On sön, 2010-05-30 at 11:05 +0900, Tatsuo Ishii wrote:
> > > Wait. This works fine for me with stock pg_trgm. local is C and
> > > encoding is UTF8. What version of PostgreSQL are you using? Mine is
> > > 8.4.4.
> >
> > This is in 9.0, because 8.4 doesn't recognize the \u escape syntax. If
> > you run this in 8.4, you're just comparing a sequence of ASCII letters
> > and digits.
>
> Hum. Still I prefer 8.4's behavior since anything is better than
> returning NaN. It seems 9.0 does not have any escape route for
> multibyte+C locale users.
I think you are confusing some things here. The \u escape syntax is for
string literals in general. The behavior of pg_trgm is still the same
in 8.4 and in 9.0. It's just easier in 9.0 to write out examples
relevant to the current problem.