how to interpret it.
  </para>

  <table id="pg-stat-progress-copy-view" xreflabel="pg_stat_progress_copy">
   <title><structname>pg_stat_progress_copy</structname> View</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>pid</structfield> <type>integer</type>
      </para>
      <para>
       Process ID of backend.
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>datid</structfield> <type>oid</type>
      </para>
      <para>
       OID of the database to which this backend is connected.
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>datname</structfield> <type>name</type>
      </para>
      <para>
       Name of the database to which this backend is connected.
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>relid</structfield> <type>oid</type>
      </para>
      <para>
       OID of the table on which the <command>COPY</command> command is
       executed. It is set to <literal>0</literal> if copying from a
       <command>SELECT</command> query.
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>command</structfield> <type>text</type>
      </para>
      <para>
       The command that is running: <literal>COPY FROM</literal>, or
       <literal>COPY TO</literal>.
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>type</structfield> <type>text</type>
      </para>
      <para>
       The I/O type that the data is read from or written to:
       <literal>FILE</literal>, <literal>PROGRAM</literal>,
       <literal>PIPE</literal> (for <command>COPY FROM STDIN</command> and
       <command>COPY TO STDOUT</command>), or <literal>CALLBACK</literal>
       (used for example during the initial table synchronization in
       logical replication).
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>bytes_processed</structfield> <type>bigint</type>
      </para>
      <para>
       Number of bytes already processed by <command>COPY</command> command.
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>bytes_total</structfield> <type>bigint</type>
      </para>
      <para>
       Size of source file for <command>COPY FROM</command> command in bytes.
       It is set to <literal>0</literal> if not available.
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>tuples_processed</structfield> <type>bigint</type>
      </para>
      <para>
       Number of tuples already processed by <command>COPY</command> command.
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>tuples_excluded</structfield> <type>bigint</type>
      </para>
      <para>
       Number of tuples not processed because they were excluded by the
       <command>WHERE</command> clause of the <command>COPY</command> command.
      </para></entry>
     </row>

     <row>
      <entry role="catalog_table_entry"><para role="column_definition">
       <structfield>tuples_skipped</structfield> <type>bigint</type>
      </para>
      <para>
       Number of tuples skipped because they contain malformed data.