String comparison in BODS along with commas

Hi All,

I need help on the below scenario in BODS.

Input: col1    col2

           a          a,b,c

            a,b     x,a,b

            x,y     abc

I want to compare col1 with col2 values.

Condition:If anyone of the values are matching then it that values should give output.

eg: col2 contains 'a' that means it is matching.

Request your utmost help.

Thanks,

Praveen