title: MySql: Some queries produce: SQLSTATE[28000]: Invalid authorization specification: 1045 Access denied for user
body: <p>I've just moved applications to a replicated database and for some, but not all, queries I get the following error message: </p>
  
  <pre><code>SQLSTATE[28000]: Invalid authorization specification: 1045 Access denied for user
  </code></pre>
  
  <p>Many other queries work and reviewing the credentials are indeed correct as they work for most queries.</p>
  
  <p>Any ideas what might be causing this error message, given that most queries are successful?</p>