On Tue, Apr 29, 2008 at 06:31:30AM +0530, Gurjeet Singh wrote:Inheritence of most constraints works, just not unique constraints. The
> On Mon, Apr 28, 2008 at 8:01 PM, Erik Jones <erik@xxxxxxxxxx> wrote:
> > Postgres doesn't yet handle inheritance of constraints from parent to
> > child tables via inheritance.
> Was it done by design or was it a limitation we couldn't get over?
problem of managing a unique index over multiple tables has not yet
been solved (it's a reasonably hard problem).
I completely agree with the difficulty of the problem. One of the advantages of breaking up your data into partitions, as professed by Simon (I think) (and I agree), is that you have smaller indexes, which improve performance. And maybe having one huge index managing the uniqueness across partitioned data just defeats the idea of data partitioning!
Best regards,
--
gurjeet[.singh]@EnterpriseDB.com
singh.gurjeet@{ gmail | hotmail | indiatimes | yahoo }.com
EnterpriseDB http://www.enterprisedb.com
Mail sent from my BlackLaptop device
