XQuery: A Typed Functional Language for Querying XML

Philip Wadler

doi:10.1007/978-3-540-44833-4_7

XQuery: A Typed Functional Language for Querying XML

Research output: Chapter in Book/Report/Conference proceeding › Chapter

Abstract / Description of output

XQuery is a typed, functional language for querying XML, currently being designed by the XML Query Working Group of the World-Wide Web Consortium. Here are examples of XQuery queries on a suitable XML document describing books. To list titles of all books published before 2000 you might write: document(”books.xml”)/BOOKS/BOOK[@YEAR < 2000]/TITLE To list the year and title of all books published before 2000 you might write: for $book in document(”books.xml”)/BOOKS/BOOK where $book/@YEAR < 2000 return <BOOK>{ $book/@YEAR, $book/TITLE }</BOOK> And to list for each author the titles of all books by that author you might write: let $books := document(”books.xml”)/BOOKS for $author in distinct($books/BOOK/AUTHOR) return <AUTHOR NAME=”{ $author }”>{ $books/BOOK[AUTHOR = $author]/TITLE }</AUTHOR>

Original language	English
Title of host publication	Advanced Functional Programming
Subtitle of host publication	4th International School, AFP 2002, Oxford, UK, August 19-24, 2002. Revised Lectures
Editors	Johan Jeuring, Simon L. Peyton Jones
Place of Publication	Berlin, Heidelberg
Publisher	Springer
Pages	188-212
Number of pages	25
ISBN (Electronic)	978-3-540-44833-4
ISBN (Print)	978-3-540-40132-2
DOIs	https://doi.org/10.1007/978-3-540-44833-4_7
Publication status	Published - 2003

Publication series

Name	Lecture Notes in Computer Science
Publisher	Springer Berlin Heidelberg
Volume	2638
ISSN (Print)	0302-9743

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10.1007/978-3-540-44833-4_7

http://link.springer.com/chapter/10.1007%2F978-3-540-44833-4_7

Cite this

@inbook{d9e025e032f64c81831ce898091fe70f,

title = "XQuery: A Typed Functional Language for Querying XML",

abstract = "XQuery is a typed, functional language for querying XML, currently being designed by the XML Query Working Group of the World-Wide Web Consortium. Here are examples of XQuery queries on a suitable XML document describing books. To list titles of all books published before 2000 you might write: document(”books.xml”)/BOOKS/BOOK[@YEAR < 2000]/TITLE To list the year and title of all books published before 2000 you might write: for $book in document(”books.xml”)/BOOKS/BOOK where $book/@YEAR < 2000 return <BOOK>{ $book/@YEAR, $book/TITLE } And to list for each author the titles of all books by that author you might write: let $books := document(”books.xml”)/BOOKS for $author in distinct($books/BOOK/AUTHOR) return <AUTHOR NAME=”{ $author }”>{ $books/BOOK[AUTHOR = $author]/TITLE }",

author = "Philip Wadler",

year = "2003",

doi = "10.1007/978-3-540-44833-4_7",

language = "English",

isbn = "978-3-540-40132-2",

series = "Lecture Notes in Computer Science",

publisher = "Springer",

pages = "188--212",

editor = "Johan Jeuring and Jones, {Simon L. Peyton}",

booktitle = "Advanced Functional Programming",

}

XQuery: A Typed Functional Language for Querying XML. / Wadler, Philip.
Advanced Functional Programming: 4th International School, AFP 2002, Oxford, UK, August 19-24, 2002. Revised Lectures. ed. / Johan Jeuring; Simon L. Peyton Jones. Berlin, Heidelberg: Springer, 2003. p. 188-212 (Lecture Notes in Computer Science; Vol. 2638).

Research output: Chapter in Book/Report/Conference proceeding › Chapter

TY - CHAP

T1 - XQuery: A Typed Functional Language for Querying XML

AU - Wadler, Philip

PY - 2003

Y1 - 2003

N2 - XQuery is a typed, functional language for querying XML, currently being designed by the XML Query Working Group of the World-Wide Web Consortium. Here are examples of XQuery queries on a suitable XML document describing books. To list titles of all books published before 2000 you might write: document(”books.xml”)/BOOKS/BOOK[@YEAR < 2000]/TITLE To list the year and title of all books published before 2000 you might write: for $book in document(”books.xml”)/BOOKS/BOOK where $book/@YEAR < 2000 return <BOOK>{ $book/@YEAR, $book/TITLE } And to list for each author the titles of all books by that author you might write: let $books := document(”books.xml”)/BOOKS for $author in distinct($books/BOOK/AUTHOR) return <AUTHOR NAME=”{ $author }”>{ $books/BOOK[AUTHOR = $author]/TITLE }

AB - XQuery is a typed, functional language for querying XML, currently being designed by the XML Query Working Group of the World-Wide Web Consortium. Here are examples of XQuery queries on a suitable XML document describing books. To list titles of all books published before 2000 you might write: document(”books.xml”)/BOOKS/BOOK[@YEAR < 2000]/TITLE To list the year and title of all books published before 2000 you might write: for $book in document(”books.xml”)/BOOKS/BOOK where $book/@YEAR < 2000 return <BOOK>{ $book/@YEAR, $book/TITLE } And to list for each author the titles of all books by that author you might write: let $books := document(”books.xml”)/BOOKS for $author in distinct($books/BOOK/AUTHOR) return <AUTHOR NAME=”{ $author }”>{ $books/BOOK[AUTHOR = $author]/TITLE }

U2 - 10.1007/978-3-540-44833-4_7

DO - 10.1007/978-3-540-44833-4_7

M3 - Chapter

SN - 978-3-540-40132-2

T3 - Lecture Notes in Computer Science

SP - 188

EP - 212

BT - Advanced Functional Programming

A2 - Jeuring, Johan

A2 - Jones, Simon L. Peyton

PB - Springer

CY - Berlin, Heidelberg

ER -

XQuery: A Typed Functional Language for Querying XML

Abstract / Description of output

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