table calculation function like table sum, table % etc #enhancement

[Himmetk]

https://community.tableau.com/thread/208574

[buremba]

We have column statistics feature but it doesn't add an extra row to the table. Here is an example: https://app.rakam.io/84/report-playground?options=%7B%22chartType%22:null,%22limit%22:1000,%22enableStatistics%22:true,%22tableOptions%22:%7B%22enabled%22:true%7D,%22chartOptions%22:true,%22variables%22:%5B%5D,%22segments%22:%5B%5D,%22measures%22:%5B0,1,2%5D,%22dimensions%22:%5B%5D,%22columnOptions%22:%5B%7B%22displayFormat%22:null,%22tableOptions%22:%7B%22cellOptions%22:%7B%22statistics%22:%22max%22%7D%7D%7D,%7B%22displayFormat%22:null,%22tableOptions%22:%7B%22cellOptions%22:%7B%22statistics%22:%22relative%22%7D%7D%7D,%7B%22displayFormat%22:null,%22tableOptions%22:%7B%22cellOptions%22:%7B%22statistics%22:%22sum%22,%22bar%22:true%7D%7D%7D%5D%7D&queryOptions=%7B%7D&query=select%201,2,3%20union%20all%20select%202,3,6