SAP CDS View 中的Path Expression:数据模型与查询逻辑的桥梁 作为一名SAP资深技术专家,我很高兴向您解释SAP CDS View中的Path Expression。SAP CDS(Core Data Services)是一种强大的数据建模工具,用于定义数据模型和查询逻辑。在CDS视图中,Path Expression是一种关键的概念,它充当了数据模型和查询之间的桥梁,帮助用户...
SAP ABAP CDS(Core Data Services)视图是SAP系统中的一种建模工具,用于定义数据模型和数据库视图。CDS视图允许开发者创建高级数据模型,可以从多个数据库表中提取数据,并在SAP应用程序中使用。在CDS视图中,&#…
The new ABAP annotation AbapCatalog.compiler.compareFilter can be used to specify whether the filter conditions are compared for the path expressions of a view. In this case, the associated join expression is evaluated once only, if the same filter condition occurs. Modification...
接下来,我们创建CDS视图,并使用@Aggregation注解对订单行项目进行聚合: -- CDS View Definition@AbapCatalog.sqlViewName:'ZCDS_SalesOrder'@AbapCatalog.compiler.compareFilter:true@AccessControl.authorizationCheck:#CHECK@EndUserText.label:'Sales Order CDS View'defineviewZSalesOrderasselectfromSalesOrderHeader assoc...
CREATE TABLE SalesOrderItem (ItemID INT PRIMARY KEY,SalesOrderID INT,ProductID INT,Quantity INT,UnitPrice DECIMAL(10,2),Discount DECIMAL(5,2));```接下来，我们创建CDS视图，并使用`@Aggregation`注解对订单行项目进行聚合：```sql -- CDS View Definition @AbapCatalog.sqlViewName: 'ZCDS_SalesOrder'...
We can read and write the CORE-V’s registers in the “Register View”, To access the variables of the program, we should use “Variable view”. In the “Expression View”, we can input any variable or symbol of our project, and read it or modify it. ...
Aggregate expression in a SELECT statement of a CDS view. An aggregate expression calculates a single value from an operand operand by calling an aggregate function from multiple rows of a results set. The following table shows the possible aggregate functions: ...
Associations that could be followed at runtime by using explicit path notation in an SQL access are not counted. There are of course many more factors that contribute to the complexity of a CDS view: join and union operations, CASE expressions, functions and calculations, aggregations, and ...
CDS view enhancements Expressions and Functions Join type for associations Path expression with filter conditions Checking literals against fixed domain values 3. In ABAP 7.40, SP10 CDS Access Control 4. In ABAP 7.50, SP00 CDS Table functions Session variables CDS view with input parameters Annotatio...
CAST Casting expression in aSELECTstatement=, <>, <, >, <=, >=,BETWEEN,LIKE,ISNULL,NOT,AND,ORRelational expressions in aSELECTstatement Predefined FunctionsFunctionMeaning ABS, CEIL, DIV, DIVISION, FLOOR,MOD, ROUND Numeric functions in aSELECTstatement ...