
admin.databaseRangeFieldIndex( scalar-type as String, fieldname as String, collation as String?, range-value-positions as Boolean, [invalid-values as String] ) as element(db.rangeFieldIndex)
This function constructs a range field index specification.
  
  const admin = require('/MarkLogic/admin.xqy');
  admin.databaseRangeFieldIndex("string", "fieldname",
                "http://marklogic.com/collation/",
		fn.false() )
   //returns the range field index specification