SQL Server解析解析XML数据的方法详解数据的方法详解
主要介绍了SQL Server解析XML数据的方法,结合实例形式详细分析了SQL Server针对xml数据的读取,遍历,删
除,查找等常用操作技巧,具有一定参考借鉴价值,需要的朋友可以参考下
本文实例讲述了SQL Server解析XML数据的方法。分享给大家供大家参考，具体如下：
--5.读取XML
--下面为多种方法从XML中读取EMAIL
DECLARE @x XML
SELECT @x = '
<People>
<dongsheng>
<Info Name="Email">dongsheng@xxyy.com</Info>
<Info Name="Phone">678945546</Info>
<Info Name="qq">36575</Info>
</dongsheng>
</People>'
-- 方法1
SELECT @x.value('data(/People/dongsheng/Info[@Name="Email"])[1]', 'varchar(30)')
-- 方法2
SELECT @x.value('(/People/dongsheng/Info[@Name="Email"])[1]', 'varchar(30)')
-- 方法3
SELECT
C.value('.','varchar(30)')
FROM @x.nodes('/People/dongsheng/Info[@Name="Email"]') T(C)
-- 方法4
SELECT
C.value('(Info[@Name="Email"])[1]','varchar(30)')
FROM @x.nodes('/People/dongsheng') T(C)
-- 方法5
SELECT
C.value('(dongsheng/Info[@Name="Email"])[1]','varchar(30)')
FROM @x.nodes('/People') T(C)
-- 方法6
SELECT
C.value('.','varchar(30)')
FROM @x.nodes('/People/dongsheng/Info') T(C)
WHERE C.value('(.[@Name="Email"])[1]','varchar(30)') IS NOT NULL
-- 方法7
SELECT
C.value('.','varchar(30)')
FROM @x.nodes('/People/dongsheng/Info') T(C)
WHERE C.exist('(.[@Name="Email"])[1]') = 1
--6.Reading values from an XML variable
DECLARE @x XML
SELECT @x =
'<Peoples>
<People Name="tudou" Sex="女" />
<People Name="choushuigou" Sex="女"/>
<People Name="dongsheng" Sex="男" />
</Peoples>'
SELECT
v.value('@Name[1]','VARCHAR(20)') AS Name,
v.value('@Sex[1]','VARCHAR(20)') AS Sex
FROM @x.nodes('/Peoples/People') x(v)
--7.多属性过滤
DECLARE @x XML
SELECT @x = '
<Employees>
<Employee id="1234" dept="IT" type="合同工">
<Info NAME="dongsheng" SEX="男" QQ="5454545454"/>
</Employee>
<Employee id="5656" dept="IT" type="临时工">
<Info NAME="土豆" SEX="女" QQ="5345454554"/>
</Employee>
<Employee id="3242" dept="市场" type="合同工">
<Info NAME="choushuigou" SEX="女" QQ="54543545"/>
</Employee>
</Employees>'
--查询dept为IT的人员信息
--方法1
SELECT
C.value('@NAME[1]','VARCHAR(10)') AS NAME,
C.value('@SEX[1]','VARCHAR(10)') AS SEX,
C.value('@QQ[1]','VARCHAR(20)') AS QQ
FROM @x.nodes('/Employees/Employee[@dept="IT"]/Info') T(C)
/*
NAME SEX QQ
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