Hello guys, I am currently working on a school project, where i have two files as below:
File 1: i have a list of unique id, and one unique id would have one or multiple dates with it (or you can think as the unique ID is the membership number, and the date is when they visit the gym, so every unique id could have multiple date assigned to it)
File 2: i have a list of unique id with start and end date, and same as above, one unique id could have multiple date ranges.
Therefore, with the above two file, i would need to know if there are any data from file 1 of each unique id, failed to fall into the date bucket (range) as recorded in file 2.
i am having a trouble when mapping the unique ID of both file while considering the dates and the ranges.
any help is greatly appreciated, thanks a lot!!!