title: What, exactly, does allowMultiQueries do?
body: <p>Adding <code>allowMultiQueries=true</code> to the JDBC string makes MySQL accept Statements with multiple queries.</p>
  
  <p>But what exactly does this do? Is there any benefit to this? </p>
  
  <p>Perhaps it reduces the delay due to round trips? Something like</p>
  
  <pre><code>LOCK
  UPDATE ...
  UNLOCK
  </code></pre>
  
  <p>which if done in one statements holds the lock for less time.</p>
  
  <p>When, if ever, would I want to combine queries in a single Statement, rather than in separate ones?</p>