title: Postgres decimal precision VS Excel
body: <p>I am looking for any documentation on the decimal precision in Postgres and Excel. </p>
  
  <p>I have a database which was imported through excel. I am finding that the <code>SUM()</code> result in excel is slightly different than the <code>SUM()</code> method in Postgres (usually at the 3rd or 4th decimal place depending on what i include or exclude from the data. I am curious to see if this is because of a floating point precision issue, or if there may be some small differences resulting from the import.</p>