Add a function

[520yanaji]

Describe the feature

Add a --skip-existing function feature similar to gpcopy

Motivation

No response

Describe the solution

No response

Additional context

No response

[robertmu]

Thank you for submitting this feature request and for suggesting the --skip-existing functionality, similar to what gpcopy offers!

This is a valuable suggestion, as a feature to skip existing objects during migration can indeed be very useful in various scenarios, such as incremental migrations or when re-running a migration after a partial success. It can help prevent unwanted overwrites.

We appreciate you taking the time to share this idea with us. We'll definitely consider adding a --skip-existing option (or a similarly named feature that achieves this goal) in a future release of cbcopy. We'll evaluate its implementation details and how it best fits into the existing command-line options and workflow.

We'll keep this issue updated with any progress. Thanks again for your contribution!