What is CASE statement in SAP BC-ABA - ABAP Runtime Environment?

SAP Term: CASE statement

• Component: BC-ABA

• Component Name: ABAP Runtime Environment

• Description: An introduction to a control structure in ABAP code. The CASE control structure controls which CASE statement blocks are processed based on the contents of a data object.

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• Key Concepts: 
  The CASE statement is a control structure in the ABAP Runtime Environment of SAP. It is used to evaluate a single expression and then execute one of several branches of code depending on the result of the evaluation. The CASE statement can be used to replace multiple IF statements, making code more concise and easier to read. 
  
  How to use it: 
  The CASE statement is used to evaluate an expression and then execute one of several branches of code depending on the result. The syntax for the CASE statement is as follows: 
  CASE expression. 
  WHEN value1. 
      statements1. 
  WHEN value2. 
      statements2. 
  ... 
  ELSE. 
      statementsN. 
  ENDCASE. 
  The expression is evaluated and then compared to each of the WHEN values in turn. If a match is found, the corresponding statements are executed; otherwise, the ELSE statements are executed. 
  
  Tips & Tricks: 
  When using the CASE statement, it is important to remember that only one branch of code will be executed; all other branches will be ignored. This means that any variables that are modified in one branch will not be modified in any other branch, so care must be taken when using variables in multiple branches of code. Additionally, it is important to remember that the ELSE branch is optional; if no ELSE branch is specified, no code will be executed if none of the WHEN values match the expression. 
  
  Related Information: 
  For more information on the CASE statement, please refer to SAP Help Portal (https://help.sap.com/viewer/product/ABAP_RUNTIME_ENVIRONMENT/731/en-US). Additionally, there are many tutorials available online that provide more detailed information on how to use the CASE statement in ABAP programming (https://www.tutorialspoint.com/abap/abap_case_statement.htm).