Execute Query string in postgreSQL
<p>I have a query string in variable</p>

<p>suppose <code>Select Now()</code>;
I want to execute it same like SQL do.
I use</p>

<pre><code>Execute 'Select Now()';
</code></pre>

<p>But It throws an exception</p>

<blockquote>
  <p>prepared statement "SELECT now()" does not exist</p>
</blockquote>

<p>and not allow me to execute it.</p>

<p>Is there any way to do that?</p>