On Tue, Apr 29, 2008 at 11:47 AM, Martijn van Oosterhout <[EMAIL PROTECTED]> wrote:
> On Tue, Apr 29, 2008 at 06:31:30AM +0530, Gurjeet Singh wrote: > > On Mon, Apr 28, 2008 at 8:01 PM, Erik Jones <[EMAIL PROTECTED]> 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? > > Inheritence of most constraints works, just not unique constraints. The > 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, -- [EMAIL PROTECTED] [EMAIL PROTECTED] gmail | hotmail | indiatimes | yahoo }.com EnterpriseDB http://www.enterprisedb.com Mail sent from my BlackLaptop device
