Beast Mode Cumulative Sum Calculation for given scenario
Hi Team,
Request you'll to provide insights and case statement to get to the attached desired results.
 Cumulative Amount Current Year2020
 Cumulative Amount PreviousYear2019
 Cumulative Amount for last 5 Years(20152010)
 Cumulative Amount Lifetime
Thanks in advance.
Comments

You can use windowed functions (talk to your CSM to get them enabled if you don't have them in your instance).
I'm basing these on your example document but if you're wanting to see the running total you'd want to change OVER () to OVER (ORDER BY `Year`)
 Cumulative Amount Current Year2020
SUM(CASE WHEN YEAR(CURDATE())  `Year` = 0 THEN `Total` ELSE 0 END) OVER ()
 Cumulative Amount PreviousYear2019
SUM(CASE WHEN YEAR(CURDATE())  `Year` = 1 THEN `Total` ELSE 0 END) OVER ()
 Cumulative Amount for last 5 Years(20152010)
SUM(CASE WHEN YEAR(CURDATE())  `Year` <= 5 THEN `Total` ELSE 0 END) OVER ()
 Cumulative Amount Lifetime
SUM(`Total`) OVER ()
If you don't need to show the individual years you can do it without windowing functions and just itilize the CASE statements in each beast mode and drop the OVER () windowing function.
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