Posts by Vitor Marcelino • 3 points

• 0

  votes

  1

  answer

  200

  views

  Q: Doubt group by + SUM function

  I have a problem putting together a query in my database mysql for attendance at an event. I have a participating table where I have the participant’s information, and I have the attendees' presence…

  mysql group-by count

  asked 8 years, 7 months ago Vitor Marcelino 3