Hi,
I want to show Week over week metrics (Column) in my dataset.
I have used date ranges at weekly level and showing visits metric in another column in a bar chart.
Now, I want to add a line showing Week over week variation.

I have read the other posts/solutions and know it has to be with a self join only and within Magic ETL - but was facing some issues in implementing the same.
The closest was this post in the last answer by McSQL
Any approach/feeback/examples would be highly appreciated.