From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
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To: | "Karsten Hilbert" <Karsten(dot)Hilbert(at)gmx(dot)net> |
Cc: | pgsql-general(at)postgresql(dot)org |
Subject: | Re: inheritance. more. |
Date: | 2008-04-30 15:12:47 |
Message-ID: | 18973.1209568367@sss.pgh.pa.us |
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Lists: | pgsql-general |
"Karsten Hilbert" <Karsten(dot)Hilbert(at)gmx(dot)net> writes:
>> And maybe having one huge index managing the uniqueness across partitioned
>> data just defeats the idea of data partitioning!
> Except when you want uniqueness across all partitions.
Well, the point was that if the partitioning arrangement guarantees to
put distinct ranges of the key into distinct tables, then a separate
unique constraint on each table would suffice to guarantee global
uniqueness.
You can set up such a thing today, but it's a manual jury-rigged affair.
An automatic partitioning system would be a lot nicer.
regards, tom lane
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