Re: PL/pgSQL functions - text / varchar - havy performance

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От Bill Moran
Тема Re: PL/pgSQL functions - text / varchar - havy performance
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Msg-id 3F4F7275.5030203@potentialtech.com
обсуждение исходный текст
Ответ на Re: PL/pgSQL functions - text / varchar - havy performance  (Andrew Sullivan <andrew@libertyrms.info>)
Ответы Re: PL/pgSQL functions - text / varchar - havy performance  (Andrew Sullivan <andrew@libertyrms.info>)
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Andrew Sullivan wrote:
> On Fri, Aug 29, 2003 at 10:46:44AM -0400, Bill Moran wrote:
>
>>Postgres has to convert the text to a varchar before it can actually
>>do anything.  It's possible (though I'm not sure) that it has to
>>do the conversion with each record it looks at.
>
> It does?  According to the docs, varchar is just syntactic sugar for
> text.  In fact, text and varchar() are supposed to be exactly the
> same.

Really?  Well, if I'm wrong, I'm wrong.  Wouldn't be the first time.

Have any explanation as to why that function is so slow?

--
Bill Moran
Potential Technologies
http://www.potentialtech.com


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