Comparing and counting occurences in 2 columns

[Guest]

I have a worksheet with 2 columns of data (non-numeric), I need to count the
occurences of each row in column 2 in column 1. The data in column 2 appears
once and in column one it may appear 1-many times. eg data is like this,
(column 3 is the requested count of column 2 in column 1)

abc abc 1
abcd abcd 2
abcd acd 3
acd ...
acd
acd
...

There's 10,000 rows in column 1 and 3000 rows in column 2

 

[Bondi]

Hi,

You can use CountIf()

=COUNTIF(Column1,Criteria)

Regards,
Bondi

 

[Ardus Petus]

In C1, enter:
=COUNTIF(A:A,B1)
and copy down

HTH