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https://www.ibm.com/support/knowledgecenter/en/SSEPGG_11.1.0/com.ibm.db2.luw.xml.doc/doc/xqrgetdata.html
db2-fn:sqlquery The db2-fn:sqlquery function takes a string argument that represents a fullselect and returns an XML sequence that is a concatenation of the XML values that are returned by the fullselect. The fullselect must specify a single-column result set, and the column must have a data type of XML. Specifying a fullselect allows you to use the power of SQL to present XML data to XQuery.
https://www.ibm.com/support/knowledgecenter/SSEPGG_9.7.0/com.ibm.db2.luw.xml.doc/doc/xqrcontainer.html
DB2 XQuery regular expression support is based on the XML schema regular expression support as defined in the W3C Recommendation XML Schema Part 2: Datatypes Second Edition with extensions as defined by W3C Recommendation XQuery 1.0 and XPath 2.0 Functions and Operators.
https://www.oxygenxml.com/xml_editor/IBM_DB2_XML_support.html
XQuery Support. DB2 pureXML supports XQuery interrogations when working with the XML content of the XML column types. For example, if you want to generate an XQuery to measure the employee satisfaction levels regarding the company rules, you can open an XQuery template (New/XQuery), configure the transformation scenario to match the DB2 ...
https://www.oxygenxml.com/doc/IBM_DB2_XML_support.pdf
XQuery Support DB2 pureXML supports XQuery interrog ations when w orking with the XML content of the XML column types. For example if you lik e to generate a XQuery to measure the emplo yee satisf action le vels regarding the compan y rules, you can open an XQuery editor (Ne w->XQuery), configure the transformation scenario
http://www.redbooks.ibm.com/technotes/tips0896.pdf
XQuery in IBM DB2 10 for z/OS 6 XQuery performance XQuery greatly enhances DB2 support for constructing and manipulating XML, far beyond what was expressible using SQL/XML and XPath. XQuery is allowed everywhere that XPath is allowed, including XMLQUERY, XMLEXISTS, and XMLTABLE, but there are some important considerations for performance
https://www.redbooks.ibm.com/abstracts/tips0896.html
Introduction In November 2011, support was added for XQuery in IBM® DB2® 10 for z/OS® through APARs PM47617 and PM47618. XQuery extends XPath with new language constructs, adding expressiveness to the IBM pureXML® features of DB2.
https://github.com/IBM/db2-samples
Jul 20, 2019 · Note: There are various samples provided for demonstrating Native XML support in Db2. The XML samples come with their own build files, utility files, supporting scripts etc. XQuery samples are all further collected in a separate directory under the parent XML directory.
https://stackoverflow.com/questions/4763757/regular-expressions-in-db2-sql
There is no built-in support for regular expressions in DB2 9.7. The only way is using UDFs or table functions as described in the article 'OMG Ponies' added in the comment. @dan1111: I do not appreciate my post being edited, especially if people can't read the question correctly.
https://www.wisdomjobs.com/e-university/ibm-db2-tutorial-215/sql-xml-and-xquery-support-7093.html
For the XQuery statement, the query should be prefixed with the xquery word. For more details about how to write an XQuery, refer to Chapter , “Application development with DB2 pureXML”. Example shows how to run an XQuery statement in Java.
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