Re: Changing Column Order (Was Re: MySQL vs PostgreSQL.)

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От Bruce Momjian
Тема Re: Changing Column Order (Was Re: MySQL vs PostgreSQL.)
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Msg-id 200210160319.g9G3J9d18325@candle.pha.pa.us
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Ответ на Re: Changing Column Order (Was Re: MySQL vs PostgreSQL.)  (Tom Lane <tgl@sss.pgh.pa.us>)
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Tom Lane wrote:
> Bruce Momjian <pgman@candle.pha.pa.us> writes:
> > Jan Wieck wrote:
> >> When was char() fixed size?
> 
> > char() was fixed size only in that you could cache the column offsets
> > for char() becuase it was always the same width on disk before TOAST.
> 
> But that was already broken by MULTIBYTE.

Yes, I think there was conditional code that had the optimization only
for non-multibyte servers.  Of course, now multibyte is default.

--  Bruce Momjian                        |  http://candle.pha.pa.us pgman@candle.pha.pa.us               |  (610)
359-1001+  If your life is a hard drive,     |  13 Roberts Road +  Christ can be your backup.        |  Newtown Square,
Pennsylvania19073
 


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