into the backend, but if
> I've been following the
> > jdbc list accurately, there's fairly complete XA
> support for the jdbc
> > driver, which should be available in the 8.1
> release.
> >
> > More generally, it's worth making the point that a
> lot of MySQL's "brand
> > new in 5.0" features have been in Postgres for a
> *long* time, and are
> > therefore likely to be both more stable and
> better-performing than
> > MySQL's first cut at them.
> >
> > (BTW, it sure seems like MySQL 5.0 has been a
> heckuva long time in
> > getting to release status.  Has anyone here been
> following that
> > process?  Why's it been so painful?)
>
> I've been beta testing 5.0.xx releases and reporting
> bugs.  They're
> pretty fast at fixing individual bugs.
>
> Not sure why it's taken so long, really.  Maybe they
> were trying to do
> too much at once in one release?
>
> But what really bugs me is that some things that ARE
> bugs simply aren't
> getting fixed and probably won't.  Specifically,
> while mysql understands
> fk references made at a table level, it simply
> ignores, without error,
> warning, or notice, fk references made in a column.
> arg...  Very
> frustrating.  If they just didn't support that
> syntax it would be much
> less bothersome, since I'd try it, get an error, and
> try the other
> syntax.  Instead, I spent an afternoon trying to
> figure out why it
> wasn't doing ANYTHING when I declared an FK
> reference at column level.
>
> Things like that are, sadly, kinda rampant in MySQL.
>

What's the difference between a fk at the table level
vs. column level? The only fk's I've used are one
column referencing another.

CSN




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