Understanding Amdp in SAP HANA

What Is Amdp In Sap Hana

AMDP in SAP HANA is a powerful tool that enables developers to write advanced database procedures using ABAP language. This article will provide an overview of AMDP, explaining its purpose and benefits within the SAP HANA environment. We will explore how AMDP allows for efficient data processing and manipulation, as well as its integration with other SAP technologies. Additionally, we will discuss the key features and use cases of AMDP to help readers understand its significance in optimizing performance and enhancing application development on the SAP HANA platform.

What is ABAP Managed Database Procedure (AMDP) in SAP HANA?

AMDP, or ABAP Managed Database Procedure, is a framework in ABAP that allows for the management and invocation of database procedures through classes.

What is AMdP in SAP HANA?

Currently, the most efficient method of utilizing HANA procedures in ABAP is through Database Procedure Proxies. These proxies were introduced with Application ABAP 7.4 and service package 2.

In the Bottom-up approach, the initial step involves creating the database in HANA server and then making it accessible through the Database Procedure Proxy in ABAP server. To ensure that all related ABAP and HANA content is exported together, both HANA Transport Container and HANA Delivery Unit are necessary.

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The Bottom-UP approach presents a challenge as it results in the HANA and ABAP content having separate life cycles within the Transport Management System (TMS).

Understanding ABAP Managed Database Procedure (AMDP) in SAP HANA

The ABAP Managed Database Procedure (AMDP) offers a solution to the challenges encountered in the Bottom-Up approach.

The Top-Down approach in SAP HANA allows developers to efficiently create and manage HANA procedures within the ABAP Development Environment. This is achieved through the use of AMDP, which is a method belonging to a global class that is identified by specific interfaces known as AMDP classes.

The SQL class in SAP HANA is generated when the method of the AMDP class is first called.

AMDP Process Benefits in SAP HANA

The primary benefit of using AMDP in SAP HANA is that only the AMDP class needs to be transported using the ABAP transport mechanism. There is no need for a separate HANA delivery or transport system. Developers can utilize ABAP development tools to build and manage the CDS view, eliminating the requirement for additional HANA development tools.

AMDP Class Definition: An Illustration

PUBLIC SECTION. This section is accessible to the public. It includes an interface called IF_AMDP_MARKER_HDB, which serves as a marker for HANA DB.

The process method allows for the execution of ABAP code and has an importing parameter called it_param of type type1. It also has an exporting parameter called et_param of type type2.

execute is a method that can be used to execute either SQLScript or ABAP code. It requires a specific parameter interface, with an input parameter of type1 and an output parameter of type2. Additionally, it has a changing parameter of type3.

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AMDP Class Implementation in SAP HANA

AMDP stands for ABAP Managed Database Procedure. It is a feature in SAP HANA that allows developers to write ABAP code directly within the database layer. This enables efficient processing and execution of complex calculations and operations, resulting in improved performance and reduced data transfer between the application server and the database. By utilizing AMDP, developers can leverage the power of both ABAP and SQL to optimize their applications running on SAP HANA.

AMDP is a marker used in SAP HANA to indicate the execution of a method. It is specifically used for database procedures on the HDB platform, using SQLScript as the language. The “USING” keyword is followed by a list of names that represent the DDIC entities and AMDPs utilized in this process.

Please provide the SQLScript coding by selecting all data from the dummy table. The code should end with ENDMETHOD and ENDCLASS.

ABAP Managed Database Procedure (AMDP) Characteristics

  • Static check code and Syntax colouring are provided for embedded SQLScript
  • The user can set a Background colour for better visibility AMDP methods in the class.
  • The User can access other AMDP methods , ABAP dictionary view and ABAP tables in AMDP method.
  • AMDP method are called like other regular ABAP methods.
  • User can perform detailed analysis of various error during runtime in transaction ST22
  • Modification or Enhancement of regular ABAP classes can be done by Users.

The aim of AMDP

AMDP, also known as ABAP Managed Database Procedures, is a powerful feature in SAP HANA that allows developers to perform various operations on data stored in the database layer. Unlike traditional methods, AMDP offers the flexibility to not only read but also process and modify data directly at the database level. The key distinction between AMDP and OpenSQL lies in their respective writing capabilities. While AMDP enables developers to write SQL Script directly within the database layer, OpenSQL focuses on writing code within the ABAP layer.

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CDS vs. AMDP: How do they differ?

On the other hand, AMDP (ABAP Managed Database Procedures) is another feature in SAP HANA that focuses on creating stored procedures. Stored procedures are precompiled database programs that can be executed directly within the database engine. They allow complex business logic to be encapsulated and executed efficiently on the server side.

ABAP versus AMDP: What sets them apart?

Developers have the convenience of modifying and expanding existing ABAP code to cater to specific business needs. However, when it comes to AMDP in SAP HANA, there is a certain limitation on flexibility. This is because the code executed in the HANA database layer requires separate management from the ABAP layer.

However, one drawback of AMDP is that it introduces additional complexity compared to traditional ABAP coding. Developers need to manage two layers – the ABAP layer for application logic and user interface, and the HANA database layer for executing SQLScript procedures. This separation can make debugging more challenging as issues may arise from either layer.