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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 POLICY</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-alteropfamily.html" title="ALTER OPERATOR FAMILY" /><link rel="next" href="sql-alterprocedure.html" title="ALTER PROCEDURE" /></head><body id="docContent" class="container-fluid col-10"><div xmlns="http://www.w3.org/TR/xhtml1/transitional" class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">ALTER POLICY</th></tr><tr><td width="10%" align="left"><a accesskey="p" href="sql-alteropfamily.html" title="ALTER OPERATOR FAMILY">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 14.5 Documentation">Home</a></td><td width="10%" align="right"> <a accesskey="n" href="sql-alterprocedure.html" title="ALTER PROCEDURE">Next</a></td></tr></table><hr></hr></div><div class="refentry" id="SQL-ALTERPOLICY"><div class="titlepage"></div><a id="id-1.9.3.23.1" class="indexterm"></a><div class="refnamediv"><h2><span class="refentrytitle">ALTER POLICY</span></h2><p>ALTER POLICY — change the definition of a row-level security policy</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><pre class="synopsis">
+ALTER POLICY <em class="replaceable"><code>name</code></em> ON <em class="replaceable"><code>table_name</code></em> RENAME TO <em class="replaceable"><code>new_name</code></em>
+
+ALTER POLICY <em class="replaceable"><code>name</code></em> ON <em class="replaceable"><code>table_name</code></em>
+    [ TO { <em class="replaceable"><code>role_name</code></em> | PUBLIC | CURRENT_ROLE | CURRENT_USER | SESSION_USER } [, ...] ]
+    [ USING ( <em class="replaceable"><code>using_expression</code></em> ) ]
+    [ WITH CHECK ( <em class="replaceable"><code>check_expression</code></em> ) ]
+</pre></div><div class="refsect1" id="id-1.9.3.23.5"><h2>Description</h2><p>
+   <code class="command">ALTER POLICY</code> changes the definition of an existing
+   row-level security policy.  Note that <code class="command">ALTER POLICY</code>
+   only allows the set of roles to which the policy applies and the
+   <code class="literal">USING</code> and <code class="literal">WITH CHECK</code> expressions to
+   be modified.  To change other properties of a policy, such as the command
+   to which it applies or whether it is permissive or restrictive, the policy
+   must be dropped and recreated.
+  </p><p>
+   To use <code class="command">ALTER POLICY</code>, you must own the table that
+   the policy applies to.
+  </p><p>
+   In the second form of <code class="command">ALTER POLICY</code>, the role list,
+   <em class="replaceable"><code>using_expression</code></em>, and
+   <em class="replaceable"><code>check_expression</code></em> are replaced
+   independently if specified.  When one of those clauses is omitted, the
+   corresponding part of the policy is unchanged.
+  </p></div><div class="refsect1" id="id-1.9.3.23.6"><h2>Parameters</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="replaceable"><code>name</code></em></span></dt><dd><p>
+      The name of an existing policy to alter.
+     </p></dd><dt><span class="term"><em class="replaceable"><code>table_name</code></em></span></dt><dd><p>
+      The name (optionally schema-qualified) of the table that the
+      policy is on.
+     </p></dd><dt><span class="term"><em class="replaceable"><code>new_name</code></em></span></dt><dd><p>
+      The new name for the policy.
+     </p></dd><dt><span class="term"><em class="replaceable"><code>role_name</code></em></span></dt><dd><p>
+      The role(s) to which the policy applies.  Multiple roles can be
+      specified at one time.  To apply the policy to all roles,
+      use <code class="literal">PUBLIC</code>.
+     </p></dd><dt><span class="term"><em class="replaceable"><code>using_expression</code></em></span></dt><dd><p>
+      The <code class="literal">USING</code> expression for the policy.
+      See <a class="xref" href="sql-createpolicy.html" title="CREATE POLICY"><span class="refentrytitle">CREATE POLICY</span></a> for details.
+     </p></dd><dt><span class="term"><em class="replaceable"><code>check_expression</code></em></span></dt><dd><p>
+      The <code class="literal">WITH CHECK</code> expression for the policy.
+      See <a class="xref" href="sql-createpolicy.html" title="CREATE POLICY"><span class="refentrytitle">CREATE POLICY</span></a> for details.
+     </p></dd></dl></div></div><div class="refsect1" id="id-1.9.3.23.7"><h2>Compatibility</h2><p>
+   <code class="command">ALTER POLICY</code> is a <span class="productname">PostgreSQL</span> extension.
+  </p></div><div class="refsect1" id="id-1.9.3.23.8"><h2>See Also</h2><span class="simplelist"><a class="xref" href="sql-createpolicy.html" title="CREATE POLICY"><span class="refentrytitle">CREATE POLICY</span></a>, <a class="xref" href="sql-droppolicy.html" title="DROP POLICY"><span class="refentrytitle">DROP POLICY</span></a></span></div></div><div xmlns="http://www.w3.org/TR/xhtml1/transitional" class="navfooter"><hr></hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="sql-alteropfamily.html" title="ALTER OPERATOR FAMILY">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-alterprocedure.html" title="ALTER PROCEDURE">Next</a></td></tr><tr><td width="40%" align="left" valign="top">ALTER OPERATOR FAMILY </td><td width="20%" align="center"><a accesskey="h" href="index.html" title="PostgreSQL 14.5 Documentation">Home</a></td><td width="40%" align="right" valign="top"> ALTER PROCEDURE</td></tr></table></div></body></html>
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