oductname">PostgreSQL</span>
      </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
       <code class="structfield">numeric_scale</code> <code class="type">cardinal_number</code>
      </p>
      <p>
       Always null, since this information is not applied to return data types in <span class="productname">PostgreSQL</span>
      </p></td></tr><tr><td class="catalog_table_entry"><p class="column_definition">
       <code class="structfield">datetime_precision</code> <code cla