Re: Proposal to Enable/Disable Index using ALTER INDEX

Thank you for the historical context and working, I understand what you were referring to before now.

Shayon

> On Sep 24, 2024, at 2:08 PM, Peter Eisentraut <peter(at)eisentraut(dot)org> wrote:
>
> On 23.09.24 22:51, Shayon Mukherjee wrote:
>> I am happy to draft a patch for this as well. I think I have a working
>> idea so far of where the necessary checks might go. However if you don’t
>> mind, can you elaborate further on how the effect would be similar to
>> enable_indexscan?
>
> Planner settings like enable_indexscan used to just add a large number (disable_cost) to the estimated plan node costs. It's a bit more sophisticated in PG17. But in any case, I imagine "disabling an index" could use the same mechanism. Or maybe not, maybe the setting would just completely ignore the index.