| From: | Andrew Dunstan <andrew(at)dunslane(dot)net> |
|---|---|
| To: | David Fetter <david(at)fetter(dot)org> |
| Cc: | Simon Riggs <simon(at)2ndquadrant(dot)com>, Markus Schiltknecht <markus(at)bluegap(dot)ch>, NikhilS <nikkhils(at)gmail(dot)com>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: Auto Partitioning |
| Date: | 2007-04-04 19:26:44 |
| Message-ID: | 4613FBF4.4060109@dunslane.net |
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| Thread: | |
| Lists: | pgsql-hackers pgsql-patches |
David Fetter wrote:
> On Wed, Apr 04, 2007 at 10:07:39AM -0400, Andrew Dunstan wrote:
>
>> Simon Riggs wrote:
>>
>>> My hope is to have a mechanism to partition indexes or recognise
>>> that they are partitioned, so that a set of provably-distinct
>>> unique indexes can provide the exact same functionlity as a single
>>> large unique index, just without the management nightmare.
>>>
>> Will this address the fairly common data design problem where we
>> need to ensure that a given value is unique across several tables
>> (possibly siblings, possibly not)?
>>
>
> That would be where the provably-distinct part comes in, so yes.
>
>
That assumes you can provide some provably distinct test. In the general
case I have in mind that isn't so.
cheers
andrew
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