Read XML as line record
1 declare @x xml 2 set @x='<book genre="security" publicationdate="2002" ISBN="0-7356-1588-2"> 3 <title>Writing Secure Code</title> 4 <author> 5 <first-name>Michael</first-name> 6 <last-name>Howard</last-name> 7 </author> 8 <author> 9 <first-name>David</first-name> 10 <last-name>LeBlanc</last-name> 11 </author> 12 <PRice>39.99</price> 13</book>' 14 15 16 17SELECT nref.value('first-name[1]', 'nvarchar(50)') FirstName, 18 nref.value('last-name[1]', 'nvarchar(50)') LastName 19FROM @x.nodes('//author') AS R(nref) 20 21
The result is
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RSS is an XML-based format used to publish frequently updated data. As a web developer, understanding RSS can improve content aggregation and automation update capabilities. By learning RSS structure, parsing and generation methods, you will be able to handle RSSfeeds confidently and optimize your web development skills.

RSS chose XML instead of JSON because: 1) XML's structure and verification capabilities are better than JSON, which is suitable for the needs of RSS complex data structures; 2) XML was supported extensively at that time; 3) Early versions of RSS were based on XML and have become a standard.

RSS is an XML-based format used to subscribe and read frequently updated content. Its working principle includes two parts: generation and consumption, and using an RSS reader can efficiently obtain information.

The core structure of RSS documents includes XML tags and attributes. The specific parsing and generation steps are as follows: 1. Read XML files, process and tags. 2. Extract,,, etc. tag information. 3. Handle custom tags and attributes to ensure version compatibility. 4. Use cache and asynchronous processing to optimize performance to ensure code readability.

The main differences between JSON, XML and RSS are structure and uses: 1. JSON is suitable for simple data exchange, with a simple structure and easy to parse; 2. XML is suitable for complex data structures, with a rigorous structure but complex parsing; 3. RSS is based on XML and is used for content release, standardized but limited use.

The processing of XML/RSS feeds involves parsing and optimization, and common problems include format errors, encoding issues, and missing elements. Solutions include: 1. Use XML verification tools to check for format errors; 2. Ensure encoding consistency and use the chardet library to detect encoding; 3. Use default values or skip the element when missing elements; 4. Use efficient parsers such as lxml and cache parsing results to optimize performance; 5. Pay attention to data consistency and security to prevent XML injection attacks.

The steps to parse RSS documents include: 1. Read the XML file, 2. Use DOM or SAX to parse XML, 3. Extract headings, links and other information, and 4. Process data. RSS documents are XML-based formats used to publish updated content, structures containing, and elements, suitable for building RSS readers or data processing tools.

RSS and XML are the core technologies in network content distribution and data exchange. RSS is used to publish frequently updated content, and XML is used to store and transfer data. Development efficiency and performance can be improved through usage examples and best practices in real projects.


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