Experiment on performance: SELECT SINGLE vs FOR ALL ENTRIES

When all business requirements are met in a development, customer complaints always come down to performance. “Can’t this run any faster?” we always hear. Performance, in a technical point of view, is a broader concept that not just includes execution time, but also optimal use of system resources like memory and network load.  But powerful […]

ABAP by numbers: Length of decimal type

Inequality between length and maximum digit count of packed decimal type causes great confusion even among seasoned developers. ABAPDOCU explains the relation with a fairly complicated formula: Depending on the field length len and the number of decimal places dec, the following applies to the value range: (-10^(2len-1) +1) / (10^(+dec)) to (+10^(2len-1) -1) /(10^(+dec)) […]

Obligatory selection screen parameters

Almost every ABAP developer comes to a point where they require obligatory parameters along with user command logic in their selection screens. As you might already know, that’s a problem. Because obligatory parameters demand input on every action of user and interfere with user command logic, which results in a broken selection screen. Let’s see […]

ERROR_MESSAGE: Predefined exception for function modules and methods

No matter how many times mentioned before (thanks to Rahul Gopinath, Amit Behera, Srinivas Dummu and Mike), I still see sy-subrc check after a function module call without exceptions.

This is so wrong. According to ABAP keyword documentation: If no exception is raised, a call sets sy-subrc to 0. So in the above example, sy-subrc will always be equal to […]

Hello ABAP world!

Greetings to fellow SAP ABAP developers from around the world. I have just decided to start a new ABAP blog (yes, yet another) and this first post is here just to share my excitement. So why another ABAP blog? Of course I know there are already many ABAP blogs and tutorial sites who are actually […]