Identify the Type of CDS View You Want to Extend There are different layers in RAP: Interface View (I_) Consumption/Projection View (C_ or ZC_) Data Definition View (Z_) Usually, you extend interface or projection views. Use the EXTEND VIEW Statement You can extend a CDS view using ...
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Aspect DDIC View (ABAP Dictionary View) CDS View (Core Data Services View) Definition Tool Created using SE11 (Graphical interface) Created using ADT (Eclipse) with SQL-like DDL syntax Technology Base Classic SAP NetWeaver Modern SAP HANA / S/4HANA Definition Style GUI-based definition (drag-and-drop style) Text-based, code-centric with annotations Join Support Basic joins (Inner, Outer) Advanced ...
Feature OLTP OLAP Full Form Online Transaction Processing Online Analytical Processing Purpose Run daily operations Analyze and report on business data Operation Type Short, frequent transactions Complex queries, aggregations Data Volume Large number of small transactions Smaller number of large queries Performance Focus Speed of write operations Speed of read/analysis Data Structure Highly normalized Often denormalized (e.g., star schema) Examples Insert/update orders, ...
Feature Row Store Column Store Data Layout Row by row Column by column Best Use Case OLTP (transactions) OLAP (analytics, reporting) Read Performance Good for full row reads Excellent for column-specific reads Write Performance Fast for row-level writes Slower for frequent updates/inserts Compression Lower Higher Aggregations & Filters Slower Much faster
Exposed Associations An exposed association is one that is defined in a CDS view and is made available (exposed) to consumers of the view — such as other CDS views, analytical queries, or OData services. You define the association using the ...
Association An association is a declarative relationship between CDS entities (like foreign keys), defined using the association keyword. Key Characteristics: Lazy/Evaluated-on-demand: Data from the association is not fetched unless it is explicitly accessed using a path expression (like to_customer.name). Navigation-style ...
Example CDS view to join delivery table LIKP and LIPS on VBELN field and with LFART in where condition ------------------------------------------------------------ CDS VIEW: ------------------------------------------------------------ @AbapCatalog.viewEnhancementCategory: [#NONE] @AccessControl.authorizationCheck: #NOT_REQUIRED @EndUserText.label: 'CDS - Inner Join' @Metadata.ignorePropagatedAnnotations: true @ObjectModel.usageType:{ serviceQuality: #X, sizeCategory: ...
Here in this example, We are going to create CDS view with Case statement, here new field “DocText” will be added and value will be calculated based on below. case vbtyp ...
Using an AMDP (ABAP Managed Database Procedure) inside another AMDP can be useful in specific scenarios, especially when trying to modularize complex logic or reuse database-side procedures. However, it comes with certain considerations and limitations. Code Reusability If you have logic encapsulated ...
AMDP (ABAP Managed Database Procedures) in CDS (Core Data Services) in SAP refers to a way to integrate native SQLScript (e.g., HANA procedures) directly within ABAP classes. It’s not a part of CDS views themselves, but is often used alongside ...