(:
   file:     check_unitid_counts.xq
   date:     10-May-2010
   author:   Gary Lewis
   purpose:  Checks the total and distinct counts of unitids (ie, IPEDS institutions)
   usage:    Program should be run from directory in which it is located.
             The XML data filename should include the path relative to program.
   example:  zorba -e xml_filename:="../2005/HD2005/hd2005.xml" -f -q check_unitid_counts.xq -z indent=yes
:)

declare variable $xml_filename external;

<results>
   count unitid = {count(fn:doc($xml_filename)/data/record/@unitid)};
   count distinct unitid = {count(distinct-values(fn:doc($xml_filename)/data/record/@unitid))};
</results>