Dear Team,
I am getting error - If expression : no updating expression allowed - while trying to update the "Data" DB.
I need to update the DB, if it is not already updated...
for $c in doc('2012')/Docs/Doc/No/@n return if (string-length(doc('Data')/Docs/Doc[No/@n=$c]/Title/Name/text()) eq 0) then insert node $c into doc('Data')/Docs else <l>{''}</l>