(
for $node in $doc//(@*,*)
let $nn := node-name($node)
let $ns-uri := namespace-uri-from-QName($nn)
let $prefix := prefix-from-QName($nn)
where $ns-uri
return ``[declare namespace `{ $prefix }` = "`{ $ns-uri }`"]``
) => distinct-values()
=> string-join(out:nl())

https://git.basex.io/snippets/77

Other than that you might have to consult the Schema files I guess :)

Am 14.02.2020 um 09:27 schrieb thufir <hawat.thufir@gmail.com>:

I think I mainly need to add a namespace for fods:

thufir@dur:~/fods/flwor$
thufir@dur:~/fods/flwor$ basex text.xq
Stopped at /home/thufir/fods/flwor/text.xq, 3/14:
[XPST0081] No namespace declared for 'text:p'.
thufir@dur:~/fods/flwor$
thufir@dur:~/fods/flwor$ cat text.xq

for $foo in db:open("foo")
return $foo//text:p

thufir@dur:~/fods/flwor$

https://stackoverflow.com/q/60222478/262852

how do I know all the namespacess? from the libre office file?