Generate a report for multiple locations

If I understood what you want, something like this can help:

SELECT location, COUNT(location) as location_count, AVG(review) as review_avg
FROM progrodb.tickets
WHERE datesubmitted BETWEEN '2018-09-01' AND '2018-09-30'
GROUP BY location

I have aliased the count and the average for readability

I think you need smth like this

SELECT location, COUNT(location), AVG(review) 
FROM progrodb.tickets
WHERE datesubmitted BETWEEN '2018-9-1' AND '2018-9-30'
GROUP BY location = 'location'

You can use the following to generate a report for multiple locations:

   $results = $this->db->select('count(location), AVG(review)')
   ->where('datesubmitted BETWEEN "2018-9-1" AND "2018-9-30"')
   ->group_by('location') 
   ->get('tickets')->result();