<title><literal>sql_parts</literal></title>

  <para>
   The table <literal>sql_parts</literal> contains information about
   which of the several parts of the SQL standard are supported by
   <productname>PostgreSQL</productname>.
  </para>

  <table>
   <title><structname>sql_parts</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>feature_id</structfield> <type>character_data</type>
      </para>
      <para>
       An identifier string containing the number of the part
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>feature_name</structfield> <type>character_data</type>
      </para>
      <para>
       Descriptive name of the part
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>is_supported</structfield> <type>yes_or_no</type>
      </para>
      <para>
       <literal>YES</literal> if the part is fully supported by the
       current version of <productname>PostgreSQL</productname>,
       <literal>NO</literal> if not
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>is_verified_by</structfield> <type>character_data</type>
      </para>
      <para>
       Always null, since the <productname>PostgreSQL</productname> development group does not
       perform formal testing of feature conformance
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>comments</structfield> <type>character_data</type>
      </para>
      <para>
       Possibly a comment about the supported status of the part
      </para></entry>
     </row>
    </tbody>
   </tgroup>
  </table>
 </sect1>

 <sect1 id="infoschema-sql-sizing">
  <title><literal>sql_sizing</literal></title>

  <para>
   The table <literal>sql_sizing</literal> contains information about
   various size limits and maximum values in
   <productname>PostgreSQL</productname>.  This information is
   primarily intended for use in the context of the ODBC interface;
   users of other interfaces will probably find this information to be
   of little use.  For this reason, the individual sizing items are
   not described here; you will find them in the description of the
   ODBC interface.
  </para>

  <table>
   <title><structname>sql_sizing</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>sizing_id</structfield> <type>cardinal_number</type>
      </para>
      <para>
       Identifier of the sizing item
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>sizing_name</structfield> <type>character_data</type>
      </para>
      <para>
       Descriptive name of the sizing item
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>supported_value</structfield> <type>cardinal_number</type>
      </para>
      <para>
       Value of the sizing item, or 0 if the size is unlimited or
       cannot be determined, or null if the features for which the
       sizing item is applicable are not supported
      </para></entry>
     </row>

     <row>