Re: Re: [BUGS] BUG #3965: UNIQUE constraint fails on long column values

Phil Frost wrote:
> On Mar 5, 2008, at 11:20 , Bruce Momjian wrote:
> 
> >
> > Does anyone think it is a good idea to document that our indexes  
> > cannot
> > index arbirarily-long strings?  I see nothing in the documentation now
> > about it.
> 
> +1
> 
> I never even knew. I'd be especially interested to hear about  
> details, like how long strings can be until they are not guaranteed  
> unique.

Part of the problem is we don't know the length --- it is the compressed
length that is limited, I think to 8k.

-- 
  Bruce Momjian          http://momjian.us
  EnterpriseDB                             http://postgres.enterprisedb.com

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