Hi again, Omar,
The behavior may be surprising, but it's valid: If it can be detected at compile time that an expression will never yield results, it can be simplified and rewritten to an empty sequence, no matter if a referenced database may possibly exist at runtime.
Hope this helps, Christian
Omar Siam Omar.Siam@oeaw.ac.at schrieb am Do., 23. März 2023, 14:49:
Hi,
Either I found an interesting new XQuery feature or a bug:
collection('i_do_not_exist')/some/path[@attr=()] retruns the empty sequence whereas
collection('i_do_not_exist')/some/path throws an error err:FODC0002 so does collection('i_do_not_exist')/ome/path[@attr="i_am_an_attr"]
Am I missing something?
Best regards,
-- Mag. Ing. Omar Siam Austrian Center for Digital Humanities and Cultural Heritage Österreichische Akademie der Wissenschaften | Austrian Academy of Sciences Stellvertretende Behindertenvertrauensperson | Deputy representative for disabled persons Bäckerstraße 13, 1010 Wien, Österreich | Vienna, Austria T: +43 1 51581-7295 omar.siam@oeaw.ac.at | www.oeaw.ac.at/acdh