Re: Progress report on locale safe LIKE indexing

From: Peter Eisentraut <peter_e(at)gmx(dot)net>
To: Hiroshi Inoue <Inoue(at)tpf(dot)co(dot)jp>
Cc: PostgreSQL Development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Progress report on locale safe LIKE indexing
Date: 2001-08-21 15:46:26
Message-ID: Pine.LNX.4.30.0108211726350.856-100000@peter.localdomain
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Hiroshi Inoue writes:

> If your solution is short-lived, your change would be not
> only useless but also harmful. So I expect locale-aware
> people to confirm that we are in the right direction.

I am a bit confused here. We have tinkered with LIKE indexing at least a
year. Now that a solution is found that *works*, it is claimed that it is
harmful because LIKE was doing the wrong thing in the first place. OTOH,
I have not seen anyone independently claim that LIKE is wrong, nor do I
see anyone proposing to actually change it. If we install my fix now we
have a system that works better than the previous release with no change
in semantics. If someone wants to change LIKE at a later point, reverting
my changes would be the least part of that work.

--
Peter Eisentraut peter_e(at)gmx(dot)net http://funkturm.homeip.net/~peter

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