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I didn't realize you could group by other columns in the Multi-Row Formula tool. That's a great tip. Here's what my solution looked like before I checked out all the comments and everybody else's solutions
Mine is pretty similar to the given solution (notes in spoiler).
Spoiler
I used a separate date parse and multi-row tool (while the solution did this in one tool). Note, the given solution did not sort the records, so it is assuming that records are already pre-sorted by DeviceID, IDFA, and EventFireDate!
Here's my solution:
Spoiler
For some reason the DateTime tool couldn't recognize the EventFireDate field, so I just parsed them separately and joined back on a RecordID field before combining Date and Time.
From there, the Multi-Row tool provided all functionality needed to group and flag the duplicates.
For some reason the DateTime tool couldn't recognize the EventFireDate field, so I just parsed them separately and joined back on a RecordID field before combining Date and Time.
From there, the Multi-Row tool provided all functionality needed to group and flag the duplicates.
One question I had was how would you handle this if you weren't just looking 1 row back, but at the last 'non-duplicate' click, since the number of rows back could be variable. Any suggestions?
