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ABENFOR_GROUP_BY_LVLS_NST_ABEXA - FOR GROUP BY LVLS NST ABEXA

- Grouping with FOR, Nesting

This example demonstrates nested group level processing using GROUP BY in a FOR expression.

Source Code

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Description

This example works in the same way as the corresponding executable example for LOOP AT ... GROUP BY, but uses the expression FOR GROUPS ... OF for table reductions with REDUCE instead of the group loops. In both cases, the group keys after GROUP BY are constructed in exactly the same way. Instead of the member loops, further table reductions and a table comprehension are used here. used here.