I would like the ability to show year over year data on a graph where the series is the year for the data being graphed. This way its easy to see improvement over last year.
To this old question you posted, did you ever figure out how to impliment it? I have tried Left JOIN, nested SQL and UNION. Nothing is giving me what I want.
I have sales against a timestamp, want to sum weekly sales this year, and last, in a 2-series chart.
you input appreiciated.