title: [Amazon](500310) Invalid operation: function radians(text) does not exist
body: <p>I am using "radians" in my Redshift query but getting error as " Invalid operation: function radians(text) does not exist".</p>
  
  <p>I am calculating some values and then "redians" will be implemented on the result, for example: radians((val2 - val1) / 2)), I do not know why it is considering the result as "text"!!</p>