t code (0 for text, 1 for binary) associated with
       each column of the copy operation.  The per-column format codes
       will always be zero when the overall copy format is textual, but
       the binary format can support both text and binary columns.
       (However, as of the current implementation of <code class="command">COPY</code>,
       only binary columns appear in a binary copy; so the per-column
       formats always match the overall format at present.)
      </p></dd></dl></div><p>
  </