Pavel Stehule <pavel.steh...@gmail.com> writes:
>> no, there is strange estimation
>>
>> SubPlan 2
>> -> CTE Scan on pl pl_1 (cost=0.00..468.59
>> rows=89000 width=4) (actual time=0.023..8.379 rows=566 loops=1000)
>> Output: foo(pl_1.a)
Nothing strange about it. 89 rows out from the underlying CTE (which
appears to be dead accurate) times 1000 for the SRF's expansion.
> respective why estimation is unstrable
It isn't --- you are looking at two different subplans there, one with
a SRF in it and one without.
regards, tom lane
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