Hi ABAP folks,
There‘s a popular internet meme out there: "One does not simply ...".
It comes from the statement "One does not simply walk into Mordor" made by Boromir, a member of the fellowship in the first Lord of the Rings movie, who is doubtful about the mission‘s prospects of success regarding the destruction of the one ring in Mount Doom - a volcano 🌋 in the realm of Mordor.
Maybe you were or are faced with a similarly tough mission when dealing with or learning ABAP. You could well argue that one does not simply understand ABAP 😅.
How about some info and code snippets on dedicated ABAP topics, concepts and syntax in a nutshell to get some basic equipment on the mission when advancing (certainly less belligerently than the fellowship mentioned above) into the realm of ABAP 🤔?
ABAP Cheat Sheets are there to support you!
🔗https://github.com/SAP-samples/abap-cheat-sheets
No, it's not about foul tricks and cheating. And no teacher will disapprove.
According to Merriam-Webster Dictionary 📚, a cheat sheet is a "a written [...] aid (such as a sheet of notes) that can be referred to for help in understanding or remembering something complex".
What are ABAP Cheat Sheets?
They …
- provide a collection of information on selected ABAP topics in a nutshell for your reference.
- focus on ABAP syntax, keywords and additions to ABAP statements.
- include code snippets.
- are supported by easy-to-consume demonstration examples that you can import into your SAP BTP ABAP environment or on-premise ABAP system using abapGit for you to run and check out ABAP syntax in action in simple contexts.
- do not claim to be fully comprehensive as far as the concepts and syntax options are concerned. Since they are enriched by links to glossary entries and chapters of the ABAP Keyword Documentation (the F1 help), and others, they invite you to explore them further.
Currently available cheat sheets
| Cheat Sheet | Topics Covered |
| ABAP for Cloud Development | Briefly covers the terms ABAP Cloud and classic ABAP to set the context for ABAP for Cloud Development |
| Data Types and Data Objects | Contains basic information about data types and data objects in ABAP |
| Internal Tables | Creating, filling, reading from, sorting, modifying internal tables |
| Structures | Some basics when working with structures |
| ABAP SQL | - Reading from database tables using SELECT
- Changing data in database tables using INSERT, UPDATE, MODIFY and DELETE
|
| ABAP Object Orientation | Working with objects and components, concepts like inheritance, interfaces, and more |
| Constructor Expressions | - Covers constructor expressions with operators such as VALUE, CORRESPONDING, NEW, CONV, EXACT, REF, CAST, COND, SWITCH, FILTER, REDUCE
- Iteration expressions with FOR
- LET expressions
|
| Dynamic Programming | - Covers field symbols and data references as supporting elements for dynamic programming
- Dynamic ABAP syntax components
- Runtime type services (RTTS), i. e. runtime type identification (RTTI) and runtime type creation (RTTC)
|
| String Processing | - Creating strings and assigning values
- Chaining strings
- String templates
- Concatenating, splitting, modifying strings
- Searching and replacing
- Regular expressions
|
| ABAP for RAP: Entity Manipulation Language (ABAP EML) | - EML syntax
- ABAP Behavior Pools, RAP handler and saver classes
- BDEF derived types
|
| Excursion Down to Bits and Bytes | Covers the technical background of data types and data objects |
| ABAP SQL: Working with Hierarchies | Summarizes the functions ABAP SQL offers together with ABAP CDS for working with hierarchical data that is stored in database tables |
| Internal Tables: Grouping | Covers the GROUP BY clause in statements for internal tables. |
| ABAP Managed Database Procedures (AMDP) | Covers ABAP Managed Database Procedures (AMDP): AMDP Procedures and AMDP Functions (including CDS Table Functions) |
| Program Flow Logic | Deals with control structures (IF, CASE), loops (DO, WHILE) and exception handling |
| ABAP Unit Tests | Contains basic information about unit testing in ABAP |
| CDS View Entities | Note that cheat sheet content is available in this blog. The repository contains examples. |
| SAP LUW | Provides a high-level overview of the SAP LUW concept with a focus on SAP LUW-related statements.
Note: Several statements covered in the cheat sheet and the executable example are only relevant to classic ABAP. |
| Dynpro | Provides a high-level overview of dynpro topics with a focus on dynpro-related statements.
Note: The content of this cheat sheet is only relevant to classic ABAP. |
| Selection Screens and Classic Lists | Provides a high-level overview of selection screens and classic lists with a focus on related statements. It includes an excursion into the SAP List Viewer (ALV).
Note: The content of this cheat sheet is only relevant to classic ABAP. |
| Working with XML and JSON in ABAP | Covers processing XML using class libraries, XML transformations, serializations (ABAP to XML) and deserializations (XML to ABAP), and dealing with JSON data |
| Misc ABAP Classes | Contains a selection of ABAP classes, serving as a quick introduction, along with code snippets to explore the functionality in action |
| Date, Time, and Time Stamps | Covers how to handle and process dates, times, and time stamps in ABAP |
| Misc Built-In Functions | Covers a variety of built-in functions in ABAP |
If you spot any errors, please create an issue in the GitHub repository.
Cheers.
