Iceberg REST Catalog DELETE FROM Support

[c-thiel]

Feature request

Is your feature request related to a problem? Please describe.

I want to delete rows from a Table stored in an Iceberg REST Catalog.

Describe the solution you'd like

Support Delete and document supported / not supported operations.

Additional context

Steps to reproduce:

• Clone the lakekeeper catalog repository and run this docker compose (comes with starrocks): https://github.com/lakekeeper/lakekeeper/tree/main/examples/self-contained
• Open localhost:8888
• Execute the Starrocks Notebook
• Add the following line: connection.execute("DELETE FROM starrocks_namespace.my_table where my_ints = 1")

Error: (1064, "Getting analyzing error. Detail message: Table of iceberg catalog doesn't support [DELETE].")

[Dshadowzh]

Thanks for feedback, delete and merge in Iceberg are not supported now, but we'll support in next few versions.