Re: int4 to varchar length (pgadmin3) issue

[<operationsengineer1(at)yahoo(dot)com>]

> > iow, i want to limit the the newly converted
> varchar
> > revision to 2 characters, but can't due to the
> grayed
> > out boxes in pgadmin3.
> 
> I saw this example at:
>
http://www.postgresql.org/docs/8.1/interactive/sql-altertable.html
> 
> ALTER TABLE distributors ADD CONSTRAINT zipchk CHECK
> (char_length(zipcode) = 5);
> 
> This should do what you want.
> 
> Regards,
> 
> Richard Broersma Jr.
> 

Richard, thank you.  i think this does what i want,
however, i want to understand a bit more.

this is an additional defined constraint, correct?  is
this constraint added automagically by pgadmin when
you  enter a length value or is this a different
method to achieve a similar result?

tia..

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