<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >ALTER POLICY</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK REV="MADE" HREF="mailto:pgsql-docs@postgresql.org"><LINK REL="HOME" TITLE="PostgreSQL 9.6.21 Documentation" HREF="index.html"><LINK REL="UP" TITLE="SQL Commands" HREF="sql-commands.html"><LINK REL="PREVIOUS" TITLE="ALTER OPERATOR FAMILY" HREF="sql-alteropfamily.html"><LINK REL="NEXT" TITLE="ALTER ROLE" HREF="sql-alterrole.html"><LINK REL="STYLESHEET" TYPE="text/css" HREF="stylesheet.css"><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-1"><META NAME="creation" CONTENT="2021-02-27T18:26:08"></HEAD ><BODY CLASS="REFENTRY" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="4" ALIGN="center" VALIGN="bottom" ><A HREF="index.html" >PostgreSQL 9.6.21 Documentation</A ></TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="top" ><A TITLE="ALTER OPERATOR FAMILY" HREF="sql-alteropfamily.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="10%" ALIGN="left" VALIGN="top" ><A HREF="sql-commands.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="60%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="20%" ALIGN="right" VALIGN="top" ><A TITLE="ALTER ROLE" HREF="sql-alterrole.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="SQL-ALTERPOLICY" ></A >ALTER POLICY</H1 ><DIV CLASS="REFNAMEDIV" ><A NAME="AEN75187" ></A ><H2 >Name</H2 >ALTER POLICY -- change the definition of a row level security policy</DIV ><DIV CLASS="REFSYNOPSISDIV" ><A NAME="AEN75190" ></A ><H2 >Synopsis</H2 ><PRE CLASS="SYNOPSIS" >ALTER POLICY <TT CLASS="REPLACEABLE" ><I >name</I ></TT > ON <TT CLASS="REPLACEABLE" ><I >table_name</I ></TT > RENAME TO <TT CLASS="REPLACEABLE" ><I >new_name</I ></TT > ALTER POLICY <TT CLASS="REPLACEABLE" ><I >name</I ></TT > ON <TT CLASS="REPLACEABLE" ><I >table_name</I ></TT > [ TO { <TT CLASS="REPLACEABLE" ><I >role_name</I ></TT > | PUBLIC | CURRENT_USER | SESSION_USER } [, ...] ] [ USING ( <TT CLASS="REPLACEABLE" ><I >using_expression</I ></TT > ) ] [ WITH CHECK ( <TT CLASS="REPLACEABLE" ><I >check_expression</I ></TT > ) ]</PRE ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN75200" ></A ><H2 >Description</H2 ><P > <TT CLASS="COMMAND" >ALTER POLICY</TT > changes the definition of an existing row-level security policy. </P ><P > To use <TT CLASS="COMMAND" >ALTER POLICY</TT >, you must own the table that the policy applies to. </P ><P > In the second form of <TT CLASS="COMMAND" >ALTER POLICY</TT >, the role list, <TT CLASS="REPLACEABLE" ><I >using_expression</I ></TT >, and <TT CLASS="REPLACEABLE" ><I >check_expression</I ></TT > 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" ><A NAME="AEN75210" ></A ><H2 >Parameters</H2 ><P ></P ><DIV CLASS="VARIABLELIST" ><DL ><DT ><TT CLASS="REPLACEABLE" ><I >name</I ></TT ></DT ><DD ><P > The name of an existing policy to alter. </P ></DD ><DT ><TT CLASS="REPLACEABLE" ><I >table_name</I ></TT ></DT ><DD ><P > The name (optionally schema-qualified) of the table that the policy is on. </P ></DD ><DT ><TT CLASS="REPLACEABLE" ><I >new_name</I ></TT ></DT ><DD ><P > The new name for the policy. </P ></DD ><DT ><TT CLASS="REPLACEABLE" ><I >role_name</I ></TT ></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 <TT CLASS="LITERAL" >PUBLIC</TT >. </P ></DD ><DT ><TT CLASS="REPLACEABLE" ><I >using_expression</I ></TT ></DT ><DD ><P > The <TT CLASS="LITERAL" >USING</TT > expression for the policy. See <A HREF="sql-createpolicy.html" >CREATE POLICY</A > for details. </P ></DD ><DT ><TT CLASS="REPLACEABLE" ><I >check_expression</I ></TT ></DT ><DD ><P > The <TT CLASS="LITERAL" >WITH CHECK</TT > expression for the policy. See <A HREF="sql-createpolicy.html" >CREATE POLICY</A > for details. </P ></DD ></DL ></DIV ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN75248" ></A ><H2 >Compatibility</H2 ><P > <TT CLASS="COMMAND" >ALTER POLICY</TT > is a <SPAN CLASS="PRODUCTNAME" >PostgreSQL</SPAN > extension. </P ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN75253" ></A ><H2 >See Also</H2 ><A HREF="sql-createpolicy.html" >CREATE POLICY</A >, <A HREF="sql-droppolicy.html" >DROP POLICY</A ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="sql-alteropfamily.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="sql-alterrole.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >ALTER OPERATOR FAMILY</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="sql-commands.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >ALTER ROLE</TD ></TR ></TABLE ></DIV ></BODY ></HTML >