declare @data xmlset @data='<bookstore><book category="COOKING">  <title lang="en">Everyday Italian</title>  <author>Giada De Laurentiis</author>  <year>2005</year>  <price>30.00</price></book><book category="CHILDREN">  <title lang="jp">Harry Potter</title>  <author>J K. Rowling</author>  <year>2005</year>  <price>29.99</price></book><book category="WEB">  <title lang="en">XQuery Kick Start</title>  <author>James McGovern</author>  <author>Per Bothner</author>  <author>Kurt Cagle</author>  <author>James Linn</author>  <author>Vaidyanathan Nagarajan</author>  <year>2003</year>  <price>49.99</price></book><book category="WEB">  <title lang="cn">Learning XML</title>  <author>Erik T. Ray</author>  <year>2003</year>  <price>39.95</price></book></bookstore>'--1、文檔select @data--2、任意級別是否存在price節點select @data.exist('//price')--3、獲取所有book節點select @data.query('//book')--4、獲取所有包含lang屬性的節點select @data.query('//*[@lang]') --5、獲取第一個book節點select @data.query('//book[1]')--6、獲取前兩個book節點select @data.query('//book[position()<=2]')--7、獲取最后一個book節點select @data.query('//book[last()]')--8、獲取price>35的所有book節點select @data.query('//book[price>35]')--9、獲取category="WEB"的所有book節點select @data.query('//book[@category="WEB"]')--10、獲取title的lang="en"的所有book節點select @data.query('//book/title[@lang="en"]')--11、獲取title的lang="en"且 price>35的所有book節點select @data.query('//book[./title[@lang="en"] or price>35 ]')--12、獲取title的lang="en"且 price>35的第一book的(第一個)titleselect @data.query('//book[./title[@lang="en"] and price>35 ]').value('(book/title)[1]','varchar(max)')--13、等價于12select @data.value('(//book[./title[@lang="en"] and price>35 ]/title)[1]','varchar(max)')--14、獲取title的lang="en"且 price>35的第一book的(第一個)title的lang屬性select @data.value('((//book[@category="WEB" and price>35 ]/title)[1]/@lang)[1]','varchar(max)')--15、獲取第一本書的titleselect Tab.Col.value('(book/title)[1]','varchar(max)') as title    from @data.nodes('bookstore')as Tab(Col) --16、獲取每本書的第一個authorselect Tab.Col.value('author[1]','varchar(max)') as title    from @data.nodes('//book')as Tab(Col)--17、獲取所有book的所有信息select T.C.value('title[1]','varchar(max)') as title, T.C.value('year[1]','int') as year, T.C.value('title[1]','varchar(max)')as title, T.C.value('price[1]','float') as price, T.C.value('author[1]','varchar(max)') as author1, T.C.value('author[2]','varchar(max)') as author2, T.C.value('author[3]','varchar(max)') as author3, T.C.value('author[4]','varchar(max)') as author4from @data.nodes('//book') as T(C)--18、獲取不是日語(lang!="jp")且價格大于35的書的所有信息select T.C.value('title[1]','varchar(max)') as title, T.C.value('year[1]','int') as year, T.C.value('title[1]','varchar(max)')as title, T.C.value('price[1]','float') as price, T.C.value('author[1]','varchar(max)') as author1, T.C.value('author[2]','varchar(max)') as author2, T.C.value('author[3]','varchar(max)') as author3, T.C.value('author[4]','varchar(max)') as author4from @data.nodes('//book[./title[@lang!="jp"] and price>35 ]') as T(C)