| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | "David E(dot) Wheeler" <david(at)kineticode(dot)com> |
| Cc: | pgsql-hackers(at)postgresql(dot)org, Zdenek Kotala <Zdenek(dot)Kotala(at)Sun(dot)COM>, Alvaro Herrera <alvherre(at)commandprompt(dot)com> |
| Subject: | Re: PATCH: CITEXT 2.0 |
| Date: | 2008-07-07 20:10:14 |
| Message-ID: | 22075.1215461414@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
"David E. Wheeler" <david(at)kineticode(dot)com> writes:
> So, the upshot is that the = and <> operators are not locale-aware,
> yes? They just do byte comparisons. Is that really the way it should
> be? I mean, could there not be strings that are equivalent but have
> different bytes?
We intentionally force such strings to be considered non-equal.
See varstr_cmp, and if you like see the archives from back when
that was put in.
The = and <> operators are in fact consistent with the behavior of
varstr_cmp (and had better be!); they're just optimized a bit.
regards, tom lane
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