On 2020-Mar-25, James Coleman wrote:

> Alvaro: I think you had some ideas on this too; any chance you've know
> of a patch that anyone's got cooking?

I posted this in November
https://postgr.es/m/20191101203310.GA12239@alvherre.pgsql but I didn't
put time to go through the issues there.  I don't know if my approach is
exactly what Andres has in mind, but I was discouraged by the number of
gotchas for which the optimization I propose has to be turned off.

Maybe that preliminary patch can serve as a discussion starter, if
nothing else.

Álvaro Herrera                https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services

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