Check of data in internal table

Hi,

I am looking for a solution for a specific analysis on table EASTL. As you can see on the screenshot the two logical numbers 5317 and 21506 (EASTL-LOGIKNR) are assigned to installation 21795 (EASTL-ANLAGE). I would like to find all other installations having the same devices installed in the same period as the installation I want to compare against.

In this example the result should be: installation 5354.

What's the simplest way to do that?devicedata.png