title: Postgres regular expression for a number of elements
body: <p>I am trying to write a Postgres regular expression to find records where a column has numbers only and a string length of more than 5. </p>
  
  <p>E.g.: column <code>hello</code> has <code>'0 1 1 2 1'</code> or <code>'12345'</code>.</p>
  
  <p>Or to keep it simple I want a regular express that will identify rows that has 5 or more numbers in it.</p>
  
  <p>How do I write that regex?</p>