[basex-talk] Joining a varying number of information sources (with XQuery)?

Hello,

It is supported to specify a fixed number of information sources for a for clause. https://www.w3.org/TR/xquery-31/#id-xquery-for-clause

I imagine that the selection of for bindings can occasionally vary so much and might become so big that it would be needed to construct FLWOR expressions by more sophisticated data structures. I guess that the specification of consistent join conditions (and related constraints) would become more challenging. Can any programming interfaces help further to work with such use cases? https://docs.basex.org/wiki/XQuery_Module

Regards, Markus