From: | Florian Weimer <fweimer(at)bfk(dot)de> |
---|---|
To: | Alexander Shulgin <ash(at)commandprompt(dot)com> |
Cc: | Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: Making TEXT NUL-transparent |
Date: | 2011-11-24 09:54:09 |
Message-ID: | 82r50xrgla.fsf@mid.bfk.de |
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Lists: | pgsql-hackers |
* Alexander Shulgin:
>> It's actually UTF-8 text, and some PostgreSQL functions are only
>> available for TEXT, but not BYTEA, e.g.:
>>
>> bfk_int=> SELECT '\x006500'::bytea ~ 'A';
>> ERROR: operator does not exist: bytea ~ unknown
>
> And how will those TEXT functions behave on a value with an embedded
> NUL?
They need to be audited and fixed if necessary. I'm not saying that
this would be a trivial change.
> Or is it not only about being able to *store* NULs in a text field?
No, the entire core should be NUL-transparent.
By the way, I refuse the notion that UTF-8 strings with embedded NULs
are "broken". I can't recall any other system which enforces UTF-8
well-formedness, but does not permit embedded NULs.
--
Florian Weimer <fweimer(at)bfk(dot)de>
BFK edv-consulting GmbH http://www.bfk.de/
Kriegsstraße 100 tel: +49-721-96201-1
D-76133 Karlsruhe fax: +49-721-96201-99
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