title: llblgen AND-OR operators presendence AND-OR
body: <p>I want to generate the llblgen form of sql statement below</p>
  
  <pre><code>select * from sometable where
  
  c1=4 AND (  c2 &lt;&gt; 'true' OR c2 IS NULL )
  </code></pre>
  
  <p>But I can't get the exact filter option  operator <code>AND</code> has presendence over opeator <code>OR</code> so
  I'm confused.</p>