| (: XQuery Aggregate Query :) | |
| (: Find the highest recorded temperature (TMAX) in Celsius. :) | |
| fn:max( | |
| let $collection := "/tmp/1.0_partition_ghcnd_all_xml/sensors" | |
| for $r in collection($collection)/dataCollection/data | |
| where $r/dataType eq "TMAX" | |
| return $r/value | |
| ) div 10 |