Question

Preface: I’m developing an application that quizzes users on multiple topics. I wish to keep a history of their progress and be able to easily present the user with a daily,weekly and monthly view of their progress on a per topic basis.

The initial design for my table is as follows:

CREATE TABLE IF NOT EXISTS `user_topics` (
  `ProgressID` int(11) NOT NULL,
  `UserID` int(11) NOT NULL,
  `TopicID` int(11) NOT NULL,
  `Level` decimal(3,1) NOT NULL,
  `TotalCorrect` int(11) NOT NULL,
  `QuestionsAsked` int(11) NOT NULL,
  `DateTime` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
   PRIMARY KEY (`ProgressID`)
 ) 

Am I going along the right lines/ how can I retrieve the data I need to provide a presentable history?

Edit:

I’d want to display a graph with time as a scale and % correct, this would be done when a user clicks to view their monthly/weekly progress for their topics. I would like the load time between viewing weekly/ monthly data per topic pretty transparent.

Should the data be retrieved in a single call(just select the rows with from date x until now) then then leave it up to the individual client to organise the data into days/months etc then present the data?

Answer 1

you can use date_between to query for all progress records betweentwo dates with something like this:

SELECT * FROM 'user_topics' WHERE 'DateTime' between '2008-12-23' AND '2008-12-25';

here is the mysql documentation for ‘between … and …’

So now, using some graphing tools, you could get all the progress for the last day/week/month/year and present their progress.