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Postgres documentation
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<refentry id="SQL-REVOKE">
 <refmeta>
  <refentrytitle>REVOKE</refentrytitle>
  <refmiscinfo>SQL - Language Statements</refmiscinfo>
 </refmeta>

 <refnamediv>
  <refname>REVOKE</refname>
  <refpurpose>Revokes access privilege from a user, a group, or all users.</refpurpose>
 </refnamediv>

 <refsynopsisdiv>
<synopsis>
REVOKE { { SELECT | INSERT | UPDATE | DELETE | RULE | REFERENCES | TRIGGER } [,...] | ALL [ PRIVILEGES ] }
    ON [ TABLE ] <replaceable class="PARAMETER">object</replaceable> [, ...]
    FROM { <replaceable class="PARAMETER">username</replaceable> | GROUP <replaceable class="PARAMETER">groupname</replaceable> | PUBLIC } [, ...]
</synopsis>
 </refsynopsisdiv>

 <refsect1 id="SQL-REVOKE-description">
  <title>Description</title>

  <para>
   <command>REVOKE</command> allows the creator of an object to revoke
   permissions granted before, from a users or a group of users.  The
   key word <literal>PUBLIC</literal> means to revoke this privilege
   from all users.
  </para>

  <para>
   See the description of the <xref linkend="sql-grant"> command for
   the meaning of the privilege types.
  </para>
 </refsect1>

 <refsect1 id="SQL-REVOKE-notes">
  <title>Notes</title>

  <para>
   Use <xref linkend="app-psql">'s <command>\z</command> command to
   display the privileges granted on existing objects.  See also <xref
   linkend="sql-grant"> for information about the format.
  </para>
 </refsect1>

 <refsect1 id="SQL-REVOKE-examples">
  <title>Examples</title>

  <para>
   Revoke insert privilege from all users on table
   <literal>films</literal>:

<programlisting>
REVOKE INSERT ON films FROM PUBLIC;
</programlisting>
  </para>

  <para>
   Revoke all privileges from user <literal>manuel</literal> on view <literal>kinds</literal>:

<programlisting>  
REVOKE ALL PRIVILEGES ON kinds FROM manuel;
</programlisting>
  </para>
 </refsect1>

 <refsect1 id="SQL-REVOKE-compatibility">
  <title>Compatibility</title>

  <refsect2>
   <title>SQL92</title>

   <para>
    The compatibility notes of the <xref linkend="sql-grant"> command
    apply analogously to <command>REVOKE</command>.  The syntax summary is:

<synopsis>
REVOKE [ GRANT OPTION FOR ] { SELECT | INSERT | UPDATE | DELETE | REFERENCES }
    ON <replaceable class="parameter">object</replaceable> [ ( <replaceable class="parameter">column</replaceable> [, ...] ) ]
    FROM { PUBLIC | <replaceable class="parameter">username</replaceable> [, ...] }
    { RESTRICT | CASCADE }
</synopsis>
   </para>

   <para> 
    If user1 gives a privilege WITH GRANT OPTION to user2,
    and user2 gives it to user3 then user1 can revoke
    this privilege in cascade using the CASCADE keyword.
    If user1 gives a privilege WITH GRANT OPTION to user2,
    and user2 gives it to user3, then if user1 tries to revoke
    this privilege it fails if he specify the RESTRICT
    keyword.
   </para>
  </refsect2>
 </refsect1>

 <refsect1>
  <title>See Also</title>

  <simpara>
   <xref linkend="sql-grant">
  </simpara>
 </refsect1>

</refentry>

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