What are the ways to improve the Performance of View Output

Hi ,

I want valuable suggestion from you experts.First time i am working with millions of data.

I have 3 tables with 7 million,1 million and 1000 records respectively.

I created a SQL SCRIPT CALCULATION VIEW by joining(INNER JOIN) these 3 Tables and on top of it i did some complex calculations like

(Lead & Lag).I myself confirmed that there are no unnecessary Computations.

So when i run this view like (select * from myview) in HDBSQL(putty console)  its taking 8.5 seconds

and in Hana studio its taking 8.7 seconds.

When i expose this to front end tool(Yellowfin) over JDBC connectivity to load the dashboards its taking 30 to 35 Seconds.

As per the Customer requirement the timetaking to load in the front end as well as in backend are not accepatable.

How do we reduce view output time & moreover the dashboard loading time in the frontend.??

Thanks & Regards

Nagarjuna