Question

I have a table (Requests) with the following fields:

id, requestType, userEmail, date

I want to find the average number of requests per user over a given period (i.e. over the last month). Any suggestions?

Thanks!
Greg

Answer 1

Something like SUM feature will work. Might be a little slow.

SELECT SUM(requestType) FROM Requests WHERE `userEmail` = `userEmail` and `date` BETWEEN `first-date YYYY-MM-DD` AND `second-date YYYY-MM-DD`;  

SQL SUM

I would also recommend, if you have a lot of request, to have one row per user per day and just update the request total for that user.

Edit: If you want the last 30 days something like this query should work. It worked on my test table.

 SELECT SUM(requestType) FROM Requests WHERE `userEmail` = `userEmail` and `date`BETWEEN curdate() - INTERVAL 30 DAY AND curdate();