Sum variable across groups

[jbartlau (combit - Jochen Bartlau)]

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Difference Between Sum Variables and Aggregate Functions

Valid from List & Label 23 You probably know the problem: You want to form a simple sum, but the values are calculated twice? The calculation is carried out in a specially created sum variable?   It is important to know the functional principle of sum variables. Sum variables always work across tables and not table-specific. In addition, the sum variables are also updated and calculated at different times. The principle can be explained in a simple and understandable way as follows: Starting Po…