Hi, I got some support from the programmers of the component- , now it works. An example query for a 3d pie chart:
(SELECT '' AS `color`, 0 AS `isSliced`, 'Dauer 1' AS `label`, ((SUM(`dauer_z1`) / SUM(`dauer_ges`)) * 100) AS `label` FROM `#__trlog`) UNION
(SELECT '' AS `color`, 0 AS `isSliced`, 'Dauer 2' AS `label`, ((SUM(`dauer_z2`) / SUM(`dauer_ges`)) * 100) AS `label` FROM `#__trlog`) UNION
(SELECT '' AS `color`, 0 AS `isSliced`, 'Dauer 3' AS `label`, ((SUM(`dauer_z3`) / SUM(`dauer_ges`)) * 100) AS `label` FROM `#__trlog`) UNION
(SELECT '' AS `color`, 0 AS `isSliced`, 'Dauer 4' AS `label`, ((SUM(`dauer_z4`) / SUM(`dauer_ges`)) * 100) AS `label` FROM `#__trlog`) UNION
(SELECT '' AS `color`, 0 AS `isSliced`, 'Dauer 5' AS `label`, ((SUM(`dauer_z5`) / SUM(`dauer_ges`)) * 100) AS `label` FROM `#__trlog`)
So basically you have to create a "table" with your query that has all columns like label, column, value etc. like the backend settings need to done for each single row. Then, with UNION you can create a the next row!
Hope, this helps you too!