How do I count the unique Dates (Col B) for each project (Col A)? I'm expecting 6 for Project A and 2 for Project B (in the sample below).
<colgroup><col><col><col><col><col></colgroup><tbody>
</tbody>
Project | Sprint | Project | # of Sprints | |
A | 9/17/2018 | A | 6 | |
A | 10/1/2018 | B | 2 | |
A | 10/1/2018 | |||
A | 10/1/2018 | |||
A | 10/15/2018 | |||
A | 10/15/2018 | |||
A | 10/29/2018 | |||
A | 10/29/2018 | |||
A | 10/29/2018 | |||
A | 11/12/2018 | |||
A | 11/12/2018 | |||
A | 11/26/2018 | |||
A | 11/26/2018 | |||
A | 11/26/2018 | |||
A | ||||
A | 12/10/2018 | |||
B | 11/12/2018 | |||
B | 11/12/2018 | |||
B | 11/26/2018 | |||
B |
<colgroup><col><col><col><col><col></colgroup><tbody>
</tbody>