title: SET extra_float_digits = 3 in postgresql
body: <p>Whenever I start Postgresql DB engine, I have almost 7-8 queries running in the background <code>SET extra_float_digits = 3</code></p>
  
  <p>I am not sure why these are running all the times. I know that the extra_float_digits variable adjusts the number of digits displayed for floating-point values in Postgresql, however I am not sure why these queries run in the background when I start the DB engine.</p>
  
  <p>I already have the extra_float_digits = 3 in the config file. Even if I comment it out, these queries still run in the background.. </p>
  
  <p>need help..Thanks</p>