On 2018/12/10 0:57, Amit Langote wrote:
> On Sun, Dec 9, 2018 at 8:13 PM David Rowley
> <david.rowley@2ndquadrant.com> wrote:
>> listp1 was scanned twice (loops=2), listp2 was scanned just once.
>>
>> Now it is true that if the subplan was executed 0 times that it will
>> appear as "(never executed)", but do we really need to explain in this
>> area that "(never executed)" means loops=0?
>
> Ah, I see what you mean. So, "(never executed)" is not the only sign
> of of run-time pruning occurring. The value of loops can be different
> for different subplans / partitions, and it being lower for a given
> subplan means that the subplan has been pruned more number of times.
I updated the patch. Regarding whether we should mention "(never
executed)", it wouldn't hurt to mention it imho, exactly because it's
shown in the place of showing loops=0. How about the attached?
Thanks,
Amit
