Sql2005 Xml

XML Features in SQL Server 2005 David Silverlight [MVP XML] [email_address]

Overview ,[object Object],[object Object],[object Object]

SQL Server 2005 XML Enhancements ,[object Object],[object Object]

Enhancements to the FOR XML Clause You can specify a root element for your results. ROOT directive You can use XPath-like expressions to define XML results. PATH mode Results from FOR XML queries can be xml values, making nested queries possible. TYPE directive returns results as xml data type Description Enhancement Element-centric results can include empty elements for null values. Support for NULL values RAW mode queries can return element-centric XML. ELEMENTS directive in RAW mode You can generate inline XSD schemas. Inline XSD schemas

Demos: Using the FOR XML Clause ,[object Object],[object Object],[object Object],[object Object],[object Object]

Enhancements to the OPENXML Function Description Enhancement Columns of type xml can be returned in the WITH clause. Support for xml data type in the WITH clause The sp_xml_preparedocument stored procedure accepts xml parameters. Documents can be xml data type values Document handles are scoped at the batch level and are released when the batch is completed. Batch-level scoping

The xml Data Type ,[object Object],[object Object],[object Object],[object Object]

Storing XML in the Database Benefits: ,[object Object],[object Object],[object Object],Functionality: ,[object Object],[object Object],[object Object],XML schema support: ,[object Object],[object Object]

How to Use Untyped XML CREATE TABLE Invoices (InvoiceID int, SalesDate datetime, CustomerID int, ItemList xml) DECLARE @itemDoc xml SET @itemDoc = '<Items>etc.</Items>' SET @itemDoc = CAST('<Items>etc.</Items>') AS xml SET @itemDoc = CONVERT(xml,'<Items>etc.</Items>') SET @itemDoc = CONVERT(xml,'<Items>etc.') ERROR! ,[object Object],[object Object],[object Object],[object Object],[object Object]

How to Manage XML Schemas CREATE XML SCHEMA COLLECTION cvSchemas AS N'<?xml version="1.0" ?> <xsd:schema targetNamespace= ...' SELECT * FROM sys.xml_schema_collections SELECT * FROM sys.xml_namespaces ALTER XML SCHEMA COLLECTION cvSchemas DROP XML SCHEMA COLLECTION cvSchemas ,[object Object],[object Object],[object Object],[object Object]

How to Use Typed XML ,[object Object],CREATE TABLE HumanResources.EmployeeResume (EmployeeID int, Resume xml (cvSchemas)) INSERT INTO HumanResources.EmployeeResume VALUES (1, '<?xml version="1.0" ?> <resume xmlns="http://cvSchemas"> ... </resume>') ,[object Object],[object Object],CREATE TABLE HumanResources.EmployeeResume (EmployeeID int, Resume xml (DOCUMENT cvSchemas))

Demos: Using Typed XML ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Using XQuery ,[object Object],[object Object],[object Object],[object Object]

What Is XQuery? ,[object Object],/InvoiceList/Invoice[@InvoiceNo=1000] ,[object Object],Description Statement Apply filtering criteria to the iteration. where Iterate through sibling nodes. for Specify the XML to be returned. return

Demos: Using XQuery Expressions ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

How to Query XML with xml Data Type Methods SELECT xmlCol.query( '<InvoiceNumbers> { for $i in /InvoiceList/Invoice return <InvoiceNo> {number($i/@InvoiceNo)} </InvoiceNo> } </InvoiceNumbers>') SELECT xmlCol.value( '(/InvoiceList/Invoice/@InvoiceNo)[1]', 'int') SELECT xmlCol.exist( '/InvoiceList/Invoice[@InvoiceNo=1000]' ) SELECT Invoices.query( '<Store> {sql:column("StoreName")} </Store>') ,[object Object],[object Object],[object Object],[object Object]

How to Modify XML with the modify Method SET @xmlDoc.modify( 'insert element salesperson {"Bill"} as first into (/InvoiceList/Invoice)[1]') SET xmlCol.modify( replace value of (/InvoiceList/Invoice/SalesPerson/text())[1] with "Ted"') SET @xmlDoc.modify( 'delete (/InvoiceList/Invoice/SalesPerson)[1]') ,[object Object],[object Object],[object Object]

What we have learned ,[object Object],[object Object],[object Object],[object Object]

Thank You!!! ,[object Object],[object Object],[object Object],[object Object]

Sql2005 Xml

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Sql2005 Xml