Boszormenyi Zoltan <> writes:
> This means add_child_rel_equivalences() is still takes
> too much time, the previously posted test case calls this
> function 482 times, it's called for almost  every 10th entry
> added to eq_classes. The elog() I put into this function says
> that at the last call list_length(eq_classes) == 4754.

That seems like a ridiculously large number of ECs.  What is the
test query again?

                        regards, tom lane

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