David E. Wheeler wrote:
> On Sep 24, 2009, at 6:24 AM, pg@thetdh.com wrote:
>
>> In a context using normalization, wouldn't you typically want to
>> store a normalized-text type that could perhaps (depending on locale)
>> take advantage of simpler, more-efficient comparison functions?
>
> That might be nice, but I'd be wary of a geometric multiplication of
> text types. We already have TEXT and CITEXT; what if we had your NTEXT
> (normalized text) but I wanted it to also be case-insensitive?
Actually, I don't think it's necessarily a good idea at all. If a user
inputs a perfectly valid piece of UTF8 text, we should be able to give
it back to them exactly, whether or not it's in normalized form. The
normalized forms are useful for certain comparison purposes, but they
don't affect the validity of the text. CITEXT doesn't mangle what is
stored, just how it's compared.
cheers
andrew