title: How to count id numbers separated by a comma from one cell
body: <p>I have table with 5 columns and one of it is column called product_id where i store id's spearated by a comma like:</p>
  
  <p>1,23,43</p>
  
  <p>is that possible to count that numbers by mysql query? I need to know it to make pagination of products...</p>
  
  <p>i need to know that there is 3 ids (3 products)</p>
  
  <p>best regards
  m.</p>