title: While inserting multiple rows what does the statement 'select 1 from dual' do?
body: <p>While inserting multiple rows into a table using the following style :</p>
  
  <pre><code>insert all
  
  into ghazal_current (GhazalName,Rating) values('Ajab Apna Haal Hota Jo Visaal-e-Yaar Hota',5)
  into ghazal_current (GhazalName,Rating) values('Apne Hothon Par Sajana Chahta Hun',4)
  into ghazal_current (GhazalName,Rating) values('Shaam Se Aankh Mein Nami Si Hai',4)
  into ghazal_current (GhazalName,Rating) values('Tumhe Yaad Ho Ke Na Yaad Ho',3)
  
  select 1 from dual;
  </code></pre>
  
  <p>What does the statement <code>select 1 from dual</code> mean ? What is it here for ?</p>