| From: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
|---|---|
| To: | Manfred Koizar <mkoi-pg(at)aon(dot)at> |
| Cc: | Sean Chittenden <sean(at)chittenden(dot)org>, "Marc G(dot) Fournier" <scrappy(at)postgresql(dot)org>, Vivek Khera <khera(at)kcilink(dot)com>, pgsql-general(at)postgresql(dot)org |
| Subject: | Re: State of Beta 2 |
| Date: | 2003-09-12 14:22:32 |
| Message-ID: | 200309121422.h8CEMWB14200@candle.pha.pa.us |
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| Lists: | pgsql-general |
Manfred Koizar wrote:
> On Thu, 11 Sep 2003 14:24:25 -0700, Sean Chittenden
> <sean(at)chittenden(dot)org> wrote:
> >Agreed, but if anyone has a table with close to 1600 columns in a
> >table...
>
> This 1600 column limit has nothing to do with block size. It is
> caused by the fact that a heap tuple header cannot be larger than 255
> bytes, so there is a limited number of bits in the null bitmap.
Are you sure. Then our max would be:
255 * 8 = 2040
--
Bruce Momjian | http://candle.pha.pa.us
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 359-1001
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