[ioltas]

It's been argued a few times that we should have the possibility to make an index invalid on sight with a proper ALTER INDEX command, yes.

[samokhvalov]

I see to use cases:

- disable for all - disable only for my session, to check what would happen with the plan, and only then decide to proceed with disabling for all (or to drop it)

ALTER is quite invasive way, even more than "UPDATE .. SET indisvalid = false ...". It would be good to do it via SET as it was proposed in the plantuner extension long ago.