title: The purpose of 'value' keyword in Oracle Select Statement
body: <p>Whats is the difference between:</p>
  
  <pre><code>select 'mari makan'  value   from dual ;
  </code></pre>
  
  <p>and </p>
  
  <pre><code>select 'mari makan'  from dual ;
  </code></pre>
  
  <p>when querying from oracle table. </p>
  
  <p>Precisely, what is the purpose of <code>value</code> keyword in above statement?</p>