Postgres Xpath Support

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PostgreSQL: Documentation: 9.1: XML Functions

    https://www.postgresql.org/docs/9.1/functions-xml.html
    xpath(xpath, xml [, nsarray]) The function xpath evaluates the XPath expression xpath (a text value) against the XML value xml. It returns an array of XML values corresponding to the node set produced by the XPath expression. The second argument must be a well formed XML document.

XML Support - PostgreSQL wiki

    https://wiki.postgresql.org/wiki/XML_Support
    Aug 25, 2010 · You should start with the PostgreSQL XML Data Type and PostgreSQL XML Functions documentation in the manual when getting started with PostgreSQL's XML support. This page discusses the planning of that work, which is now largely complete, rendering the following obsolete.

PostgreSQL XML Functions - w3resource

    https://www.w3resource.com/PostgreSQL/postgresql-xml-functions.php
    Instead of returning the individual XML values that satisfy the XPath, this function returns a Boolean indicating whether the query was satisfied or not. This function is equivalent to the standard XMLEXISTS predicate, except that it also offers support for a namespace mapping argument. Syntax: xpath_exists(xpath, xml [, nsarray]) Example. Code:

PostgreSQL: Documentation: 9.3: XML Type

    https://www.postgresql.org/docs/9.3/datatype-xml.html
    8.13.3. Accessing XML Values. The xml data type is unusual in that it does not provide any comparison operators. This is because there is no well-defined and universally useful comparison algorithm for XML data. One consequence of this is that you cannot retrieve rows by comparing an xml column against a search value. XML values should therefore typically be accompanied by a separate key field ...

Using xpath to extract data from an XML column in postgres

    https://stackoverflow.com/questions/17799790/using-xpath-to-extract-data-from-an-xml-column-in-postgres
    Using xpath to extract data from an XML column in postgres. Ask Question Asked 6 years, 2 months ago. Active 12 days ago. Viewed 26k times 5. 2. I've made the following table: ... Extracting multiple levels of xml data using xpath in postgres. 2. Postgresql: Using xpath to extract data from an XML column. 1.

PostgreSQL: Re: XQuery support

    https://www.postgresql.org/message-id/4B7B269F.6090708%40dunslane.net
    > start by limiting it to plain XPath, without the FLWOR stuff. I think > that would satisfy the vast majority of needs, although you might feel > differently. (Do a Google for XMLTABLE - every example I found uses > plain XPath expressions.) A much more urgent need we have, IMNSHO, than for XQuery, is for XSLT support that actually works.

PostgreSQL: Documentation: 8.2: XML Document Support

    https://www.postgresql.org/docs/8.2/datatype-xml.html
    8.14. XML Document Support. XML (Extensible Markup Language) support is not one capability, but a variety of features supported by a database system. These capabilities include storage, import/export, validation, indexing, efficiency of modification, searching, transforming, and XML to SQL mapping. PostgreSQL supports some but not all of these XML capabilities.

PostgreSQL: Documentation: 8.4: XML Functions

    https://www.postgresql.org/docs/8.4/functions-xml.html
    9.14.1. Producing XML Content. A set of functions and function-like expressions are available for producing XML content from SQL data. As such, they are particularly suitable for formatting query results into XML documents for processing in client applications.

[PostgreSQL] XPath and XML support - Grokbase

    https://grokbase.com/t/postgresql/pgsql-general/068qsv52xb/xpath-and-xml-support
    Aug 23, 2006 · John Gray There's a lot of scope to do better than the current support, certainly. However, the "not ported to Windows" is slightly misleading - the code (like a lot of contrib code) compiles fine under Windows. Because of the dependency on libxml2, it might not often be distributed as a binary, but people are definitely using on Win32 (I'm not really a Win32 user but I have tried it and it ...



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