Re: NOT NULL constraints on range partition key columns

On 2017/05/16 4:29, Robert Haas wrote:
> On Mon, May 15, 2017 at 9:12 AM, Amit Kapila <amit.kapila16@gmail.com> wrote:
>> Can't we allow NULL to get inserted into the partition (leaf
>> partition) if the user uses the partition name in Insert statement?
> 
> That would be terrible behavior - the behavior of tuple routing should
> match the enforced constraints.
>
>> For root partitions, I think for now giving an error is okay, but once
>> we have default partitions (Rahila's patch), we can route NULLS to
>> default partition.
> 
> Yeah, that's exactly why I think we should make the change Amit is
> proposing here.  If we don't, then we won't be able to accept NULL
> values even after we have the default partitioning stuff.

Attached is a patch for consideration.  There are 2 actually, but maybe
they should be committed together if we decide do go with this.

Thanks,
Amit