google sheets: use numbered column to list duplicates in specific order

[rinkjames]

Hello,

I have a sheet of fictional data here: duplicates. Below is a screenshot for convenience.

I'd like to list, in the duplicate column, duplicates of values in the id column, with one condition: that the corresponding row in the complete column must contain a 1, not a 0. Furthermore, I'd like to list duplicates in ascending order according to the # column, so that rows with lower numbers in the # column have their duplicate value listed before rows with higher numbers in the # column — even if I change the sort order of the columns using a data filter.

All values are hard-coded, except for my current working formula in the duplicate column; cell F2 contains:

=IF(SUMPRODUCT($D$2:$D$21=D2,$E$2:$E$21=1)>1,E2*(SUMPRODUCT($D$2:$D2=D2,$E$2:$E2=1)-1),0)

To illustrate the problem, the columns in the above sheet are currently sorted in ascending order acording to column #, producing the following desired result in the duplicates column:

#    name_first   name_last   id           complete   duplicate
4    Dominique    Jordan      kDgDIFL2St   0          0
7    Dominique    Jordan      kDgDIFL2St   1          0
15   Dominique    Jordan      kDgDIFL2St   1          1
19   Dominique    Jordan      kDgDIFL2St   1          2

However, if I use the data filter to change the sort order of the columns —e.g. the # column in descending order — then my current working formula produces the follwing undesired result in the duplicates column:

#    name_first   name_last   id           complete   duplicate
19   Dominique    Jordan      kDgDIFL2St   1          0
15   Dominique    Jordan      kDgDIFL2St   1          1
7    Dominique    Jordan      kDgDIFL2St   1          2
4    Dominique    Jordan      kDgDIFL2St   0          0

As I hope the above illustrates, the specific rows marked as duplicates change when I change the sort order of the columns (e.g. blue from 2 to 0; yellow from 0 to 2). I'd like to adjust the formula in the duplicate column to avoid this and always produce the former of the two results above irrespective of the sort order of the columns. Any help would be appreciated.

Kind regards,
James

 

[Fluff]

How about

=IFNA(MATCH(A2,SORT(FILTER($A$2:$A$21,($D$2:$D$21=D2)*($E$2:$E$21=1))),0)-1,0)

 

[rinkjames]

How about

=IFNA(MATCH(A2,SORT(FILTER($A$2:$A$21,($D$2:$D$21=D2)*($E$2:$E$21=1))),0)-1,0)

Wonderful — thanks.

 

[Fluff]

You're welcome & thanks for the feedback.