title: ( ((batterycharging= 0)/duration))
body: <p>Can anyone explain me What this expression does? Thanks in advance</p>
  
  <p>If I ran the following query in MYSQL</p>
  
  <p>select batterycharging, duration, ((batterycharging= 0)/duration)  from 
  battery_info;</p>
  
  <p>The results are the following:</p>
  
  <p><a href="https://i.stack.imgur.com/iZEuY.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/iZEuY.png" alt="enter image description here"></a></p>