<para>
       Description
      </para></entry>
     </row>
    </thead>

    <tbody>
     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>stxoid</structfield> <type>oid</type>
       (references <link linkend="catalog-pg-statistic-ext"><structname>pg_statistic_ext</structname></link>.<structfield>oid</structfield>)
      </para>
      <para>
       Extended statistics object containing the definition for this data
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>stxdinherit</structfield> <type>bool</type>
      </para>
      <para>
       If true, the stats include values from child tables, not just the
       values in the specified relation
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>stxdndistinct</structfield> <type>pg_ndistinct</type>
      </para>
      <para>
       N-distinct counts, serialized as <structname>pg_ndistinct</structname> type
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>stxddependencies</structfield> <type>pg_dependencies</type>
      </para>
      <para>
       Functional dependency statistics, serialized
       as <structname>pg_dependencies</structname> type
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>stxdmcv</structfield> <type>pg_mcv_list</type>
      </para>
      <para>
       MCV (most-common values) list statistics, serialized as
       <structname>pg_mcv_list</structname> type
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>stxdexpr</structfield> <type>pg_statistic[]</type>
      </para>
      <para>
       Per-expression statistics, serialized as an array of
       <structname>pg_statistic</structname> type
      </para></entry>
     </row>
    </tbody>
   </tgroup>
  </table>

 </sect1>

 <sect1 id="catalog-pg-subscription">
  <title><structname>pg_subscription</structname></title>

  <indexterm zone="catalog-pg-subscription">
   <primary>pg_subscription</primary>
  </indexterm>

  <para>
   The catalog <structname>pg_subscription</structname> contains all existing
   logical replication subscriptions.  For more information about logical
   replication see <xref linkend="logical-replication"/>.
  </para>

  <para>
   Unlike most system catalogs, <structname>pg_subscription</structname> is
   shared across all databases of a cluster: there is only one copy
   of <structname>pg_subscription</structname> per cluster, not one per
   database.
  </para>

  <para>
   Access to the column <structfield>subconninfo</structfield> is revoked from
   normal users, because it could contain plain-text passwords.
  </para>

  <table>
   <title><structname>pg_subscription</structname> Columns</title>
   <tgroup cols="1">
    <thead>
     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       Column Type
      </para>
      <para>
       Description
      </para></entry>
     </row>
    </thead>

    <tbody>
     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>oid</structfield> <type>oid</type>
      </para>
      <para>
       Row identifier
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>subdbid</structfield> <type>oid</type>
       (references <link linkend="catalog-pg-database"><structname>pg_database</structname></link>.<structfield>oid</structfield>)
      </para>
      <para>
       OID of the database that the subscription resides in
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">