Re: Help request to improve function performance

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От Karsten Hilbert
Тема Re: Help request to improve function performance
Дата
Msg-id 20090423090059.GB4500@merkur.hilbert.loc
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Ответ на Re: Help request to improve function performance  (Seref Arikan <serefarikan@kurumsalteknoloji.com>)
Ответы varchar vs. text + constraint/triggers was: Help request to improve function performance  (Ivan Sergio Borgonovo <mail@webthatworks.it>)
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On Thu, Apr 23, 2009 at 12:02:13AM +0100, Seref Arikan wrote:

> I have a set of dynamically composed objects represented in Java, with
> string values for various attributes, which have variable length. In case
> you have suggestions for a better type for this case, it would be my
> pleasure to hear about them.

Seref, he's suggesting you use TEXT instead of
VARCHAR(something). In PG it's actually usually *less*
overhead to use the unbounded text datatype (no length check
required).

Length checks mandated by business logic can be added by
more dynamic means -- check constraints, triggers, etc which
allow for less invasive change if needed.

Karsten
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