title: mysql insert character in 2 position
body: <p>How do I insert a character to string in mysql in 2 positions? 
  I have a string <strong>'25022015'</strong>, and I want insert '/' so that the result is <strong>'25/02/2015'</strong>. I tried <code>INSERT('25022015', 3, 0, '/')</code> and <code>INSERT('25022015', 6, 0,'/')</code>, but i got an error. Please help me</p>