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emchateau/count.xq

Created April 26, 2022 13:57
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count.xq
for $group in db:open('xpr')/xpr/expertises/expertise
for $year in $group/description/sessions/
date[@when castable as xs:date]/year-from-date(@when)
group by $year
return $year || ' : ' || count($group/self::node())
(: The self::node() step is used in the last line to remove duplicate nodes in the resulting $group value. :)
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