Re: Selecting a constant question

From: Alvaro Herrera <alvherre(at)commandprompt(dot)com>
To: Dann Corbit <DCorbit(at)connx(dot)com>
Cc: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Gregory Stark <stark(at)enterprisedb(dot)com>, Martijn van Oosterhout <kleptog(at)svana(dot)org>, pgsql-hackers(at)postgresql(dot)org, Larry McGhaw <lmcghaw(at)connx(dot)com>
Subject: Re: Selecting a constant question
Date: 2007-06-11 22:43:37
Message-ID: 20070611224337.GE24760@alvh.no-ip.org
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Dann Corbit wrote:

> If the server bound the data as UNICODE, then it will tell me
> UNICODE(3). I know how big this will be.
>
> In the worst case scenario it will fit in 3*4 = 12 bytes.
>
> If the server is built without UNICODE enabled, then it will definitely
> fit in 3 bytes.

Unless it's some other multibyte encoding. And nowadays, the server is
always "unicode enabled". The stuff sent down the wire is unicode or
not depending on a configuration parameter.

--
Alvaro Herrera http://www.CommandPrompt.com/
PostgreSQL Replication, Consulting, Custom Development, 24x7 support

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