> Alright. I'm attaching the latest version of this patch split in two > parts: the first one is NULLs-related bugfix and the second is the > "improvement" part, which applies on top of the first one.
So is this null-related bugfix supposed to be backpatched? (I assume it's not because it's very likely to change existing plans).
For the good, because cardinality estimations will be more accurate in these cases, so yes I would expect it to be back-patchable.