Aggregating is only supported in grids with an XPath source
Dear everyone, I found an issue about aggregation, I created a datagrid, and it has an integer type column named Amount. After I set the [Aggregate function] to Sum, the Error appeared. [CE0508 Aggregating is only supported in grids with an XPath source ] I use the Mendix Studio pro version 8.15.1. Why does the system prompt this error? who does have any suggestions? Thank you ！
Yin Feng Xu
Aggregates don't work for other data sources than database because they are computed using SQL queries.