RE: Happy column adding (was RE: [HACKERS] Happy column dropping)

> -----Original Message-----
> From: owner-pgsql-hackers@postgreSQL.org
> [mailto:owner-pgsql-hackers@postgreSQL.org]On Behalf Of Don Baccus
> 
> At 11:55 AM 1/25/00 +0100, Peter Eisentraut wrote:
> >On Tue, 25 Jan 2000, Hiroshi Inoue wrote:
> >
> >> Even default is not allowed in ADD COLUMN now. 
> >> There may be other reasons why they aren't allowed.
> >
> >It's not a matter of *allowed*, it's a parsing deficiency. The fact that
> >there was a default declared gets silently ignored. If y'all allow ;) I
> >would like to fix that (have already started a bit) by perusing the code
> >in parse_func.c:transformCreateStmt and do the same for the alter table
> >add column part. Maybe and add/drop constraint will come out in 
> the end as
> >well.
> 
> However, heap_getattr still won't see the default since it simply
> checks to see of the attribute number falls off the end of the
> tuple and then returns null.
>

Sorry,the following question might be already answered but too
many postings for me.

Do we have to refer default value for already inserted rows ?
Doesn't 'default' have its meaning only when rows are about to be
inserted ?

Regards.

Hiroshi Inoue
Inoue@tpf.co.jp