Hi,
I am looking for a way to migrate COUNTIFS calculation to knime. I am aware that some part of it can be done by GroupBy, but I couldn't figure it out to my data.
Here I provide a simplified version of data and formula I used to calculate required outcome (counting how many ID's I have before specific date, aggregated on class level).
Formula: =COUNTIFS($A$2:$A$12,A12,$B$2:$B$12,"<>"&B12,$C$2:$C$12,"<"&C12)
| Class | ID | Date | COUNTIFS_result |
| A | 1234 | 1/1/2016 | 0 |
| A | 12345 | 3/1/2016 | 1 |
| B | 3254 | 5/1/2016 | 0 |
| B | 2568 | 7/1/2016 | 1 |
| B | 3658 | 9/1/2016 | 2 |
| B | 9874 | 11/1/2016 | 3 |
| C | 65889 | 1/1/2017 | 0 |
| C | 2563 | 3/1/2017 | 1 |
| C | 2365 | 5/1/2017 | 2 |
| D | 25856 | 7/1/2017 | 0 |
| D | 3226 | 9/1/2017 | 1 |
Any advice is more than welcome, I have several dataset in similiar format with huge amount of rows, and I need to automate this calcs to use results in the models.
Thanks
Jola