Many new MySQL columns with one form

Question

I want to put a form on my website to let users add events to their private calendar. For that, I would like to create a new column in MySQL each time the user add an event (always with the same form, one column for each event title, for example...)

Is it possible?

Answer 1

It is possible using ALTER TABLE

However, would it not be better to have a table called 'events' that holds all of them, with a column called 'userid' which contains the ID of the user the event belongs to.

Then you would know that every event exists in that table, and to get a users events you simply query that one table for rows that contain the users ID in the userid column.

Answer 2

Yes, but it's a very very very bad idea.

Add a table userevents, add a record to that. To get the output you want, have look for how to do pivot queries in mysql.

Answer 3

For this type of app. You can use magic websql (client side database)!

Web SQL Database is a web page API for storing data in databases that can queried using a variant of SQL.

More: http://html5doctor.com/introducing-web-sql-databases/