Yes, you can modify the database content using XML. The steps include: 1. Generate an XML document with the records to be modified; 2. Open the XML document with OPENXML and create a table variable containing XML data; 3. Use UPDATE to update the records in the table variable; 4. Submit the changes to the database.
Modify database content using XML
XML (Extensible Markup Language) can be used to manipulate database content, including modifying data. Here are the steps:
1. Generate XML document
Create an XML document containing the records you want to modify. Documentation should follow the following format:
<code class="xml"><root> <record> <column_name>value</column_name> </record> <record> <column_name>value</column_name> </record> </root></code>
2. Open an XML document using OPENXML
Open an XML document using OPENXML in a database query. This creates a table variable containing XML data:
<code class="sql">DECLARE @xml xml = '<root><record><column_name>value</column_name></record></root>'; SELECT * FROM OPENXML(@xml, '/root/record', 2) WITH (column_name int);</code>
3. Update records
Use the UPDATE statement to update records in table variables. Specify the column to modify, the new value, and the matching conditions:
<code class="sql">UPDATE OPENXML(@xml, '/root/record', 2) SET column_name = 'new_value' WHERE column_name = 'old_value';</code>
4. Submit changes
After the update is complete, use the COMMIT statement to submit the changes to the database:
<code class="sql">COMMIT;</code>
Notice:
- OPENXML table variables are read-only and must be updated and committed in the same query.
- When the record element is modified, the entire record will be updated.
- You can use other parameters to specify column types and properties in OPENXML.
The above is the detailed content of How to modify database contents of xml. For more information, please follow other related articles on the PHP Chinese website!
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