</para>

<para>

The <literal>NONE</literal> and <literal>RESET</literal> forms reset the current

user identifier to be the current session user identifier.

These forms can be executed by any user.

<literal>SET ROLE NONE</literal> sets the current user identifier to the

current session user identifier, as returned by

<function>session_user</function>. <literal>RESET ROLE</literal> sets the

current user identifier to the connection-time setting specified by the

<link linkend="libpq-connect-options">command-line options</link>,

<link linkend="sql-alterrole"><command>ALTER ROLE</command></link>, or

<link linkend="sql-alterdatabase"><command>ALTER DATABASE</command></link>,

if any such settings exist. Otherwise, <literal>RESET ROLE</literal> sets

the current user identifier to the current session user identifier. These

forms can be executed by any user.

</para>

</refsect1>