The string-join function is used to concatenate various sequences separated by a given delimiter.
string-join($sequence as xs:string*, $delimiter as xs:string) as xs:string
$sequence − sequence of zero or more strings.
$delimiter − delimiter to separate the items of above sequence.
let $fruits := <fruits> <fruit>Apple</fruit> <fruit>Orange</fruit> <fruit>Guava</fruit> <fruit>Pinapple</fruit> </fruits> return <results> <fruits>{ string-join($fruits/fruit, ',') }</fruits> </results>
<results> <fruits>Apple,Orange,Guava,Pinapple</fruits> </results>
In order to test the above-mentioned functionality, replace the contents of books.xqy (mentioned in Environment Setup chapter) with the above XQuery expression and execute the XQueryTester java program to verify the result.