SAP ABAP CDS view位于ABAP应用服务器层，使用OPEN SQL，支持的数据库不限HANA，因此既能在ECC也能在S/4HANA里使用；ABAP CDS view的使命是身为SAP ABAP 而SAP HANA CDS view是HANA数据库的一部分，位于HANA XS层(HANA Extended Application Services), 其就是为了创建HANA数据库里的模型和开发原生的 HANA应用而生的，使用NATIVE SQL, 脱离了HANA数据库单独谈HANA CDS view没有任何意义。
Created by Wang, Jerry, last modified on Jan 23, 2017 create a CDS view with following source code: ? Create another CDS view which extends the view created in step one with additional two fields: PRODUCT_TYPE
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创建一个cds Access Control @EndUserText.label: 'check ztest_cds quthority' @MappingRole: true define role ZAUTH_CHECK { grant select on ztest_cds//CDS 视图名
今天继续聊S/4 HANA的CDS视图，上一篇我们简单介绍了一下CDS视图的几个聚合函数，如果你还没来得及看，请翻阅《简单介绍几个CDS视图聚合函数》。 7、我们来看一下CDS的语法。 创建CDS视图时，注释“@ AbapCatalog.sqlViewName”是必需的，通过它可以在数据字典中创建视图。 ▸cds_entity - 是视图的名称。 ▸name_list - 运行CDS视图时输出中显示的字段名称列表。 ▸parameter_list - CDS视图的输入参数列表。 12、最后我们可以看到如下所示的输出，并从CDS视图中检索数据。 ? 到这里我们已经完成了一个完整的CDS视图创建过程。
一个朋友遇到问题：给 ABAP CDS view 添加 OData.publish: true 注解激活之后，期望自动生成 OData 服务，但是遇到错误消息： Data source is not a transactional CDS view [OData Exposure] SAP 社区上有人问类似的问题：https://answers.sap.com/questions/78804 /cds-view-annotation-.html 可以尝试去后台使用事务码 /IWFND/MAINT_SERVICE, 对 OData 服务 ZFLIGHT_COM_CDS 手动激活。 如果后台激活 OData 服务后，回到 ABAP Development Tool 里激活 CDS view，还是遇到 Data source is not a transactional CDS view 如果想进行某种事务处理，需要使用 @ObjectModel.transactionalProcessingEnabled 来修饰 CDS view.
然后创建zcl_tab_function类，引用接口IF_amdp_marker_hdb.
CDS中支持的join有： Inner Join define view ztest_cds3 as select from sflight as _sf inner join spfli as _spf sf.price, _spf.countryf } Inner Join返回结果为表sflight与spfli之间的交集 Left outer join define view ztest_cds3 Right outer join define view ztest_cds3 as select from sflight as _sf right outer join spfli as _spf Cross join define view ztest_cds3 as select from sflight cross join spfli{ sflight.carrid, spfli.connid
这些命名规约适用于CDS文件和其所在package的名称。 适用于命名CDS文档的规则与命名CDS文档所在的package的规则相同。 当指定package或CDS文档的名称（或引用现有CDS对象的名称时，例如CDS文档中），请记住以下规则： 1：文件后缀 文件后缀根据SAP HANA XS版本而有所不同： XS经典写法：.hdbdd 2：允许的字符内容 CDS对象和包名称可以包括以下字符： 小写或大写字母（aA-zZ）和下划线字符（_） 数字（0-9） 3：禁止字符 以下限制适用于CDS文档或软件包名称中可以使用的字符（及其位置 ）： 不能在CDS文档的名称中使用连字符（ - ）或点（。）。 CDS解析器无法识别仅由数字组成的CDS文档名称或软件包名称，例如1234.hdbdd（XS classic）或acme.com.999.hdbcds（XS advanced）。
corresponding elements are used as so called measures (elements that can be aggregated) both in standard CDS
CDS中支持的join有： Inner join define view ztest_cds3 as select from sflight as _sf inner join spfli as _spf Left outer join define view ztest_cds3 as select from sflight as _sf left outer join spfli as _spf on Right outer join define view ztest_cds3 as select from sflight as _sf right outer join spfli as _spf Cross join define view ztest_cds3 as select from sflight cross join spfli{ sflight.carrid, spfli.connid
（Creative Commons） Scenario Suppose we have a database table A, and then we create a CDS (2) Create a new CDS view with following source code: @AbapCatalog.sqlViewName: 'zmara_cds' @AbapCatalog.compiler.compareFilter business point of view, I just use it to illustrate how a field from database table could be mapped to a CDS Once CDS view is done, activate it and assign the view to database table via menu in SE11: ? ?
In part1 of this tutorial, the old way to create OData service on top of CDS view is introduced. In SAP Help Generate Service Artifacts From a CDS View a new annotation is described: @OData.publish : true Just add this annotation to your CDS view and the odata service is automatically created, no need Once activated, the odata service with naming convention “_CDS” is available for registration in tcode For example, if I add @OData.publish: true to an existing CDS view and activate it, the corresponding
目录 Part1 – how to test odata service generated by CDS view Part2 – what objects are automatically generate view test double framework Part12 – CDS view source code count tool Part13 – CDS view authorization So this CDS view extensibility is really easy to use for application developer. Open the SQL view of CDS view I_PRODUCTWD, it is IPRODUCTWD in SE11. The first three rows are CDS extension view to be generated.
What we want to achieve is: in CRM we need a CDS view which returns the service order guid together with This question is asked via this SCN thread: ABAP CDS View: join tables on columns of different type. As suggested in the Correction Answer, this issue could be resolved by using CDS Table Function. The keywords “returns” defines available fields which could be consumed by other CDS entities. } Please note that the created table function in step1 could be directly consumed just as a normal CDS
Once done, the UI5 application will display the data from our CDS view like below. How is navigation implemented among CDS views In this part, let’s create CDS view which supports node The previous CDS view we created has a flat structure which only have a root node. Now let’s create a series of CDS views: (1) A CDS view which contains two fields: spfli.connid and spfli.carrid _Item } Activate all of these three CDS views.
Most annotations for defining the star schema in different CDS views are specified in ObjectModel annotations Scope: #VIEW Evaluation Runtime (Engine): Analytic query can be defined on top of CDS views using the
我觉得CDS view + SADL一句话可以概括成"能够build框架的框架". Smart template design time repository现在全部基于CDS view, Read和search由自动生成的Odata service通过SADL自动完成，CUD是redefine
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下面的CDS view使用到了@Environment.systemField这个注解，定义了两个参数#SYSTEM_LANGUAGE和#USER。
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