pardon me for my confusing question. Even I don't know how to say it correctly so i'll just illustrate it
Column A Column B
A Mark
A
B John
B Gina
C
C Kevin
D Joy
D
D Mary
Now, I want to count the number of data on the column B depending on what is on the column A (they are on the same row).
Column C Column D
A 1
B 2
C 1
D 2
Thanks!
