From: | Rob Sargent <robjsargent(at)gmail(dot)com> |
---|---|
To: | Adam Brusselback <adambrusselback(at)gmail(dot)com> |
Cc: | "pgsql-general(at)postgresql(dot)org" <pgsql-general(at)postgresql(dot)org> |
Subject: | Re: looking for a globally unique row ID |
Date: | 2017-09-15 18:49:35 |
Message-ID: | 2b934341-b546-a4d3-2316-0cd6ed1a6812@gmail.com |
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Thread: | |
Lists: | pgsql-general |
On 09/15/2017 12:45 PM, Adam Brusselback wrote:
>
> I cannot image a single postgres index covering more than one
> physical table. Are you really asking for that?
>
>
> While not available yet, that is a feature that has had discussion
> before. Global indexes are what i've seen it called in those
> discussions. One of the main use cases is to provide uniqueness
> across multiple tables, which would also allow things like foreign
> keys on partitioned tables.
I had a sneaking suspicion that partitioning would be the use-case, but
clearly there's at least the 'notion' of a single entity
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