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base repository: postgresql-cfbot/postgresql
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  • 2 commits
  • 20 files changed
  • 2 contributors

Commits on Dec 12, 2025

  1. Add XMLCast function (SQL/XML X025) 

    This patch introduces support for the XMLCAST function, as specified
in SQL/XML:2023 (ISO/IEC 9075-14:2023), Subclause 6.7 "<XML cast
specification>". It enables standards-compliant conversion between
SQL data types and XML, following the lexical rules defined by the
W3C XML Schema Part 2.

XMLCast provides an alternative to CAST when converting SQL values
into XML content, ensuring the output uses canonical XML Schema
lexical representations. For example, timestamp and interval values
are rendered as xs:dateTime and xs:duration (e.g.,
"2024-01-01T12:00:00Z" or "P1Y2M"), conforming to ISO 8601 formats.

Conversely, XMLCast also allows converting XML content back into SQL
types (e.g., boolean, numeric, date/time), validating the input string
according to XML Schema lexical forms.

Supported casts include:
* SQL -> XML: boolean, numeric, character, date/time, interval, binary
* XML -> SQL: the inverse of the above, with lexical validation

The BY REF and BY VALUE clauses are accepted for SQL/XML compatibility,
but ignored.

To support proper handling of infinity values in numeric types during
XML casting (as required by XML Schema specifications), two helper
functions (numeric_is_inf and numeric_is_positive_inf) have been
added to numeric.c.
    @jimjonesbr
    jimjonesbr authored and Commitfest Bot committed Dec 12, 2025
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  2. [CF 5110] v17 - Add XMLCast (SQL/XML X025) 

    This branch was automatically generated by a robot using patches from an
email thread registered at:

https://commitfest.postgresql.org/patch/5110

The branch will be overwritten each time a new patch version is posted to
the thread, and also periodically to check for bitrot caused by changes
on the master branch.

Patch(es): https://www.postgresql.org/message-id/6cc581e9-858c-4aae-93e3-d2f67d6826b7@uni-muenster.de
Author(s): Jim Jones
    Commitfest Bot committed Dec 12, 2025
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