title: What does +0E0 exactly do when applied to a variable in a MySQL table column?
body: <p>While I was searching for a way to convert any value from a random numeric type MySQL column to a double type column I came accross to a solution mentioned in the following <a href="https://stackoverflow.com/a/32991084/1353723">post</a>. I tested this solution with several numeric types and it seems to work fine. Can anyone explain what this <code>+ 0E0</code> exactly do? Is this solution safe for my needs?</p>