title: How to do a product of all rows in a column in Tableau
body: <p>I have a column as below. I want to multiply all values together and get one value across</p>
  
  <pre><code>Yield
  0.90
  0.85
  0.71
  0.25
  
  Yield Total_Prod
  0.90   0.135
  0.85   0.135
  0.71   0.135
  0.25   0.135
  </code></pre>
  
  <p>Where <code>Total_Prod = 0.90*0.85*0.71*0.25</code></p>