title: Calculating the size of a column type in Postgresql
body: <p>I am trying to figure out how to determine the size of a specific column in database for instance I have two columns called sourceip, destinationip that are both 16 byte fields.  </p>
  
  <p>I thought this would be somewhere in the information_schema or \d+ but I cannot find a specific command to isolate the size of each column type.  </p>
  
  <blockquote>
    <p>Can you calculate column type size in database or do you just have to reference the byte size for each type in the Postgresql documentation?  </p>
  </blockquote>