| From: | "Zeugswetter Andreas ADI SD" <ZeugswetterA(at)spardat(dot)at> |
|---|---|
| To: | "Luke Lonergan" <llonergan(at)greenplum(dot)com>, "Simon Riggs" <simon(at)2ndquadrant(dot)com>, "NikhilS" <nikkhils(at)gmail(dot)com> |
| Cc: | "Peter Eisentraut" <peter_e(at)gmx(dot)net>, <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Auto creation of Partitions |
| Date: | 2007-03-07 16:45:51 |
| Message-ID: | E1539E0ED7043848906A8FF995BDA57901D42D80@m0143.s-mxs.net |
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| Lists: | pgsql-hackers pgsql-patches |
> > What is really needed is a data structure that allows range
partitions
> > to be accessed more efficiently. This could make adding partitions
and
> > deciding in which partition a specific value goes an O(logN)
operation.
>
> I think we need to re-evaluate the inheritance mechanism for
> partitioning and implement something much closer to the
> storage layer, similar to Oracle.
>
> Having the constraint exclusion occur in the planner is not
> flexible enough to allow more advanced solutions.
Whoa, do you have anything to back that up ?
You would need to elaborate what you actually mean, but I think it is
moot.
Sure, the constraint technique can be further extended (e.g. during
runtime), but imho the approach is very good.
Andreas
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