MySql REGEXP to match two comma separated strings

Question

I have a table containing following values :

id    |    value      |
-----------------------
1     | 1,2,5,8,12,20 |    
2     | 11,25,26,28   |    
------------         


        

Answer 1

REGEXP '(^|,)(1|3|6|7|11)(,|$)'

Will match all values containing one number of the sequence 1,3,6,7,11.

You should not use one column to save several values. Normalize data!

Edited answer