SQL Server Table中XML列的操作代码

--创建测试表 
DECLARE @Users TABLE 
( 
ID INT IDENTITY(1,1), 
UserInfo XML 
) 
---插入测试数据 
DECLARE @xml XML 
SET @xml=' 
<root> 
<user> 
<userid>1</userid> 
<userName>test1</userName> 
</user> 
</root>' 
INSERT INTO @Users(UserInfo)VALUES(@xml) 
--插入单节点,(类型：as first，as last，after（默认），before) 
UPDATE @Users SET UserInfo.modify('insert <address>shanghai</address> 
into (/root/user)[1]') 
--插入多节点以','分割 
UPDATE @Users SET UserInfo.modify('insert (<firstName>steven</firstName>, 
<lastName>shi</lastName>) into (/root/user)[1]') 
-- 增加属性 
declare @editTime varchar(23); 
set @editTime=CONVERT(VARCHAR(23), GETDATE(), 121); 
UPDATE @Users SET UserInfo.modify( 
N'insert (attribute editTime {sql:variable("@editTime")}) 
into(/root/user/userid)[1]' 
) 
--插入多属性以','分割 
declare @aid float,@bid float 
set @aid=0.5 
UPDATE @Users SET UserInfo.modify('insert (attribute aid {sql:variable("@aid")}, 
attribute bid {"test"} 
) 
into (/root/user)[1]') 
---插入注释 
UPDATE @Users SET UserInfo.modify(N'insert <!-- 注释 --> 
before (/root/user/userid[1])[1]') 
---插入处理指令 
UPDATE @Users SET UserInfo.modify('insert <?Program = "A.exe" ?> 
before (/root)[1]') 
---插入CDATA 
UPDATE @Users SET UserInfo.modify(N'insert <C><![CDATA[<city>北京</city> or cdata]]> </C> 
after (/root/user)[1]') 
---插入文本 
UPDATE @Users SET UserInfo.modify(N'insert text{"插入文本"} as first 
into (/root/user)[1]') 
---根据 if 条件语句进行插入 
---判断属性值 
UPDATE @Users SET UserInfo.modify('insert if(/root/user[@ID=1]) then (<tel>888888</tel>) 
else (<qq>66666</qq>) 
into (/root/user)[1]') 
----判断节点Value 
UPDATE @Users SET UserInfo.modify('insert if(/root/user[firstName="steven1"]) then (<tel>1111</tel>) 
else (<qq>2222</qq>) 
into (/root/user)[1]') 
----判断user 节点数是否小于等于10 
UPDATE @Users SET UserInfo.modify('insert if (count(/root/user)<=10) then element user { "This is a new user" } 
else () as last 
into (/root)[1]') 
SELECT * FROM @Users 
--有命名空间的操作 
--DECLARE @xml XML 
-- SET @xml='<root xmlns="http://schemas.microsoft.com/sqlserver/2004/07/adventure-works/users"> 
-- <user> 
-- <userid>1</userid> 
-- <userName>test1</userName> 
-- </user> 
-- </root>' 
-- INSERT INTO Users(UserInfo)VALUES(@xml) 
-- UPDATE Users SET UserInfo.modify(' 
-- declare namespace UI="http://schemas.microsoft.com/sqlserver/2004/07/adventure-works/users"; 
-- insert <UI:user> 
-- <UI:firstName>steven2</UI:firstName> 
-- </UI:user> as first 
-- into (/UI:root)[1]') 
-- SELECT * FROM Users 
-- UPDATE Users SET UserInfo.modify(' 
-- declare namespace UI="http://schemas.microsoft.com/sqlserver/2004/07/adventure-works/users"; 
-- insert attribute ID { "55" } 
-- into (/UI:root/UI:user)[1]')