Re: Length of Varchar

Also, it only really works well for lengthening columns.  If you shorten
them, the old values will remain their original longer length.

---------------------------------------------------------------------------

Tom Lane wrote:
> Robert Treat <xzilla@users.sourceforge.net> writes:
> > There is a "gamblers lunch", for those willing to risk total system
> > failure and the lives of there first born child.
>
> Aw, it's not that dangerous ;-).  You can improve your odds considerably
> if you issue BEGIN; before you start dorking with the system tables,
> and COMMIT only after you're satisfied you have things right.  If you
> realize you blew it, ROLLBACK.
>
> Still, I'd recommend practicing on a scratch database before you do it
> for real.
>
>             regards, tom lane
>
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