Can you split/explode a field in a MySQL query?

Question

I have to create a report on some student completions. The students each belong to one client. Here are the tables (simplified for this question).

CREATE TAB         


        

Answer 1

Building on Alwin Kesler's solution, here's a bit of a more practical real world example.

Assuming that the comma separated list is in my_table.list, and it's a listing of ID's for my_other_table.id, you can do something like:

SELECT 
    * 
FROM 
    my_other_table 
WHERE 
    (SELECT list FROM my_table WHERE id = '1234') REGEXP CONCAT(',?', my_other_table.id, ',?');