Difference between varchar and text?

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От Moshe Jacobson
Тема Difference between varchar and text?
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Msg-id CAJ4CxLmKamEBW8JSQR2MT+6SrjX+fP5zi8nUf5kQ=7Ah83S4gA@mail.gmail.com
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Ответы Re: Difference between varchar and text?  (Merlin Moncure <mmoncure@gmail.com>)
Re: Difference between varchar and text?  (John R Pierce <pierce@hogranch.com>)
Re: Difference between varchar and text?  ("Joshua D. Drake" <jd@commandprompt.com>)
Re: Difference between varchar and text?  ("David Johnston" <polobo@yahoo.com>)
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Is there any practical difference between defining a column as a varchar(n) vs. a varchar vs. a text field? 

I've always been under the impression that if I am wanting to index a varchar column, it is better to set a maximum length. Is this correct?
But more importantly, what's the practical difference between varchar with no limit and text?

Thanks, and apologies if this is a FAQ...

Moshe

--
Moshe Jacobson
Nead Werx, Inc. | Senior Systems Engineer
2323 Cumberland Parkway, Suite 201 | Atlanta, GA 30339
moshe@neadwerx.com | 
www.neadwerx.com

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