sqlserver中对xml进行操作

  1 --1、创建xml测试数据库表Xml_Table
  2 use Fly_Test --测试数据库
  3 go
  4 
  5 create table Xml_Table(ID  INT identity PRIMARY KEY, XmlData  XML);
  6 --2、插入测试数据
  7 insert into Xml_Table(XmlData) values
  8 (‘<book id="0001">
  9 <title>SqlServer2005</title>
 10 <author>Fly</author>
 11 <price>21</price>
 12 </book>
 13 ‘);
 14 insert into Xml_Table(XmlData) values
 15 (‘<book id="0002">
 16 <title>SqlServer2008</title>
 17 <author>Fly</author>
 18 <price>22</price>
 19 </book>
 20 ‘);
 21 insert into Xml_Table(XmlData) values
 22 (‘<book id="0003">
 23 <title>SqlServer2012</title>
 24 <author>Fly</author>
 25 <price>23</price>
 26 </book>
 27 ‘);
 28 --3、查询
 29 select * from Xml_Table;
 30 --4、对XML操作真正开始了
 31 --SQLServer2005 中对 XML 的处理功能显然增强了很多，提供了 query(),value(),exist(),modify(),nodes()
 32 --查询所有书的名称及作者
 33 select XmlData.query(‘/book‘) as Title,XmlData.query(‘/book/author‘) as Author from Xml_Table;
 34 --显然这不是我们想要的数据
 35 select XmlData.value(‘(/book/title)[1]‘,‘nvarchar(max)‘) as Title, 
 36     XmlData.value(‘(/book/author)[1]‘,‘nvarchar(max)‘) as Author from Xml_Table;
 37 --查询数目编号为0001的书的信息
 38 select  XmlData.value(‘(/book/title)[1]‘,‘nvarchar(max)‘) as Title,
 39     XmlData.value(‘(/book/@id)[1]‘,‘nvarchar(max)‘) as BookID from Xml_Table
 40     where XmlData.value(‘(/book/@id)[1]‘,‘nvarchar(max)‘) = ‘0001‘;
 41 --修改数目编号为0001 的价格为 11
 42 update Xml_Table
 43     set XmlData.modify(‘replace value of (/book[@id="0001"]/price/text())[1] with "11"‘);
 44 --修改 所有的数目作者为Fly_12300
 45 update Xml_Table
 46     set XmlData.modify(‘replace value of (/book/author/text())[1] with "Fly_12300"‘)
 47 --查看是否编号为0001的价格修改为11,且所有作者修改为Fly_12300
 48 select  XmlData.value(‘(/book/price)[1]‘,‘nvarchar(max)‘) as Title,
 49     XmlData.value(‘(/book/@id)[1]‘,‘nvarchar(max)‘) as BookID,
 50     XmlData.value(‘(/book/author)[1]‘,‘nvarchar(max)‘) as Author from Xml_Table
 51     where XmlData.value(‘(/book/@id)[1]‘,‘nvarchar(max)‘) = ‘0001‘;
 52 --添加属性  
 53 update Xml_Table
 54 set XmlData.modify(‘insert attribute isbn {"12300321"} into (/book)[1]‘);
 55 --查看是否存在属性isbn
 56 select  XmlData.value(‘(/book/@isbn)[1]‘,‘nvarchar(max)‘) as isbn,
 57     XmlData.value(‘(/book/@id)[1]‘,‘nvarchar(max)‘) as BookID from Xml_Table
 58     where XmlData.value(‘(/book/@id)[1]‘,‘nvarchar(max)‘) = ‘0001‘;
 59 --在编号为0001的添加子节点 category  为 Computer 的分类
 60 update Xml_Table
 61     set XmlData.modify(‘insert <category>Computer</category> before (/book[@id=0001]/author)[1]‘);
 62 --查看是否添加了category节点
 63 select  XmlData.value(‘(/book/category)[1]‘,‘nvarchar(max)‘) as category,
 64     XmlData.value(‘(/book/@id)[1]‘,‘nvarchar(max)‘) as BookID,XmlData from Xml_Table
 65     where XmlData.value(‘(/book/@id)[1]‘,‘nvarchar(max)‘) = ‘0001‘;
 66 --删除节点
 67 update Xml_Table
 68     set XmlData.modify(‘delete /book[@id=0001]/category‘);
 69 --查看是否删除了category节点
 70 select  XmlData.value(‘(/book/category)[1]‘,‘nvarchar(max)‘) as category,
 71     XmlData.value(‘(/book/@id)[1]‘,‘nvarchar(max)‘) as BookID,XmlData from Xml_Table
 72     where XmlData.value(‘(/book/@id)[1]‘,‘nvarchar(max)‘) = ‘0001‘;
 73 --nodes()  查询 book的编码
 74 select ids.value(‘@id‘, ‘varchar(max)‘),ids.value(‘(title)[1]‘,‘nvarchar(max)‘) title from  Xml_Table 
 75     CROSS APPLY XmlData.nodes(‘//book‘) as X(ids) ;
 76 --exist()
 77 select XmlData.value(‘(/book/@id)[1]‘,‘nvarchar(max)‘) as BookID
 78     from Xml_Table 
 79     where XmlData.exist(‘(/book/@id)‘)=1 --判断是否存在
 80 
 81 
 82 --新建测试表
 83 create table Books(ID nvarchar(32) not null,Name nvarchar(64));
 84 insert into Books values (‘0001‘,‘MSSQLServer2005‘); --书名MSSQLServer2005
 85 insert into Books values (‘0002‘,‘MSSQLServer2008‘); --书名MSSQLServer2008
 86 insert into Books values (‘0003‘,‘MSSQLServer2012‘); --书名MSSQLServer2012
 87 --以下为xml   path
 88 SELECT ID,NAME FROM [dbo].[Books] FOR XML AUTO;
 89 SELECT ID,NAME FROM [dbo].[Books] FOR XML AUTO ,ELEMENTS ,ROOT(‘books‘);
 90 SELECT ID as ‘BookID‘,NAME as ‘BookName‘ FROM [dbo].[Books] FOR XML RAW;
 91 SELECT ID,NAME FROM [dbo].[Books] FOR XML RAW(‘book‘) ,ELEMENTS ,ROOT(‘books‘);
 92 SELECT ID,NAME FROM [dbo].[Books] FOR XML PATH(‘‘) ;
 93 SELECT ID as ‘Detail/@ID‘,NAME as ‘Detail/Name‘ FROM [dbo].[Books] FOR XML PATH(‘Book‘), ROOT(‘Books‘);
 94 SELECT STUFF((SELECT ‘;‘ + Name FROM [dbo].[Books] FOR XML PATH(‘‘)),1,1,‘‘);
 95 
 96 --根据Books 表中的ID，Xml_Table 表中的XmlData ID属性  修改对应的 title属性
 97 --即：根据在books中编码0001的 的名称 MSSQLServer2005
 98 --修改为Xml_Table表中book编码为0001的title为 MSSQLServer2005
 99 
100 declare @data xml
101 declare @id nvarchar(36)
102 declare @name nvarchar(64)
103 declare custore_name cursor for 
104 select Books.ID,Xml_Table.XmlData,Books.Name
105 from Books,Xml_Table
106     where Books.ID= Xml_Table.XmlData.value(‘(/book/@id)[1]‘,‘nvarchar(max)‘);
107  OPEN custore_name   
108 FETCH NEXT FROM custore_name into @id, @data, @name
109 WHILE(@@FETCH_STATUS=0)      
110  BEGIN      
111   set @data.modify((‘replace value of (/book/title/text())[1] with sql:variable("@name")‘))
112   update Xml_Table set XmlData = @data where XmlData.value(‘(/book/@id)[1]‘,‘nvarchar(max)‘) = @id   
113  FETCH NEXT FROM custore_name into   
114     @id, @data, @name
115  END    
116  CLOSE custore_name  
117  deallocate custore_name
118 
119  select * from Xml_Table