I want to number production runs in my system based on a continual count for that year, which is then preceeded by the year (with duplicates sharing the same number). For example, if the data set was

1 Nov 20
1 Nov 20
1 Dec 20
1 Jan 21
1 Feb 21
1 Nov 20

Then the production run number would be as follows:

1 Nov 20    20.01
1 Nov 20    20.01
1 Dec 20    20.02
1 Jan 21    21.01
1 Feb 21    21.02
1 Nov 20    20.01

And I can't for the life of me work out how to do that as an ARRAYFORMULA. Obviously ranking is pretty simple:


But that will give me a continual ranking (without re-starting every year); is there any way to do what I want in an arrayformula?

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.