title: Removing leading special characters in Hive
body: <p>I am trying to remove leading special characters (could be -"$&amp;^@_) 
  from <code>"Persi és Levon Cnatówóeez</code> using Hive.</p>
  
  <p><code>select REGEXP_REPLACE('“Persi és Levon Cnatówóeez', '[^a-zA-Z0-9]+', '')</code>
  but this removes all special characters.</p>
  
  <p>I am expecting an output similar to </p>
  
  <p><code>Persi és Levon Cnatówóeez</code></p>