role="catalog_table_entry"><para role="column_definition">
       <structfield>dbid</structfield> <type>oid</type>
       (references <link linkend="catalog-pg-database"><structname>pg_database</structname></link>.<structfield>oid</structfield>)
      </para>
      <para>
       OID of database in which the statement was executed
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>toplevel</structfield> <type>bool</type>
      </para>
      <para>
       True if the query was executed as a top-level statement
       (always true if <varname>pg_stat_statements.track</varname> is set to
       <literal>top</literal>)
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>queryid</structfield> <type>bigint</type>
      </para>
      <para>
       Hash code to identify identical normalized queries.
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>query</structfield> <type>text</type>
      </para>
      <para>
       Text of a representative statement
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>plans</structfield> <type>bigint</type>
      </para>
      <para>
       Number of times the statement was planned
       (if <varname>pg_stat_statements.track_planning</varname> is enabled,
       otherwise zero)
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>total_plan_time</structfield> <type>double precision</type>
      </para>
      <para>
       Total time spent planning the statement, in milliseconds
       (if <varname>pg_stat_statements.track_planning</varname> is enabled,
       otherwise zero)
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>min_plan_time</structfield> <type>double precision</type>
      </para>
      <para>
       Minimum time spent planning the statement, in milliseconds.
       This field will be zero if <varname>pg_stat_statements.track_planning</varname>
       is disabled, or if the counter has been reset using the
       <function>pg_stat_statements_reset</function> function with the
       <structfield>minmax_only</structfield> parameter set to <literal>true</literal>
       and never been planned since.
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>max_plan_time</structfield> <type>double precision</type>
      </para>
      <para>
       Maximum time spent planning the statement, in milliseconds.
       This field will be zero if <varname>pg_stat_statements.track_planning</varname>
       is disabled, or if the counter has been reset using the
       <function>pg_stat_statements_reset</function> function with the
       <structfield>minmax_only</structfield> parameter set to <literal>true</literal>
       and never been planned since.
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>mean_plan_time</structfield> <type>double precision</type>
      </para>
      <para>
       Mean time spent planning the statement, in milliseconds
       (if <varname>pg_stat_statements.track_planning</varname> is enabled,
       otherwise zero)
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>stddev_plan_time</structfield> <type>double precision</type>
      </para>
      <para>
       Population standard deviation of time spent planning the statement,
       in milliseconds
       (if <varname>pg_stat_statements.track_planning</varname>