"Kevin Grittner" <kevin.gritt...@wicourts.gov> writes:
> Estimates extracted from the problem plan:
 
>   Nested Loop Left Join  (rows=806903677108)
>     ->  Nested Loop Left Join  (rows=203176856)
>           ->  Nested Loop Left Join  (rows=51160)
>                 ->  Nested Loop Left Join  (rows=28)
>                 ->  Append  (rows=4)
>           ->  Append  (rows=2)
>     ->  Append  (rows=2)

That does look weird.  Do we have a self-contained test case?

I wouldn't necessarily expect the join rowcount to be exactly the
product of the input rowcounts, but it shouldn't be that far off,
I should think.

                        regards, tom lane

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