What are best practices when programming in ABAP for SAP HANA? There are 2 correct answers to this question.
A . Calculate aggregations using ABAP code on the application server to limit database load
B . Eliminate nested SELECT statements to reduce the overall number of database accesses
C . Use a column list in the SELECT clause to ensure that you only read a column if it is really required
D . Use repeated SELECT SINGLE statements to ensure that you only read arrow if it is really required
Answer: B,C