Hi Akash,
Do you want to consume OData to a HANA application, or do you want to deliver OData from HANA?
Sometimes you tube "how to clips" can be very helpful. Not knowing exactly what you are looking for here is a clip I found helpful which covers create/update/delete
oData Create/Update/Delete Support in SAP HANA SPS6 - YouTube
From the HANA Academy, here is a clip on creating OData base rest service.