IF NOT cl_abap_dbfeatures=>use_features(
EXPORTING
requested_features =
VALUE #( ( cl_abap_dbfeatures=>amdp_table_function ) ) ).
cl_demo_output=>display(
`System does not support CDS table functions` ).
RETURN.
ENDIF.
IF NOT cl_abap_dbfeatures=>use_features(
EXPORTING
requested_features =
VALUE #( ( cl_abap_dbfeatures=>amdp_table_function ) ) ).
cl_demo_output=>display(
`System does not support CDS table functions` ).
RETURN.
ENDIF.
![结合AliOS Things谈嵌入式系统通用问题定位方法（2）：内核相关基础1、任务2、内存3、中断4、多核相关5、用户态/内核态开发者技术支持[图]](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACwAAAAAAQABAAACAkQBADs=)