[ABAP] OpenSQL: Stringfunktionen

* Funktionen:
*   concat
*   left
*   length
*   lower
*   lpad
*   ltrim
*   replace
*   right
*   rpad
*   rtrim
*   substring
*   upper

Links

• https://help.sap.com/doc/abapdocu_latest_index_htm/latest/en-US/index.htm?file=abensql_string_func.htm