sql-server - Extracting Simple Attribute from XML Fields in SQL Server 2008 Table

Question

The goal here is to extract an attribute value from a SQL Server 2008 table column. The column is an XML data type, of course, named 'ProductName'. Here's the sample data

<locale en-US="My Text" />

And here's my latest attempt at getting to 'My Text'

SELECT ProductName.value('/@locale en-US', 'nvarchar(max)')   
AS ProductName FROM MyTable

Thanks and good luck!

Answer 1

SELECT ProductName.value('(/locale/@en-US)[1]', 'nvarchar(max)') AS ProductName 
FROM MyTable

Answer 2

尝试这个：

SELECT
    ProductName.value('(/locale/@en-US)[1]', 'varchar(50)')
FROM 
    dbo.MyTable

/localeXPath 表达式的一部分与元素相匹配，<locale>而该@en-US部分与该XML 元素的en-US 属性相匹配。

Answer 3

declare @xml xml =
'<root>
  <locale en-US="My Text" />
</root>'

select @xml.value('(/root/locale/@en-US)[1]', 'nvarchar(max)')

结果

我的文字