Re: daisychain rows to detect value - Mailing list pgsql-sql

From David G. Johnston
Subject Re: daisychain rows to detect value
Date
Msg-id CAKFQuwbprdJpGnNkGdYHf1yB6TX+ejZx9TOr7W87a3c1yhfE8w@mail.gmail.com
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In response to daisychain rows to detect value  (Gary Stainburn <gary.stainburn@ringways.co.uk>)
List pgsql-sql
On Mon, Mar 27, 2017 at 2:58 AM, Gary Stainburn <gary.stainburn@ringways.co.uk> wrote:
Is there a way to be able to propogate the untagged VLAN to any port patched
to it?

​PostgreSQL natively provides a Recursive CTE​ capability that can be used to solve arbitrary depth hierarchy problems.


Triggers are useful if you want to do the calculation during writes instead of during reads.


David J.

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