The count function is used to count the total items present in a sequence.
count($seq as item()*)
$seq − provided sequence. Sequence can contain 0 or more items.
let $items := (1,2,3,4,5,6) let $count := count($items) return <result> <count>{$count}</count> </result>
<result> <count>6</count> </result>
In order to test the above-mentioned functionality, replace the contents of books.xqy (mentioned in the Environment Setup chapter) with the above XQuery expression and execute the XQueryTester java program to verify the result.