Re: plan difference between set-returning function with ROWS within IN() and a plain join

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> > I'm noticing a difference in planning between a join and an in() clause,
> > before trying to create an independent test-case, I'd like to know if
> > there's
> > an obvious reason why this would be happening:
>
> Is the function STABLE ?

Yep.

For the record, even changing it to immutable doesn't make a difference in 
performance here.



-- 
Best,




Frank.


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