[basex-talk] update:output() update:cache()

I do not exactly understand, for which purpose update:output() is meant. Does anybody have an example, where one can see, how it works? (There is no example in the docs.)

(I am searching for a way, to run a update-expression on a database and give the altered nodes as result back to the restq-user in one query. The update:output() or update:cache() - expression sounded like they do something similar…

At present, i am helping me with a copy/modify/return-solution and am giving back the altered result, before I actually write back the result-node of the previous to the db. But I am searching for a more intuitive way to get this result).

Sincerly Dieter