vxquery-xtest/src/test/resources/Queries/XQuery/GhcndCount/Partition-2/q03_count.xq

(: XQuery Aggregate Query :)
(: Find the highest recorded temperature (TMAX) in Celsius.                   :)
fn:count(
    let $collection := "ghcnd_half_1|ghcnd_half_2"
    for $r in collection($collection)/dataCollection/data
    where $r/dataType eq "TMAX"
    return $r/value
)