Category > Tips & tricks
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Local dummy functions named after remote RFC functions

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I recently started working in a new customer and noticed something they do here which I really liked. Whenever they need to call a remote function module by RFC in another SAP system, they create a local function module with the same name and leave it empty, except for a comment explaining that it is a dummy function for that remote function call. Thanks to this simple trick, one can use the where-used tool to find out where it is being called.

Reset SAP note implementation

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I remember when SAP notes had to be inserted by hand. Copy paste and pray that no mistake was made. Wild. I actually remember a project which, for some strange obscure reason, instead of upgrading, decided to implement hundreds and hundreds of notes by hand. They printed them all and made a huge pile of paper and about 10 ABAP consultants spent the whole weekend trying to process the whole pile. We did it. But I have no idea what were the consequences and how many bugs were introduced. Many for sure.

Table lookup without having to deal with CX_SY_ITAB_LINE_NOT_FOUND

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Before the modernization of ABAP in 7.40, a table lookup required an auxiliary variable and at least 4 lines of code.

Convert amount to numeric external format

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As is well known, SAP stores amounts internally in variables with 2 decimal places. When we want to convert it to its external format, we use WRITE with the CURRENCY option. But WRITE writes to an alphanumeric variable. What if we need to write it to a numeric variable?

Quick Cut and Paste

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I learned yet another small obscure SAPGui functionality. How to speed up copy and paste.

Clean ABAP

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For many years, when confronted with ABAP OO, most ABAPers I talked to, acknowledged that OO is great for most languages but never saw any real advantage in adopting it for ABAP. So they carry on using FORMs, INCLUDEs and CALL FUNCTIONs. The standard SAP code sets the example by trying to make something work while breaking every possible programming best practice.

NOT

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No, ABAP will never have the NOT operator.

MOVE-CORRESPONDING between two tables with automatic look up

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Abapinho hasn’t been talking a lot about 7.40 because most of the new possibilities have already been widely discussed in other sites and we don’t want to reinvent the wheel. But, here and there, I find small useful jewels which seem to still be under the radar. This is one of them.

Get unique values of an internal table field

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In SQL you can get a list of unique values of a field using DISTINCT. When the data is already in an internal table, before ABAP 7.40 you had to use a LOOP and a COLLECT. But now that we live in more modern times, there is a simpler and more elegant way to achieve the same with a single command.

How to render CL_GUI_ALV_GRID in background

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Someone decided to run an editable ALV (based on CL_GUI_ALV_GRID) in background. It dumped. The solution is simple but not that obvious.

Use CL_GUI_ALV_GRID without having to create a screen

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Nowadays I rarely use CL_GUI_ALV_GRID because SALV is so much better. But when I am asked to make an editable ALV I still use it. Until very recently, I thought that, in order to use it, I needed a screen with a container. And because I’m using ABAP OO, I’d need a function group to host it and a function module to call it. Painful.

How to resize an ALV grid to fill the whole window

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Sometimes the simplest things take the longest time to do. For instance, we recently needed an ALV grid to automatically resize to fill the whole window. But how? But how? But how?

All SAP demo code under the same roof

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When I was a little boy, back in the 80’s, I had to type LOAD "" and then wait for several minutes staring at stripes in a TV and listening to strange noises before a ZX Spectrum game was ready to be played. Many years later, when I already had a PC, I found an emulator which had a menu with hundreds of ZX Spectrum games. I just had to pick one from the list and start playing immediately.

I started using " instead of * for comments

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I have always used * to comment my code. I only used " for pseudo-comments or to leave small comment at the end of a line. But I recently learned that using " makes much more sense.

It's now so simple to convert a MESSAGE into an EXCEPTION

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Some years agor I showed how to convert a normal MESSAGE into a typified exception. Meanwhile ABAP evolved a lot and now, since version 7.40, that complex solution is no longer needed.