my $marc = MARC::Record->new_from_xml($marcxml, 'UTF-8');
$field = $marc->field($tag);
};
- return $field->as_string($subfield,$delimiter);
+ return $field->as_string($subfield,$delimiter) if $field;
+ return;
$$ LANGUAGE PLPERLU STABLE;
CREATE OR REPLACE FUNCTION migration_tools.get_marc_tags (TEXT, TEXT, TEXT, TEXT) RETURNS TEXT[] AS $$