1 files changed, 39 insertions, 0 deletions
diff --git a/doc/src/sgml/html/datatype-uuid.html b/doc/src/sgml/html/datatype-uuid.html
new file mode 100644
index 0000000..63b2e43
--- /dev/null
+++ b/doc/src/sgml/html/datatype-uuid.html
@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>8.12. UUID Type</title><link rel="stylesheet" type="text/css" href="stylesheet.css" /><link rev="made" href="pgsql-docs@lists.postgresql.org" /><meta name="generator" content="DocBook XSL Stylesheets Vsnapshot" /><link rel="prev" href="datatype-textsearch.html" title="8.11. Text Search Types" /><link rel="next" href="datatype-xml.html" title="8.13. XML Type" /></head><body id="docContent" class="container-fluid col-10"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">8.12. <acronym class="acronym">UUID</acronym> Type</th></tr><tr><td width="10%" align="left"><a accesskey="p" href="datatype-textsearch.html" title="8.11. Text Search Types">Prev</a> </td><td width="10%" align="left"><a accesskey="u" href="datatype.html" title="Chapter 8. Data Types">Up</a></td><th width="60%" align="center">Chapter 8. Data Types</th><td width="10%" align="right"><a accesskey="h" href="index.html" title="PostgreSQL 15.5 Documentation">Home</a></td><td width="10%" align="right"> <a accesskey="n" href="datatype-xml.html" title="8.13. XML Type">Next</a></td></tr></table><hr /></div><div class="sect1" id="DATATYPE-UUID"><div class="titlepage"><div><div><h2 class="title" style="clear: both">8.12. <acronym class="acronym">UUID</acronym> Type</h2></div></div></div><a id="id-1.5.7.20.2" class="indexterm"></a><p>
+    The data type <code class="type">uuid</code> stores Universally Unique Identifiers
+    (UUID) as defined by <a class="ulink" href="https://tools.ietf.org/html/rfc4122" target="_top">RFC 4122</a>,
+    ISO/IEC 9834-8:2005, and related standards.
+    (Some systems refer to this data type as a globally unique identifier, or
+    GUID,<a id="id-1.5.7.20.3.3" class="indexterm"></a> instead.)  This
+    identifier is a 128-bit quantity that is generated by an algorithm chosen
+    to make it very unlikely that the same identifier will be generated by
+    anyone else in the known universe using the same algorithm.  Therefore,
+    for distributed systems, these identifiers provide a better uniqueness
+    guarantee than sequence generators, which
+    are only unique within a single database.
+   </p><p>
+    A UUID is written as a sequence of lower-case hexadecimal digits,
+    in several groups separated by hyphens, specifically a group of 8
+    digits followed by three groups of 4 digits followed by a group of
+    12 digits, for a total of 32 digits representing the 128 bits.  An
+    example of a UUID in this standard form is:
+</p><pre class="programlisting">
+a0eebc99-9c0b-4ef8-bb6d-6bb9bd380a11
+</pre><p>
+    <span class="productname">PostgreSQL</span> also accepts the following
+    alternative forms for input:
+    use of upper-case digits, the standard format surrounded by
+    braces, omitting some or all hyphens, adding a hyphen after any
+    group of four digits.  Examples are:
+</p><pre class="programlisting">
+A0EEBC99-9C0B-4EF8-BB6D-6BB9BD380A11
+{a0eebc99-9c0b-4ef8-bb6d-6bb9bd380a11}
+a0eebc999c0b4ef8bb6d6bb9bd380a11
+a0ee-bc99-9c0b-4ef8-bb6d-6bb9-bd38-0a11
+{a0eebc99-9c0b4ef8-bb6d6bb9-bd380a11}
+</pre><p>
+    Output is always in the standard form.
+   </p><p>
+    See <a class="xref" href="functions-uuid.html" title="9.14. UUID Functions">Section 9.14</a> for how to generate a UUID in
+    <span class="productname">PostgreSQL</span>.
+   </p></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="datatype-textsearch.html" title="8.11. Text Search Types">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="datatype.html" title="Chapter 8. Data Types">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="datatype-xml.html" title="8.13. XML Type">Next</a></td></tr><tr><td width="40%" align="left" valign="top">8.11. Text Search Types </td><td width="20%" align="center"><a accesskey="h" href="index.html" title="PostgreSQL 15.5 Documentation">Home</a></td><td width="40%" align="right" valign="top"> 8.13. <acronym class="acronym">XML</acronym> Type</td></tr></table></div></body></html>
+\ No newline at end of file