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help / color / mirror / Atom feedFrom: Shaun Thomas <[email protected]>
To: Rick Otten <[email protected]>
Cc: pgsql-performa. <[email protected]>
Subject: Re: partitioning materialized views
Date: Fri, 7 Jul 2017 08:12:58 -0500
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> I don't think the downstream dependencies will let that work without
> rebuilding them as well. The drop fails (without a cascade), and the other
> views and matviews that are built off of this all simply point to x_old.
Wow, ouch. Yeah, I'd neglected to consider dependent objects. Your
only "out" at this point is to either add or utilize a "modified_date"
column of some kind, so you can maintain a different MV with some
recent window of data, and regularly merge that into a physical local
copy (not an MV) sort of like a running ETL. Though that won't help
with deletes, unfortunately.
--
Shaun M Thomas - 2ndQuadrant
PostgreSQL Training, Services and Support
[email protected] | www.2ndQuadrant.com
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