Re: Write-able CTEs, Update-able views, Hierarchical data, and optimistic locking

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От David Fetter
Тема Re: Write-able CTEs, Update-able views, Hierarchical data, and optimistic locking
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Msg-id 20100530012538.GD3615@fetter.org
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Ответ на Write-able CTEs, Update-able views, Hierarchical data, and optimistic locking  (Richard Broersma <richard.broersma@gmail.com>)
Ответы Re: Write-able CTEs, Update-able views, Hierarchical data, and optimistic locking  (Bruce Momjian <bruce@momjian.us>)
Re: Write-able CTEs, Update-able views, Hierarchical data, and optimistic locking  (Richard Broersma <richard.broersma@gmail.com>)
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On Sat, May 29, 2010 at 01:29:50PM -0700, Richard Broersma wrote:
> This might be a premature question considering write-able CTEs are not
> in core, but...
>
> I wondering if write-able CTE's will be the silver bullet that will
> make rule based update-able views based multiple vertically
> partitioned table robust.  By robust, I mean to elimination the
> update anomalies that can occur from the view point client side
> optimistic locking where the virtual row appears to be
> inconsistently updated.

I'm not sure I understand.  When the concurrency issues in writeable
CTEs get fixed, they could become a mechanism for doing what you
describe, but I suspect there would be significant work involved in
harnessing them to that task.

They'll be pretty nice even without the automated view stuff, though :)

Cheers,
David.
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