ELECT '[4,4]'::int4range;

-- includes no points (and will be normalized to 'empty')
SELECT '[4,4)'::int4range;
</pre><p>
  </p><p>
   The input for a multirange is curly brackets (<code class="literal">{</code> and
   <code class="literal">}</code>) containing zero or more valid ranges,
   separated by commas. Whitespace is permitted around the brackets and
   commas. This is intended to be reminiscent of array syntax, although
   multiranges are much simpler: they have just one dimension and there is
   n