Converting BW APD to HANA APD

Hi Experts,

I am trying to convert a BW existing APD into HANA APD. In my existing BW APD we are using multiple loop statements due to complex business logic. This existing BW APD takes around 6 hours to finalize in BW HANA system.

Now we are trying to convert existing APD into HANA APD. If we just migrate our ABAP code used in existing APD to SQL code without creating any calculation view, then is there any possibility to see performance improvements. Also in migration we also need to use cursor for meeting our requirements. Please let me know your comments or best possible way to achieve better performance.

Regards,

Dheerendra