Xml xQuery分组问题
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BA57A934-6CDC-11D9-830B-000393DE16
编译程序
阿尔弗雷德·V·阿霍
拉维·塞蒂
杰弗里·D·厄尔曼
艾迪森维斯理
1986-01-01
102
2005-01-22
F7468E09-6CDB-11D9-830B-000393DE16
数据库驱动的网站
杰西·费勒
摩根考夫曼
1998-04-15
平装本
50.95
2005-01-22
35
1.5
计算机Bks-互联网
计算机书籍：网络编程
计算机网络
计算机
数据库管理-概述
数据库管理
设计
分布式数据库
信息技术
互联网网站设计
网络-概述
网站
计算机/计算机科学
608628133638
FBC45DF4-6CDE-11D9-830B-000393DE16
自动机理论、语言和计算简介（第二版）
霍普克罗夫特
拉吉耶夫·莫特瓦尼
杰弗里·D·厄尔曼
艾迪森维斯理
2000-11-14
108.20
2005-01-22
FBC7CA56-6CDE-11D9-830B-000393DE16
操作系统概念
亚伯拉罕西尔伯沙茨
格雷格·加涅
彼得·贝尔·加尔文
威利
2002-03-08
107.95
2005-01-22
FBCB3DCF-6CDE-11D9-830B-000393DE16
编程语言概念，第六版
罗伯特·W·塞贝斯塔
艾迪森维斯理
2003-07-24
112.40
2005-01-22
19E5E602-6CDF-11D9-830B-000393DE16
数据库系统第一门课程，A
杰弗里·D·厄尔曼
珍妮弗·维多姆
普伦蒂斯大厅
1997-04-02
精装
67
2005-01-22
3.2
计算机图书：数据库
计算机
数据库工程
数据库管理-概述
数据库管理
1C60074A-6CDF-11D9-830B-000393DE16
数据库系统实现
赫克托·加西亚·莫利纳
杰弗里·D·厄尔曼
詹妮弗·维多姆
普伦蒂斯大厅
1999-06-11
89
2005-01-22
1C635DB0-6CDF-11D9-830B-000393DE16
数据库系统：全集
赫克托·加西亚·莫利纳
杰弗里·D·厄尔曼
詹妮弗·维多姆
普伦蒂斯大厅
2001-10-02
98
2005-01-22
1C66B7B4-6CDF-11D9-830B-000393DE16
计算机网络：以互联网为特色的自上而下的方法
库罗斯
基思·W·罗斯
詹姆斯·库罗斯
凯斯·罗斯
艾迪森维斯理
2002-07-17
100
2005-01-22
1C6AC88C-6CDF-11D9-830B-000393DE16
计算机网络和因特网，第四版
道格拉斯E角酒店
拉尔夫·E·德罗姆斯
普伦蒂斯大厅
2003-07-28
100
2005-01-22
1C6E712C-6CDF-11D9-830B-000393DE16
编程语言概要-第2版
丹尼尔·P·弗里德曼
米切尔魔杖
克里斯托弗·T·海恩斯
麻省理工学院出版社
2001-01-29
62
2005-01-22
1C71B23E-6CDF-11D9-830B-000393DE16
操作系统概念
亚伯拉罕西尔伯沙茨
格雷格·加涅
彼得·贝尔·加尔文
威利
2002-03-08
107.95
2005-01-22
1C764AD4-6CDF-11D9-830B-000393DE16
人工智能：现代方法（第二版）
斯图尔特·J·拉塞尔
彼得·诺维格
普伦蒂斯大厅
2002-12-20
93.33
2005-01-22
1C898640-6CDF-11D9-830B-000393DE16
计算机网络：系统方法，第3版
拉里·L·彼得森
布鲁斯·S·戴维斯
摩根考夫曼
2003-05-22
89.95
2005-01-22
1C8DD37A-6CDF-11D9-830B-000393DE16
SQL基础（第二版）
约翰·J·帕特里克
普伦蒂斯大厅酒店
2002-05-07
54.99
2005-01-22
1C91D772-6CDF-11D9-830B-000393DE16
数据库系统基础，第四版
埃尔玛斯里
沙姆坎特·B·纳瓦特
艾迪森维斯理
2003-07-23
104.20
2005-01-22
F3C7B24F-6CDC-11D9-830B-000393DE16
DB2通用数据库完整指南
钱伯林博士
唐·钱伯林
摩根考夫曼
1998-08-15
平装本
62.95
2005-01-22
4.4
计算机Bks-数据库管理
计算机图书：数据库
计算机
数据库管理-概述
一般的
IBM数据库2
资讯储存及；检索
关系数据库
电脑/资讯储存及；检索
F6B35F21-6CDC-11D9-830B-000393DE16
DB2：完整参考（完整参考系列）
罗曼·B·梅尔尼克
保罗·C·齐科普洛斯
麦格劳-希尔公司
2001-10-01
59.99
2005-01-22
F6B97E54-6CDC-11D9-830B-000393DE16
适用于Windows和UNIX/Linux的DB2UDBV8手册
菲利普·K·冈宁
普伦蒂斯大厅酒店
2003-08-06
59.99
2005-01-22
F6BCBB88-6CDC-11D9-830B-000393DE16
适用于Linux、Unix和Windows的DB2 SQL过程语言
叶伯英
德鲁·布拉德斯托克
哈娜·柯蒂斯
米高
扎米尔·贾默罕默德
刘嘉玲
弗雷泽·麦克阿瑟
普伦蒂斯大厅酒店
2002-12-24
59.99
2005-01-22
F6C0A296-6CDC-11D9-830B-000393DE16
DB2UDBV8.1认证考试700学习指南
罗杰·E·桑德斯
普伦蒂斯大厅酒店
2003-09-17
49.99
2005-01-22
F6C4058C-6CDC-11D9-830B-000393DE16
DB2基础知识假人认证
保罗·C·齐科普洛斯
詹妮弗·吉布斯
罗曼·B·梅尔尼克
傻瓜
2001-08-01
34.99
2005-01-22
F6D9A3D8-6CDC-11D9-830B-000393DE16
DB2 Universal Database V8 for Linux、UNIX和Windows数据库管理器
xquery version "1.0";
let $library := doc('library.xml')
for $borrower in $library/library/borrowers/borrower
for $name in distinct-values($borrower/name)
let $asins := data($borrower/borrowed/book/@asin)
let $book := $library/library/items/book[@asin = $asins]
order by $book/published
return
<book>
<name>{$name}</name>
<title>{data($book/title)}</title>
<date>{data($book/published)}</date>
</book>
<book>
<name> John Doe </name>
<title>Database Driven Web SitesFirst Course in Database Systems, A</title>
<date>1998-04-151997-04-02</date>
</book>
<book>
<name> Mary Jane </name>
<title>CompilersDatabase Driven Web Sites</title>
<date>1986-01-011998-04-15</date>
</book>
<book>
<name> Bill Jones </name>
<title/>
<date/>
</book>
<book>
<name> Anne Marie</name>
<title>CompilersDatabase Driven Web SitesFirst Course in Database Systems, AA Complete Guide to DB2 Universal Database</title>
<date>1986-01-011998-04-151997-04-021998-08-15</date>
</book>
<borrowers>
<nameOfBorrower>
<book>
<bookTitle />
<bookPublishedDate />
</book>
.
.
.
//another book here and so on
</nameOfBorrower>
</borrower>
xquery version "1.0";
let $library := doc('library.xml')
for $name in distinct-values($library/library/borrowers/borrower/name)
return
<borrower>
<name>{$name}</name>
{
for $asin in $library/library/borrowers/borrower[/name = $name]/borrowed/book/@asin
let $book := $library/library/items/book[@asin = $asin]
order by $book/published
return
<book>
<title>{data($book/title)}</title>
<date>{data($book/published)}</date>
</book>
}
</borrower>