title: Case-insensitive search in Pig Latin
body: <p>Beginner in Pig Latin here.
  I am trying to count the occurrences of multiple strings in an input file.</p>
  
  <p>Now the search has to be case-insensitive. I know there is a <code>LOWER</code> built-in function in pig but how do I use it ?</p>
  
  <p>For example (Input file):</p>
  
  <pre><code>28-Oct-13,7:00PM,Viraj,New to hadoop ! Eager to learn.
  31-Dec-14,3:00PM,‏Vanguard,Designers, Developers, Doers, don't miss this upcoming San Francisco Hadoop
  </code></pre>
  
  <p>I need the count of strings like <code>hadoop, dec, learn, python</code> </p>
  
  <pre><code>hadoop 2
  dec 1
  learn 1
  python 0
  </code></pre>
  
  <p>How do I do this search in pig Latin ?</p>
  
  <p>Thank you.</p>