If you already had the XMLType, or wanted it in that format for some other reason, you could use an XMLQuery instead of extractValue: select xmlquery('/ROWSET/ROW/NAME/text()' Or to 1 (ENTITY_DECODE) to do the reverse operation and decode: select dbms_nvert('Oracle & Database', 1) from dual ĭBMS_XMLGEN.CONVERT('ORACLE& DATABASE',1)
The second argument defaults to ENTITY_ENCODE, and you can either set that explicitly (using the underlying value 0 in plain SQL) to encode: select dbms_nvert('Oracle & Database', 0) from dual You're doing more work than you need to dbms_xmlgen has a convert() function, which escapes special characters (entities) by default: select dbms_nvert(name) from appname
How can i get this output using DBMS_XMLGEN or is there is any easy way. Which return back the output same as "Oracle & Database"īut i need output as "Oracle & Database" Examples Example 1: Select AliasProperty nodes This example gets the alias properties in the Types.ps1xml. Enter an XPath query, and use the Content, Path, or Xml parameter to specify the XML to be searched. but it return as "Oracle & Database"īelow is query to transform to XML format select SYS.DBMS_XMLGEN.getXML( 'select NAME from APPName ') XML_out from dualĪnd then i try to extract the Name select extractvalue( XMLType.createXML(SYS.DBMS_XMLGEN.getXML( 'select NAME from APPNAme' )),'/ROWSET/ROW/NAME') XML_out from dual Description The Select-Xml cmdlet lets you use XPath queries to search for text in XML strings and documents. I have used the DBMS_XMLGEN to make it XML Complaint and trying to using extractvalue to get the value. What i need to do is get the output in XML compliant format. I have table name "AppName" select NAME from AppName I need to query a table and display the column value by transforming escape character into XML format Please abide by the Oracle Community guidelines and refrain from posting any customer or personally identifiable information (PI/CI). In the body, insert detailed information, including Oracle product and version. Enter a title that clearly identifies the subject of your question. Scripting on this page enhances content navigation, but does not change the content in any way.I have a requirement. Select a discussion category from the picklist. The following example extracts the value of the /Warehouse/Dock node of the XML path of the warehouse_spec column in the sample table oe.warehouses:ĮXTRACT(warehouse_spec, '/Warehouse/Docks') "Number of Docks"Ĭompare this example with the example for EXTRACTVALUE, which returns the scalar value of the XML fragment. result (mandatory): This is what is returned if the search value mentioned previously matches the expression value. search (mandatory): This is the value to compare against the expression. This argument must resolve to a VARCHAR2 value that specifies a default mapping or namespace mapping for prefixes, which Oracle Database uses when evaluating the XPath expression(s). The parameters of the Oracle DECODE function are: expression (mandatory): This is the value to compare. The optional namespace_string is required if the XML you are handling uses a namespace prefix. Introduction to Oracle DECODE () function The Oracle DECODE () function allows you to add the procedural if-then-else logic to the query.
#Oracle select xml decode how to
If you omit the initial slash, then the context of the relative path defaults to the root node. Oracle DECODE Function Summary: in this tutorial, you will learn how to use the Oracle DECODE () function to embed if-then-else logic in SQL queries.
You can specify an absolute XPath_string with an initial slash or a relative XPath_string by omitting the initial slash. It applies a VARCHAR2 XPath string and returns an XMLType instance containing an XML fragment. See XMLQUERY for more information.ĭescription of the illustration ''extract_xml.gif''ĮXTRACT (XML) is similar to the EXISTSNODE function. Step 1 : You can create separate column of XMLType in table level to store the XML type data. You can convert XML data to any of the string or binary types, and you can convert any of the string or binary types to XML. But Here i would like to give you some important examples for the same. SQL Server lets you do both, to a limited degree. However, Oracle recommends that you use the XMLQUERY function instead. When you’re working with XML data, you might find that you want to convert a value from the XML data type to another type, or from another type to the XML type. It is still supported for backward compatibility. The EXTRACT (XML) function is deprecated.
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