Re: AW: [HACKERS] Re: atttypmod of 0 - Mailing list pgsql-hackers

From Thomas G. Lockhart
Subject Re: AW: [HACKERS] Re: atttypmod of 0
Date
Msg-id 34DBC472.8ABE81FA@alumni.caltech.edu
Whole thread Raw
In response to Re: AW: [HACKERS] Re: atttypmod of 0  (Bruce Momjian <maillist@candle.pha.pa.us>)
Responses Re: AW: [HACKERS] Re: atttypmod of 0  (Bruce Momjian <maillist@candle.pha.pa.us>)
List pgsql-hackers
> > > > Yes, I think to change atttypmod to default to -1 would be the right
> > > > thing,
> > > > since the empty string '' really has a length of 0,
> > > > We could think of -1 as: We don't know how long this field will be.
> > > > 0 would mean the field has 0 bytes.
> > >
> > > Do people want atttypmod at -1 at this time?  It will require a
> > > dump/reload.
> >
> > If it fixes problems, now is the time :)
>
> Well, right now, since it is not being used from anything by char() and
> varchar(), it is not a problem.  But it will have to be changed when we
> use it for other types.
>
> So do we change it now?

If it make things more self-consistant, now is the time :)

I would consider all of this related to or a followup on the char/varchar
work done earlier.

                                        - Tom


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