">CHECK</code> and <code class="literal">NOT NULL</code>
        constraints of a partitioned table are always inherited by all its
        partitions.  <code class="literal">CHECK</code> constraints that are marked
        <code class="literal">NO INHERIT</code> are not allowed to be created on
        partitioned tables.
        You cannot drop a <code class="literal">NOT NULL</code> constraint on a
        partition's column if the same constraint is present in the parent
        table.
       </p></li><