How to use Alias name in OData service in SAP HANA

Hi,

     I need to change one column name with alias of another name in odata service definition or odata url running in rest client. I am trying to give alias name with as key in the service definition like sql query.

ex:

There is one table with column name of PRODUCT_ID. I exporting that table via odata service to SAP UI. In the UI i dont want the product id column as PRODUCT_ID. It should be ike "Prodcut". Like we are using in SQL example

select "PRODUCT_ID" as "Product" from "producttab";

But i can't use as key for alias name. So i am getting syntax error.

I have tried in rest client also ie executing odata file in rest based service. But i got error only.

If anyone knows about this alias name in odata service, Please help me to resolve this issue..