(2, 1, 2) (3, 4, 2) (4, 2, 3) (5, 3, 3) ϥϕϧͷ͚ํ ɾൣғϥϕϧʜ ߦ͖͕͚ॱ ؼΓ͕͚ॱ ਂ͞ ɾ%FXFZॱংʜB C D E ID Name Label Path 1 a (1,5,1) /a 2 b (2,1,2) /a/b 3 c (3,4,2) /a/c 4 d (4,2,3) /a/c/d 5 d (5,3,3) /a/c/d
where $y > “1999” order by $b/author return $b/author TCP/IP Stevens Data on the Web Abiteboul Buneman bib book book year year title author title author author 1994 2000 <author>Abiteboul</author> <author>Buneman</author>
2000 return <ttl>{$b/title/text()}</ttl> }</bib> TCP/IP Stevens Data on the Web Abiteboul Buneman bib book book year year title author title author author 1994 2000 <bib> <ttl>TCP/IP</ttl> </bib>
“title”)) as “books” from books title year TCP/IP 1990 Database 2000 books books <bib year=”1990”><title>TCP/IP</title></bib> <bib year =”2000”><title>Database</title></bib>
xmlquery( ‘for $b in $col return $b/title’ passing books as “col” returning content null on empty) as result from books_xml result <title>TCP/IP</title> <title>Database</title>