title: Why is there no PRODUCT aggregate function in SQL?
body: <p>Im looking for something like <code>SELECT PRODUCT(table.price) FROM table GROUP BY table.sale</code> similar to how <code>SUM</code> works.</p>
  
  <p>Have I missed something on the documentation, or is there really no <code>PRODUCT</code> function?</p>
  
  <p>If so, why not?</p>
  
  <p>Note: I looked for the function in postgres, mysql and mssql and found none so I assumed all sql does not support it.</p>