5 Tips for Writing Efficient ABAP Code

 

1. Use the correct data types: Using the correct data types can help you save memory and improve performance. For example, use the CHAR data type for character strings that have a fixed length, and use the STRING data type for character strings that have a variable length. You can also use the LIKE keyword to define a data type that is similar to an existing data type.

2. Avoid nested loops: Nested loops can be very time-consuming, especially if the inner loop is executed many times. Instead, try to use a single loop with a WHERE condition to filter the data. For example, instead of using a nested loop to find all customers who have placed an order, you can use a single loop with a WHERE condition to find only the customers who have placed an order.

3. Use internal tables: Internal tables are a powerful tool for working with large amounts of data. They can be used to store data temporarily, and can be sorted, filtered, and searched quickly. You can use the APPEND statement to add data to an internal table, and the LOOP AT statement to loop through the data.

4. Use function modules: Function modules are pre-built pieces of code that can be used to perform common tasks. They are usually faster and more efficient than writing your own code. You can use the CALL FUNCTION statement to call a function module.

5. Use the latest version of ABAP: The latest version of ABAP includes many performance improvements and new features that can help you write more efficient code. For example, the latest version includes support for inline declarations, which can help you write more concise code.

Here is an example code for using internal tables:

TYPES: BEGIN OF ty_customer,
         name TYPE string,
         age TYPE i,
       END OF ty_customer.

DATA: lt_customers TYPE STANDARD TABLE OF ty_customer.

SELECT name, age
  INTO TABLE lt_customers
  FROM customers
  WHERE age > 18.

LOOP AT lt_customers INTO DATA(ls_customer).
  WRITE: / ls_customer-name, ls_customer-age.
ENDLOOP.