Related to this question:

Postgresql cursors are in most cases I've tried extremely slow. The cause is as 
described in my previous answer, in my experience. Is there any plan or way to 
improve this situation? For example, for FDW one would expect the plan on the 
remote side to be similar, if not identical, to the one locally, with the 
exception of the setup cost.
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Regards,
Peter



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