The EXTRACTVALUE function takes as arguments an XMLType instance and an XPath expression and returns a scalar value of the resultant node.
I have an XML string contained in an XMLType and Im trying to extract a single value from it..
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The EXTRACTVALUE() function takes two string arguments: a fragment of XML markup and an XPath expression, (also known as a locator). It returns the text (That is, CDDATA), of the first text node which is a child of the element or elements matching the XPath expression. In cases where a valid XPath...
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...AND ExtractValue(1, CONCAT(0x5c, (SELECT column_name FROM information_schema.columns LIMIT 1).
...id=4 and extractvalue(rand(),concat(0x3a,(select concat(0x3a,username,0x3a,password) from users limit 0,1)))Output : XPATH syntax error
The &qout;ExtractValue&qout; function in MySQL runs an XPath query against a string representing XML data.
ORA-19025: EXTRACTVALUE returns value of only one node.
With the help of Oracle's extractValue() function one can retrieve values from XML documents stored in a database using XPath expressions. Generally this function works as expected but it gave me a hard time when XML namespaces came into play.