On 2019-Jun-06, Alex V. wrote:
> I think that your position about primary keys in partitional tables is
> not right.
>
> If we see regular table, one-field primary key is cross-table unique.
> In partitional tables for users view we MUST also seen unique
> one-field primary key because this is user requirement and another
> keys can destroy logic between regular and partitional tables and
> functionality of partitioning becomes useless.
> For administrators of table we not-MAY, but MUST see one-field unique
> primary key in cross-table realisation.
> All another realizations are plugging holes in a hurry and non-logical
> at global review of engine.
If you are saying that you think that Postgres should support primary
keys that don't necessarily overlap partition keys, then I agree with
you. Please send a patch to implement that capability.
--
Álvaro Herrera https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services