Re: Updating MATERIALIZED VIEWs (Re: delta relations in AFTER triggers)

From: Jim Nasby <Jim(dot)Nasby(at)BlueTreble(dot)com>
To: Nico Williams <nico(at)cryptonector(dot)com>, Kevin Grittner <kgrittn(at)gmail(dot)com>
Cc: "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Updating MATERIALIZED VIEWs (Re: delta relations in AFTER triggers)
Date: 2017-01-21 23:05:50
Message-ID: 2016db76-02ba-7cc3-ae4e-47e25f967663@BlueTreble.com
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On 1/20/17 5:38 PM, Nico Williams wrote:
> If these triggers could be automatically generated, that sure would be
> nice, but some control would be needed over when to update the MV vs.
> mark it as needing a refresh.

FWIW, pg_classy[1], which is still a work in progress, would allow for
that. The idea is that you define a code template which you can then
call with arguments (such as the name of a matview table), and those
arguments get put into the template before executing the resulting SQL.

Most of the basic framework for that is in place; I just need to finish
code that will allow for the extension to track arbitrary database
objects that were created.

1: https://github.com/decibel/pg_classy/blob/master/doc/pg_classy.asc
--
Jim Nasby, Data Architect, Blue Treble Consulting, Austin TX
Experts in Analytics, Data Architecture and PostgreSQL
Data in Trouble? Get it in Treble! http://BlueTreble.com
855-TREBLE2 (855-873-2532)

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