SQL group by date, but get dates w/o records too

Question

Is there an easy way to do a GROUP BY DATE(timestamp) that includes all days in a period of time, regardless of whether there are any records associated with th

Answer 1

One method is to create a calendar table and join against it.

I would create it permanently, and then create a task that will insert new dates, it could be done weekly, daily, monthly, etc.

Note, that I am assuming that you are converting your timestamp into a date.