Hi,
We also had the same question but when checked with SAP, they mentioned that-- There is no difference in the Performance fetching data from Dictionary View and Fetching data from HANA View via ADBC.. because the open sql is converted into native sql and hence filtering will happen at DB level.
So we can use DDIC view and use the SELECT-OPTION Values in the Where Clause of the Open SQL
I read in some blogs that in SP2 there are some API's are available using which we can pass the SELECT-OPTION values to HANA View(e.g. Calculation VIew) via DDIC View.
You can use the FM: RSDS_RANGE_TO_WHERE to convert select Option values into where clause
Thanks and Regards,
Nagaraj