This xquery will retrieve all records from the namespace-stripped Digitool OAI feed that contain a 264 MARC field.

dtl_oai_264

xquery version "3.0";

<results>
{
for $OAIMarcRecord in /repository/record[metadata/record/datafield[@tag="264"]]

let $callno:= $OAIMarcRecord/metadata/record/datafield[@tag[contains(., "09")]][1]/subfield[@code="a"]
let $title := $OAIMarcRecord/metadata/record/datafield[@tag="245"]
let $publisher := $OAIMarcRecord/metadata/record/datafield[@tag="264"]
let $PID := $OAIMarcRecord/header/identifier/substring-after(., "oai:digital.cjh.org:")

return

<record>
<callno>{data($callno)}</callno>
<title>{data($title)}</title>
<publisher>{data($publisher)}</publisher>
<pid>{data($PID)}</pid>
</record>
}
</results>