title: MYSQL select where count > 1
body: <p>Need to execute query to find rowns with 3rd column value count > 1. Example:</p>
  
  <p>Table:</p>
  
  <pre><code>     col1   col2    col3  
  ------------------------  
  1.   val1   val2    val3
  2.  val11  val21    val3
  3.  val12  val22   val31
  4.  val13  val23   val32
  5.  val14  val24   val32
  </code></pre>
  
  <p>Result will be rows 1,2,4,5 because we have values in col3 with count > 1</p>