út 2. 12. 2025 v 7:05 odesílatel Tom Lane <tgl@sss.pgh.pa.us> napsal:
Pavel Stehule <pavel.stehule@gmail.com> writes: > ne 23. 11. 2025 v 1:45 odesílatel Tom Lane <tgl@sss.pgh.pa.us> napsal: >> So after some thought I renamed inline_set_returning_function to >> inline_function_in_from, and made a bunch of other changes in names >> and comments to line up with that.
> I checked this patch, and I think so using the body of the > function foo_from_bar is very confusing.
Perhaps that example could use more documentation effort ...
> More correct form should be > RAISE EXCEPTION 'halt - should not be executed directly';
... but I don't agree with this at all. We specifically do not guarantee that replacement via SupportRequestSimplify will be honored, and I think the same must be true for SupportRequestInlineInFrom. Otherwise we risk breaking who-knows-how-many third-party tools, as well as cases where the optimizer declines to inline (eg, because there are volatile arguments). Besides, what's the value?
My note is just for this test.
I understand that the planner function can handle only some specific variants - and all others will be done by real execution.
and I was very interested in what is magic in forward, and the reality is very simple.
I think this feature can be very practical - but can be very messy for people who don't understand well to complete the picture. And it is a second level of overloading (what is byself dangerous for someone).
