SNOW-1658882: Please provide the option to copy grants when overwriting table using write_pandas

[surpatean]

What is the current behavior?

When overwrite=True and auto_create_table=True, the new table created by write_pandas is created with fresh grants.

What is the desired behavior?

I would like the option to copy the grants of the old table to the new table, similar to the optional COPY GRANTS parameter of CREATE OR REPLACE TABLE.

How would this improve snowflake-connector-python?

In some use-cases, it is preferred to have table-level grants, instead of db/schema-level future grants.

If the table needs to be overwritten with a new schema definition (e.g. for schema evolution), the option to maintain the permission profile of the table would be useful.

References and other background

I will follow-up with a PR.

[sfc-gh-sghosh]

Hello @surpatean ,

Thanks for raising the request; we are checking and will update you.

Regards,
Sujan

[sfc-gh-sghosh]

Hello @surpatean ,

We are checking if its feasible to add such feature or not with write_pandas API

Meanwhile, the following workaround can be used

1. Take a backup of Grants ( SHOW GRANTS ON TABLE <table_name>;)
2. wite_pandas ( session, <table_name>)
3. Reapply the grants GRANT SELECT ON TABLE <table_name> TO ROLE ;

Regards,
Sujan

[surpatean]

Thank you @sfc-gh-sghosh
I also submitted a PR (based on the SQL copy grants parameter), which I think solves it.

[sfc-gh-sghosh]

Hello @surpatean ,

Thanks for submitting the PR, we are reviewing it, will update.

Regards,
Sujan