title: SQL copy data from one column to another
body: <p>In one table called <code>xt_products</code> with several columns.</p>
  <p>The ones I am interested are</p>
  <p><code>products_ean</code> (varchar 128) and <code>products_model</code> (varchar 255)</p>
  <p>I would like to copy the values from <code>products_model</code> to <code>products_ean</code> IF the the entry in <code>products_model</code> has more than 10 characters.</p>
  <p>e.g. <code>products_model</code> has the value of '1-2-3' then not copy
  if <code>products_model</code> has the value of '12345678910' then copy</p>
  <p>Thanks
  Andreas</p>