I have used the following syntax to directly return the corresponding description via path expression.
The data source comes from 1: N association.
The question is: how SAP internally implements this association? Via Inner join or outer join?
有两种办法可以自己搞清楚。
方法1
使用ABAP Development Tool里的右键菜单：Open With->Dependency Analyzer:
方法2
ST05: Display execution plan
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