Re: Difference between varchar and text?

On Nov 17, 2012, at 20:43, John R Pierce <pierce@hogranch.com> wrote:

> On 11/17/12 5:37 PM, David Johnston wrote:
>> On Nov 17, 2012, at 20:11, Jasen Betts<jasen@xnet.co.nz>  wrote:
>>> >On 2012-11-05, Moshe Jacobson<moshe@neadwerx.com>  wrote:
>>>> >>But more importantly, what's the practical difference between varchar with
>>>> >>no limit and text?
>>> >text is immeasurably faster.
>> If it cannot be measured then how can you claim this?
>>
>> Everything I've heard says there is no difference between "varchar" and "text" as they are simply synonyms for the
sameunderlying implementation.  What makes you think differently? 
>
> I think he meant a tiny tiny bit faster, primarily due to not having to validate the length.
>
Maybe... But I would presume a "varchar with no limit" does not validate length...