| From: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: Collation order for btree-indexable datatypes |
| Date: | 2001-05-02 23:19:04 |
| Message-ID: | 200105022319.f42NJ4m24592@candle.pha.pa.us |
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| Lists: | pgsql-hackers |
> A closely related problem is that the "current time" special value
> supported by several of the date/time datatypes is inherently not
> compatible with being indexed, since its sort order relative to
> ordinary time values keeps changing. We had discussed removing this
> special case, and I think agreed to do so, but it hasn't happened yet.
>
> What I'm inclined to do is force consistency of the comparison operators
> now (for 7.1.1) and then remove "current time" for 7.2, but perhaps it'd
> be better to leave the whole can of worms alone until 7.2. Comments
> anyone?
Comparing NaN/Invalid seems so off the beaten path that we would just
wait for 7.2. That and no one has reported a problem with it so far.
--
Bruce Momjian | http://candle.pha.pa.us
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 853-3000
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