Chris Joysn <joysn71@gmail.com> writes:
> I have an issue when using CTEs. A query, which consists of multiple CTEs,
> runs usually rather fast (~5s on my environment). But it turned out that
> using one CTE can lead to execution times of up to one minute.
> That CTE is used two times within the query.
Try labeling that CTE as NOT MATERIALIZED.
regards, tom lane