On 2020-Oct-20, Tom Lane wrote:
> and the fact that we've gone twenty-odd years without similar
> previous proposals doesn't speak well for it being really useful.
Actually, there's at least two threads about this:
https://postgr.es/m/flat/86d2ceg611(dot)fsf(at)jerry(dot)enova(dot)com
https://postgr.es/m/flat/74af1f60-34af-633e-ee8a-310d40c741a7%402ndquadrant.com