Hello Dabhivijay,
First of all welcome to the Quick Sight Community.
With one Click importing all tables i think its not possible. Anyhow, I think before talking about tables i would recommend to understand how Quick Sight connects with Databases or backend. i.e either direct query or SPICE.
See the best practices for either way here - Best practices for Amazon QuickSight SPICE and direct query mode
Hope this gives some idea and lets you strategise the approach.
Thank you.
Cheers,
Deep