Thanks for providing more details @Koteswara Pentakota .
Data Encryption at rest basically protects data against attacks where in the data, backups are all encrypted on disk.
But if someone has access to database through credentials, they will be able to see all the table data as it is.
I have received the response back from product group and table/row/column level encryption is not available out of the box as of now.
However we can use Encryption and Compression Functions to achieve the same. The article mentioned has clear description on how to use them while inserting and then reading the data back from the tables.
Please let us know if this helps or else we can discuss further on the same.
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