Counting Duplicate Values Only Once in a Column B After Date & by Matching Criteria in Column A

D_Nelson

New Member
Joined
Nov 30, 2020
Messages
5
Office Version
  1. 2019
Platform
  1. Windows
A little complex but I was looking for something to make it more simple for me to log trucks being parked at the yard.

In the example below, I look at Column A, find each vehicle (Say Truck 1) and then look at the corresponding value in Column B (Date #) and count it exactly once. Truck 1 has Sub Date # "10/15/2020" found in row 2, 4 and row 5 so I only count the occurrence of each individual Sub Date # exactly once. Truck 1 has Sub Date # 10/20/2020 occuring at row 8 and Sub # 10/27/2020 at row 11. The value returned for unique subscriptions associated with all the Truck 1 names is exactly 3 since we ignored the one occurrence of a duplicate (the Sub #1 ).

But then I would like to filter for those unique dates after 10/18/2020 (as an example)

Hopefully what I explained makes sense

The closest thing I found was in this article Counting Duplicate Values Only Once in a Column B by Matching Criteria in Column A

Which can filter individual dates by vehicle, but I'm not sure how to then make it happen after a particular date.
"Try

Array formula in E2 copied down
=SUM(IF(FREQUENCY(IF(A$2:A$12=D2,MATCH(B$2:B$12,B$2:B$12,0)),ROW(B$2:B$12)-ROW(B$2)+1),1))
Ctrl+Shift+Enter

If the column Sub# contains only numbers, not text, you can replace MATCH(B$2:B$12,B$2:B$12,0) by B$2:B$12"

ABCDE
1VehiclesDateName# Unique Date After Specific Date (e.g. 10/18/2020)
2Truck 110/15/2020Truck 12
3Truck 210/15/2020Truck 21
4Truck 110/15/2020Truck 33
5Truck 110/15/2020
6Truck 310/20/2020
7Truck 210/20/2020
8Truck 110/20/2020
9Truck 210/20/2020
10Truck 310/21/2020
11Truck 110/27/2020
12Truck 310/29/2020
 

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Domenic

MrExcel MVP
Joined
Mar 10, 2004
Messages
19,500
Try the following...

VBA Code:
E2, confirmed with CONTROL+SHIFT+ENTER, and copied down:

=SUM(IF(FREQUENCY(IF($A$2:$A$12=D2,IF($B$2:$B$12>DATE(2020,10,18),IF($B$2:$B$12<>"",MATCH($B$2:$B$12,$B$2:$B$12,0)))),ROW($B$2:$B$12)-ROW($B$2)+1)>0,1))

or

=SUM(IF(FREQUENCY(IF($A$2:$A$12=D2,IF($B$2:$B$12>DATE(2020,10,18),$B$2:$B$12)),IF($A$2:$A$12=D2,IF($B$2:$B$12>DATE(2020,10,18),$B$2:$B$12)))>0,1))

However, using dynamic array formulas...

VBA Code:
E2, copied down:

=COUNT(UNIQUE(FILTER($B$2:$B$12,($A$2:$A$12=D2)*($B$2:$B$12>DATE(2020,10,18)))))

Hope this helps!
 

D_Nelson

New Member
Joined
Nov 30, 2020
Messages
5
Office Version
  1. 2019
Platform
  1. Windows
This works perfectly thank you so much
 

D_Nelson

New Member
Joined
Nov 30, 2020
Messages
5
Office Version
  1. 2019
Platform
  1. Windows
You're very welcome, cheers!
Try the following...

VBA Code:
E2, confirmed with CONTROL+SHIFT+ENTER, and copied down:

=SUM(IF(FREQUENCY(IF($A$2:$A$12=D2,IF($B$2:$B$12>DATE(2020,10,18),IF($B$2:$B$12<>"",MATCH($B$2:$B$12,$B$2:$B$12,0)))),ROW($B$2:$B$12)-ROW($B$2)+1)>0,1))

or

=SUM(IF(FREQUENCY(IF($A$2:$A$12=D2,IF($B$2:$B$12>DATE(2020,10,18),$B$2:$B$12)),IF($A$2:$A$12=D2,IF($B$2:$B$12>DATE(2020,10,18),$B$2:$B$12)))>0,1))

However, using dynamic array formulas...

VBA Code:
E2, copied down:

=COUNT(UNIQUE(FILTER($B$2:$B$12,($A$2:$A$12=D2)*($B$2:$B$12>DATE(2020,10,18)))))

Hope this helps!
Just curious could something like this be applied in the header cells as an array for when the company expands and gets more trucks or when we outsource to other logistic companies rather than manually copying the formula?
 
Last edited by a moderator:

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