ABAP AMDP

ABAP AMDP: Pushing Your SAP HANA Performance to the Limit

ABAP Managed Database Procedures (AMDPs) are a powerful way to optimize your ABAP code that leverages the power of the SAP HANA database. They let you write database procedures directly within your ABAP code, providing a seamless and efficient way to bring complex logic closer to the data.

Why AMDPs Matter

• Blazing Performance: AMDPs directly execute on the SAP HANA database engine, reducing network roundtrips and allowing you to exploit the in-memory capabilities of HANA to the fullest.
• Simplified Code: Instead of juggling complex data transfers between the application layer and the database, AMDPs let you encapsulate database logic within your ABAP program. This streamlines development and improves code readability.
• Leveraging HANA Power: You can unleash the full array of SQLScript features (HANA’s database procedure language) directly from ABAP, opening up advanced calculations, text processing, and more.

Getting Started with AMDP

1. Create an AMDP Class: Use your ABAP Development Tools (ADT) in Eclipse to create a global class. Mark this class with the interface IF_AMDP_MARKER_HDB.
2. Define the AMDP Method: Within your class, define a method and add the keywords BY DATABASE PROCEDURE FOR HDB LANGUAGE SQLSCRIPT. This is where you’ll house your SQLScript code.
3. Write SQLScript Logic: Inside the method, use SQLScript to implement your database procedure. Access ABAP input parameters like any normal variables and use RESULT to define output tables.
4. Call the AMDP: Just call this method from your ABAP code! The procedure runs directly on the HANA database.

Example: A Simple Calculation

ABAP

CLASS zcl_demo_amdp DEFINITION PUBLIC CREATE PUBLIC.

  PUBLIC SECTION.

    INTERFACES if_amdp_marker_hdb.

    METHODS get_total_sales

      IMPORTING

        iv_region TYPE string

      RETURNING

        VALUE(result) TYPE ty_sales_data. 

ENDCLASS.

CLASS zcl_demo_amdp IMPLEMENTATION.

  METHOD get_total_sales BY DATABASE PROCEDURE 

                             FOR HDB 

                             LANGUAGE SQLSCRIPT 

                             OPTIONS READ-ONLY.

    RESULT = 

      SELECT region, SUM(net_amount) as total_sales

      FROM sales_order 

      WHERE region = :iv_region

      GROUP BY region;

  ENDMETHOD.

ENDCLASS.

Use code with caution.

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Beyond the Basics

• Multiple Result Sets: AMDPs can return multiple tables for complex queries
• Error Handling: Use exception handling blocks within your AMDP to manage potential database errors
• Complex Transformations: Exploit SQLScript’s rich set of functions for data manipulation

Important Note: AMDPs are best suited for database-intensive operations when performance is absolutely paramount. For the majority of regular interactions, normal OpenSQL access is usually adequate.

Is your ABAP code itching to tap into HANA power? Give AMDPs a try!