Re: Declarative partitioning grammar

> > Personally I find the automatic partition idea intriguing, where you
> > only have to choose an expression that equates to one value (value
> > group) per partition (and possibly a way to derive a
> partition name).
>
> IMO, better go right to a fully automated approach. Or why would you
> need partition names in such a case?

Yes, I tend to aggree on that, with the exception that I think the
partition borders should be declarative expressions (equal in syntax to
a GROUP BY clause).

Names are only for a short and crisp way to identify the partition for
the following operations:
- drop/detach data in a partition (as opposed to a normal delete)
- move to/create in other tablespace (I don't value that one, but others
have)
- reorg, create index

The drop can probably be done straight from a normal delete (a problem
is RI and triggers though).
The normal delete would need to have the smarts, that a delete covers a
whole partition, and thus mark the whole partition dead instead of it's
individual rows.

A detach would need some extra syntax, but could also be based on a
where clause that specifies which partitions are to be detached. I am
not so sure about how to usefully do the reorg part with where clauses.

Andreas