Krishna and Ross,
To answer your questions
1) The columns fields are coming from the original AN's and are simply combined in nion. Pasted is the visual plan.
2) HANA DB Version : SP6
I understand SQL Engine does not always results in reduction of time, but I do no expect significant increase in time from 8.25 secs to 1 min and 30 sec as seen in our case. That in my mind is a 500% performance degration and it should not happen.
Regards,
-Hari
