title: mysql nested count - how?
body: <p>Here's the initial query:<br>
  <code>SELECT COUNT(column) FROM table GROUP BY column;</code><br>
  This gives me something like the following:<br>
  <code>COUNT(column)</code><br>
  <code>2</code><br>
  <code>4</code><br>
  <code>1</code><br>
  <code>1</code><br>
  <code>3</code><br>
  etc.<br>
  BUT I need to to count all of those together in one number! How could I do that? <code>COUNT(COUNT(column))</code> throws an error: "Invalid use of group function".<br>
  P.S. this is not used in any program, if it was, it would be trivial to count them together.</p>