Pp. 147 (no. 164)

This code sample is adapted from Clifford B. Anderson and Joseph C. Wicentowski, XQuery for Humanists (College Station: Texas A&M University Press, 2020), 147. Download this code sample in its raw form. View the source on GitHub.

xquery version "3.1";

declare variable $countries :=
    [
        ["China", "Russia", "Japan"],
        ["Mexico", "Canada", "United States"]
    ];

$countries?1?3