On Monday, October 21, 2024, David Rowley <
dgrowleyml@gmail.com> wrote:
On Tue, 22 Oct 2024 at 13:45, Melanie Plageman
<melanieplageman@gmail.com> wrote:
> I was surprised today when I saw that with
> enable_indexscan=off
> enable_indexonlyscan=on
Robert did propose to change this behaviour while he was working on
the disabled_nodes changes. I did push back on the proposed change
[1]. If you feel strongly that what we have is wrong, then maybe it's
worth opening the discussion about that again.
We should probably at least improve the documentation in 19.17.1; this interaction is apparently not self-evident.
enable_indexscan
Enable or disable the planner’s use of both index-scan and index-only-scans plan types.
enabled_indexonlyscan
Set to off to disable index-only-scan plan type while leaving index-scan plan types enabled. This setting has no effect if enable_indexscan is set to off.
David J.
