See here: https://blogs.sap.com/2019/05/14/split-table-column-value-into-multiple-rows-using-sql-in-sap-hana/

I used it on a 7.50.

To answer the original question, if you set user parameter SEO_SOURCEBASED_AMDP to X, you can edit it in SE24...

Unfortunately, as usual, SAP is very active in starting the future, but never really cares to finish it up... For example the itab viewer in the debugger is still way behind the ABAP debugger and renders eclipse unusable for any debugging with big da...