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+<!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>ALTER GROUP</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="sql-alterfunction.html" title="ALTER FUNCTION" /><link rel="next" href="sql-alterindex.html" title="ALTER INDEX" /></head><body id="docContent" class="container-fluid col-10"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">ALTER GROUP</th></tr><tr><td width="10%" align="left"><a accesskey="p" href="sql-alterfunction.html" title="ALTER FUNCTION">Prev</a> </td><td width="10%" align="left"><a accesskey="u" href="sql-commands.html" title="SQL Commands">Up</a></td><th width="60%" align="center">SQL Commands</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="sql-alterindex.html" title="ALTER INDEX">Next</a></td></tr></table><hr /></div><div class="refentry" id="SQL-ALTERGROUP"><div class="titlepage"></div><a id="id-1.9.3.15.1" class="indexterm"></a><div class="refnamediv"><h2><span class="refentrytitle">ALTER GROUP</span></h2><p>ALTER GROUP — change role name or membership</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><pre class="synopsis">
+ALTER GROUP <em class="replaceable"><code>role_specification</code></em> ADD USER <em class="replaceable"><code>user_name</code></em> [, ... ]
+ALTER GROUP <em class="replaceable"><code>role_specification</code></em> DROP USER <em class="replaceable"><code>user_name</code></em> [, ... ]
+
+<span class="phrase">where <em class="replaceable"><code>role_specification</code></em> can be:</span>
+
+    <em class="replaceable"><code>role_name</code></em>
+  | CURRENT_ROLE
+  | CURRENT_USER
+  | SESSION_USER
+
+ALTER GROUP <em class="replaceable"><code>group_name</code></em> RENAME TO <em class="replaceable"><code>new_name</code></em>
+</pre></div><div class="refsect1" id="id-1.9.3.15.5"><h2>Description</h2><p>
+   <code class="command">ALTER GROUP</code> changes the attributes of a user group.
+   This is an obsolete command, though still accepted for backwards
+   compatibility, because groups (and users too) have been superseded by the
+   more general concept of roles.
+  </p><p>
+   The first two variants add users to a group or remove them from a group.
+   (Any role can play the part of either a <span class="quote">“<span class="quote">user</span>”</span> or a
+   <span class="quote">“<span class="quote">group</span>”</span> for this purpose.)  These variants are effectively
+   equivalent to granting or revoking membership in the role named as the
+   <span class="quote">“<span class="quote">group</span>”</span>; so the preferred way to do this is to use
+   <a class="link" href="sql-grant.html" title="GRANT"><code class="command">GRANT</code></a> or
+   <a class="link" href="sql-revoke.html" title="REVOKE"><code class="command">REVOKE</code></a>.
+  </p><p>
+   The third variant changes the name of the group.  This is exactly
+   equivalent to renaming the role with
+   <a class="link" href="sql-alterrole.html" title="ALTER ROLE"><code class="command">ALTER ROLE</code></a>.
+  </p></div><div class="refsect1" id="id-1.9.3.15.6"><h2>Parameters</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="replaceable"><code>group_name</code></em></span></dt><dd><p>
+      The name of the group (role) to modify.
+     </p></dd><dt><span class="term"><em class="replaceable"><code>user_name</code></em></span></dt><dd><p>
+      Users (roles) that are to be added to or removed from the group.
+      The users must already exist; <code class="command">ALTER GROUP</code> does not
+      create or drop users.
+     </p></dd><dt><span class="term"><em class="replaceable"><code>new_name</code></em></span></dt><dd><p>
+      The new name of the group.
+     </p></dd></dl></div></div><div class="refsect1" id="id-1.9.3.15.7"><h2>Examples</h2><p>
+   Add users to a group:
+
+</p><pre class="programlisting">
+ALTER GROUP staff ADD USER karl, john;
+</pre><p>
+
+   Remove a user from a group:
+
+</p><pre class="programlisting">
+ALTER GROUP workers DROP USER beth;
+</pre></div><div class="refsect1" id="id-1.9.3.15.8"><h2>Compatibility</h2><p>
+   There is no <code class="command">ALTER GROUP</code> statement in the SQL
+   standard.
+  </p></div><div class="refsect1" id="id-1.9.3.15.9"><h2>See Also</h2><span class="simplelist"><a class="xref" href="sql-grant.html" title="GRANT"><span class="refentrytitle">GRANT</span></a>, <a class="xref" href="sql-revoke.html" title="REVOKE"><span class="refentrytitle">REVOKE</span></a>, <a class="xref" href="sql-alterrole.html" title="ALTER ROLE"><span class="refentrytitle">ALTER ROLE</span></a></span></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="sql-alterfunction.html" title="ALTER FUNCTION">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="sql-commands.html" title="SQL Commands">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="sql-alterindex.html" title="ALTER INDEX">Next</a></td></tr><tr><td width="40%" align="left" valign="top">ALTER FUNCTION </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"> ALTER INDEX</td></tr></table></div></body></html>
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