Hello,
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I have three columns of data (A,B,C) and I want to add a formula or script to create the data in column D. The 'XXX's are all numerical values and will vary.
Column D should be a sequential list, which restarts at 1 any time that either:
- the value in column A changes, OR
- column A stays the same, but the value in column B goes from something to nothing, together with the value in column C going from nothing to something (or vice versa).
Hope I have explained this well enough - if you can point me in the right direction on this problem it will be much appreciated!
Thanks!
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