Re: regexp on null

On Fri, Sep 10, 2010 at 10:25:55AM -0700, Richard Broersma wrote:
> On Fri, Sep 10, 2010 at 9:56 AM, Gauthier, Dave <dave.gauthier@intel.com> wrote:
> > Ya, I kinda knew about these approaches.  The problem ahs to do
> > with novice users who don't know about coalesce or or;ing a check
> > ofr nulls.  I was hoping there was some special regexp expression
> > that would match to a null.
>
> Perhaps the easiest was to help such users is to make the column(s)
> in question NOT NULL DEFAULT ''.

I think it's a very, very bad idea to make a default like that.  I'm
aware that it's common in one of those Oracle properties, but it needs
to stay confined there.

Cheers,
David.
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