SQL Server Table中XML列的操作代码

SQL Server Table中XML列的操作代码，需要的朋友可以参考下。

代码如下:
--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='


1
test1

'
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 shanghai
into (/root/user)[1]')
--插入多节点以','分割
UPDATE @Users SET UserInfo.modify('insert (steven,
shi) 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
before (/root/user/userid[1])[1]')
---插入处理指令
UPDATE @Users SET UserInfo.modify('insert
before (/root)[1]')
---插入CDATA
UPDATE @Users SET UserInfo.modify(N'insert 北京 or cdata]]>
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 (888888)
else (66666)
into (/root/user)[1]')
----判断节点Value
UPDATE @Users SET UserInfo.modify('insert if(/root/user[firstName="steven1"]) then (1111)
else (2222)
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='
--
-- 1
-- test1
--
-- '
-- 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
-- steven2
-- 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]')