Re: Auto creation of Partitions

Jim C. Nasby wrote:
> On Thu, Mar 08, 2007 at 01:52:27PM +0530, NikhilS wrote:
>>> I think it'd be great to make adding and removing partitions as
>>> simple as ALTER TABLE. I don't think that DELETE should be the
>>> mechanism to drop a partition, though. Again, DML statements
>>> shouldn't be performing DDL.
>>
>> Since partition is inheritance-based, a simple DROP or "NO INHERIT" will do
>> the job to deal with the partition. Do we want to reinvent additional syntax
>> when these are around and are documented?
>
> Well, if the syntax for adding a new partition eventually ends up as
> ALTER TABLE ADD PARTITION, then it would make more sense that you remove
> a partition via ALTER TABLE DROP PARTITION.

This follows on from the suggestion I made - taken along the lines of
the subject "auto creation of partitions" where I suggested the syntax
of partition check(month of mydatecol) and have a new partition created
as data was entered. With this scenario dropping the partition when it
was empty would complement the creation of a new partition as needed.

Given that there seems to be no real support of going with "auto
maintenance" were new partitions are added as needed, then the auto
dropping of empty partitions would also not apply.

Leaving us with only specific add partition / drop partition commands.
And have the parent table pick up rows not matching any partition check
criteria.

--

Shane Ambler
pgSQL(at)Sheeky(dot)Biz

Get Sheeky @ http://Sheeky.Biz