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## Summary Closes #3412 Implements `rename_table` for `LanceNamespaceDatabase` (sync and async Python) and the Rust `NamespaceDatabase` backend. Previously these raised `NotImplementedError`; this PR delegates to the `LanceNamespace.rename_table` method which is part of the lance-namespace spec. ### Changes - **`rust/lancedb/src/database/namespace.rs`**: Remove the `NotImplementedError` stub for `rename_table`. Build a `RenameTableRequest` (with `id`, `new_table_name`, and optionally `new_namespace_id`) and call `self.namespace.rename_table(...)`, mirroring the existing `drop_table` pattern. - **`python/python/lancedb/namespace.py`**: Import `RenameTableRequest` from `lance_namespace`. Replace the `raise NotImplementedError` in both `LanceNamespaceDatabase.rename_table` (sync) and `AsyncLanceNamespaceDatabase.rename_table` (async) with a call to `self._namespace_client.rename_table(request)`. - **`python/python/tests/test_namespace.py`**: Replace the `test_rename_table_not_supported` test (which checked for `NotImplementedError`) with `test_rename_table`, which: 1. Creates a table in a namespace 2. Calls `rename_table` with `cur_namespace_path` and `new_namespace_path` 3. Asserts the old name is gone from `table_names()` 4. Asserts the new name appears in `table_names()` 5. Verifies the renamed table can be opened ## Test plan - [ ] Existing namespace tests pass in CI (all rely on `lance.namespace.DirectoryNamespace` which requires the full lance package) - [ ] `test_rename_table` exercises the full rename path: create → rename → verify old gone → verify new present → open - [ ] Rust build passes with the updated `namespace.rs` (requires Rust toolchain in CI)
LanceDB Python SDK
A Python library for LanceDB.
Installation
pip install lancedb
Preview Releases
Stable releases are created about every 2 weeks. For the latest features and bug fixes, you can install the preview release. These releases receive the same level of testing as stable releases, but are not guaranteed to be available for more than 6 months after they are released. Once your application is stable, we recommend switching to stable releases.
pip install --pre --extra-index-url https://pypi.fury.io/lancedb/ lancedb
Usage
Basic Example
import lancedb
db = lancedb.connect('<PATH_TO_LANCEDB_DATASET>')
table = db.open_table('my_table')
results = table.search([0.1, 0.3]).limit(20).to_list()
print(results)
Development
See CONTRIBUTING.md for information on how to contribute to LanceDB.