注意:table function应永远有返回参数,所以记着在最后一个SELECT语句前放一个RETURN语句。另外,注意我们将字段名转换为前文中ABAP CDS Table Function声明的字段名,如果你没有提供一个合适的别名,激活的时候编译器会给出提示。 类ZCL_FLIGHTS_DEMO_CDS的最终版本是这样的: CLASS zcl_flights_demo_cds DEFINITION PUB...
在常规的ABAP CDS内我们可以使用CONCAT函数,但是使用它的时候,我们需要定义固定数量的字段,既然CDS视图不能实现此处需要的处理动态逻辑,要如何处理呢? 这是一个使用ABAP CDS Table Function的绝佳场景,因为我们可以使用简单的数据库函数STRING_AGG(String Aggregation)。这个功能在SQL Script中可用,但是目前还是不支持ABAP...
A CDS table function returns a tabular result set. This can be used (like everyCDS entity) as a data source in other CDS entities or inOpen SQL read statements. The prerequisite for use is that the specified AMDP function implementation exists and is active. Notes Table functions constitute ...
In the following listing, a client-specific ABAP CDS table functionTAB_FUNCTION_EXAMPLEis defined using the DDL syntax. This table function declares two input parametersclnt(with the predefined value: #CLIENT) andcarrid, and a list of elements that provide the return values of the AMDP method ...
如我们所知,HANA CDS只支持HANA数据库,ABAP CDS理论上支持多种数据库供应商,结果是,ABAP CDS相比之下要少一些功能。因此,在某些情况下,无法使用ABAP CDS解决问题时,可以使用一种变通的方法,即通过ABAP Managed Database Procedures (AMDP)创建ABAP CDS Table Function。
指定类方法关联 TABLE FUNCTION (CDS视图中的TABLE FUNCTION) 指定类方法中使用SQL脚本,只读属性 原生HANA SQL语句 CDS中定义的TABLE FUNCTION 同2 指定CDS视图执行创建的类方法 创建好的CDS视图因为不能定义ABAP视图名称, 因此无法通过SE11/SE16N访问, 只能通过ABAP语句访问 ...
define table function DEMO_CDS_GET_SCARR_SPFLI_INPCL with parameters @Environment.systemField: #CLIENT clnt:abap.clnt, carrid:s_carr_id returns { client:s_mandt; carrname:s_carrname; connid:s_conn_id; cityfrom:s_from_cit; cityto:s_to_city; } implemented by method CL_...
做一个比较简单的cds串联amdp step one step two step three code1 CLASS zcl_demo_flight_calculation DEFINITION PUBLIC FINAL CREATE PUBLIC . PUBLIC SECTION. INTERFACES: if_amdp_marker_hdb. CLASS-METHODS: get_details FOR TABLE FUNCTION ZDEMO_FLIGHT_CDS_TF....
This method takes parameters from the defined table function to filter on POnumber and POitem. Goal is to call this table function in my main CDS View, but i have already something in the from clause and several joins. So i can only join the table function i guess. This works but ...
Defines a CDS table function 7.61, 7.50 WITH PARAMETERS Defines input parameters for a CDS table function 7.61, 7.50 KEY Defines an element as key element. 7.61, 7.50CDS Hierarchies Keywords and Additions Language Element Meaning ABAP Release DEFINE HIERARCHY ... Defines a CDS hierarchy 7.73, 7.5...