Bump version: 0.25.0-beta.2 → 0.25.0

This changes the default values for some namespace parameters in the
remote python SDK from None to [], to match the underlying code it
calls.

Prior to this commit, failing to supply "namespace" with the remote SDK
would cause an error because the underlying code it dispatches to does
not consider None to be valid input.

.bumpversion.toml

@@ -1,5 +1,5 @@
 [tool.bumpversion]
-current_version = "0.21.4-beta.0"
+current_version = "0.22.0-beta.1"
 parse = """(?x)
     (?P<major>0|[1-9]\\d*)\\.
     (?P<minor>0|[1-9]\\d*)\\.

Cargo.toml

@@ -15,14 +15,14 @@ categories = ["database-implementations"]
 rust-version = "1.78.0"
 
 [workspace.dependencies]
-lance = { "version" = "=0.33.0", default-features = false, "features" = ["dynamodb"], "tag" = "v0.33.0-beta.4", "git" = "https://github.com/lancedb/lance.git" }
+lance = { "version" = "=0.35.0", default-features = false, "features" = ["dynamodb"] }
-lance-io = { "version" = "=0.33.0", default-features = false, "tag" = "v0.33.0-beta.4", "git" = "https://github.com/lancedb/lance.git" }
+lance-io = { "version" = "=0.35.0", default-features = false }
-lance-index = { "version" = "=0.33.0", "tag" = "v0.33.0-beta.4", "git" = "https://github.com/lancedb/lance.git" }
+lance-index = { "version" = "=0.35.0" }
-lance-linalg = { "version" = "=0.33.0", "tag" = "v0.33.0-beta.4", "git" = "https://github.com/lancedb/lance.git" }
+lance-linalg = { "version" = "=0.35.0" }
-lance-table = { "version" = "=0.33.0", "tag" = "v0.33.0-beta.4", "git" = "https://github.com/lancedb/lance.git" }
+lance-table = { "version" = "=0.35.0" }
-lance-testing = { "version" = "=0.33.0", "tag" = "v0.33.0-beta.4", "git" = "https://github.com/lancedb/lance.git" }
+lance-testing = { "version" = "=0.35.0" }
-lance-datafusion = { "version" = "=0.33.0", "tag" = "v0.33.0-beta.4", "git" = "https://github.com/lancedb/lance.git" }
+lance-datafusion = { "version" = "=0.35.0" }
-lance-encoding = { "version" = "=0.33.0", "tag" = "v0.33.0-beta.4", "git" = "https://github.com/lancedb/lance.git" }
+lance-encoding = { "version" = "=0.35.0" }
 # Note that this one does not include pyarrow
 arrow = { version = "55.1", optional = false }
 arrow-array = "55.1"

java/core/pom.xml

@@ -8,7 +8,7 @@
     <parent>
         <groupId>com.lancedb</groupId>
         <artifactId>lancedb-parent</artifactId>
-        <version>0.21.4-beta.0</version>
+        <version>0.22.0-beta.1</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
 

java/lance-namespace/pom.xml

@@ -8,7 +8,7 @@
     <parent>
         <groupId>com.lancedb</groupId>
         <artifactId>lancedb-parent</artifactId>
-        <version>0.21.4-beta.0</version>
+        <version>0.22.0-beta.1</version>
         <relativePath>../pom.xml</relativePath>
     </parent>
 

java/pom.xml

@@ -6,7 +6,7 @@
 
     <groupId>com.lancedb</groupId>
     <artifactId>lancedb-parent</artifactId>
-    <version>0.21.4-beta.0</version>
+    <version>0.22.0-beta.1</version>
     <packaging>pom</packaging>
     <name>${project.artifactId}</name>
     <description>LanceDB Java SDK Parent POM</description>

nodejs/Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "lancedb-nodejs"
 edition.workspace = true
-version = "0.21.4-beta.0"
+version = "0.22.0-beta.1"
 license.workspace = true
 description.workspace = true
 repository.workspace = true

nodejs/lancedb/connection.ts

@@ -159,17 +159,33 @@ export abstract class Connection {
    *
    * Tables will be returned in lexicographical order.
    * @param {Partial<TableNamesOptions>} options - options to control the
-   * paging / start point
+   * paging / start point (backwards compatibility)
    *
    */
   abstract tableNames(options?: Partial<TableNamesOptions>): Promise<string[]>;
+  /**
+   * List all the table names in this database.
+   *
+   * Tables will be returned in lexicographical order.
+   * @param {string[]} namespace - The namespace to list tables from (defaults to root namespace)
+   * @param {Partial<TableNamesOptions>} options - options to control the
+   * paging / start point
+   *
+   */
+  abstract tableNames(
+    namespace?: string[],
+    options?: Partial<TableNamesOptions>,
+  ): Promise<string[]>;
 
   /**
    * Open a table in the database.
    * @param {string} name - The name of the table
+   * @param {string[]} namespace - The namespace of the table (defaults to root namespace)
+   * @param {Partial<OpenTableOptions>} options - Additional options
    */
   abstract openTable(
     name: string,
+    namespace?: string[],
     options?: Partial<OpenTableOptions>,
   ): Promise<Table>;
 
@@ -178,6 +194,7 @@ export abstract class Connection {
    * @param {object} options - The options object.
    * @param {string} options.name - The name of the table.
    * @param {Data} options.data - Non-empty Array of Records to be inserted into the table
+   * @param {string[]} namespace - The namespace to create the table in (defaults to root namespace)
    *
    */
   abstract createTable(
@@ -185,40 +202,72 @@ export abstract class Connection {
       name: string;
       data: Data;
     } & Partial<CreateTableOptions>,
+    namespace?: string[],
   ): Promise<Table>;
   /**
    * Creates a new Table and initialize it with new data.
    * @param {string} name - The name of the table.
    * @param {Record<string, unknown>[] | TableLike} data - Non-empty Array of Records
    * to be inserted into the table
+   * @param {Partial<CreateTableOptions>} options - Additional options (backwards compatibility)
    */
   abstract createTable(
     name: string,
     data: Record<string, unknown>[] | TableLike,
     options?: Partial<CreateTableOptions>,
   ): Promise<Table>;
+  /**
+   * Creates a new Table and initialize it with new data.
+   * @param {string} name - The name of the table.
+   * @param {Record<string, unknown>[] | TableLike} data - Non-empty Array of Records
+   * to be inserted into the table
+   * @param {string[]} namespace - The namespace to create the table in (defaults to root namespace)
+   * @param {Partial<CreateTableOptions>} options - Additional options
+   */
+  abstract createTable(
+    name: string,
+    data: Record<string, unknown>[] | TableLike,
+    namespace?: string[],
+    options?: Partial<CreateTableOptions>,
+  ): Promise<Table>;
 
   /**
    * Creates a new empty Table
    * @param {string} name - The name of the table.
    * @param {Schema} schema - The schema of the table
+   * @param {Partial<CreateTableOptions>} options - Additional options (backwards compatibility)
    */
   abstract createEmptyTable(
     name: string,
     schema: import("./arrow").SchemaLike,
     options?: Partial<CreateTableOptions>,
   ): Promise<Table>;
+  /**
+   * Creates a new empty Table
+   * @param {string} name - The name of the table.
+   * @param {Schema} schema - The schema of the table
+   * @param {string[]} namespace - The namespace to create the table in (defaults to root namespace)
+   * @param {Partial<CreateTableOptions>} options - Additional options
+   */
+  abstract createEmptyTable(
+    name: string,
+    schema: import("./arrow").SchemaLike,
+    namespace?: string[],
+    options?: Partial<CreateTableOptions>,
+  ): Promise<Table>;
 
   /**
    * Drop an existing table.
    * @param {string} name The name of the table to drop.
+   * @param {string[]} namespace The namespace of the table (defaults to root namespace).
    */
-  abstract dropTable(name: string): Promise<void>;
+  abstract dropTable(name: string, namespace?: string[]): Promise<void>;
 
   /**
    * Drop all tables in the database.
+   * @param {string[]} namespace The namespace to drop tables from (defaults to root namespace).
    */
-  abstract dropAllTables(): Promise<void>;
+  abstract dropAllTables(namespace?: string[]): Promise<void>;
 }
 
 /** @hideconstructor */
@@ -243,16 +292,39 @@ export class LocalConnection extends Connection {
     return this.inner.display();
   }
 
-  async tableNames(options?: Partial<TableNamesOptions>): Promise<string[]> {
+  async tableNames(
-    return this.inner.tableNames(options?.startAfter, options?.limit);
+    namespaceOrOptions?: string[] | Partial<TableNamesOptions>,
+    options?: Partial<TableNamesOptions>,
+  ): Promise<string[]> {
+    // Detect if first argument is namespace array or options object
+    let namespace: string[] | undefined;
+    let tableNamesOptions: Partial<TableNamesOptions> | undefined;
+
+    if (Array.isArray(namespaceOrOptions)) {
+      // First argument is namespace array
+      namespace = namespaceOrOptions;
+      tableNamesOptions = options;
+    } else {
+      // First argument is options object (backwards compatibility)
+      namespace = undefined;
+      tableNamesOptions = namespaceOrOptions;
+    }
+
+    return this.inner.tableNames(
+      namespace ?? [],
+      tableNamesOptions?.startAfter,
+      tableNamesOptions?.limit,
+    );
   }
 
   async openTable(
     name: string,
+    namespace?: string[],
     options?: Partial<OpenTableOptions>,
   ): Promise<Table> {
     const innerTable = await this.inner.openTable(
       name,
+      namespace ?? [],
       cleanseStorageOptions(options?.storageOptions),
       options?.indexCacheSize,
     );
@@ -286,14 +358,44 @@ export class LocalConnection extends Connection {
     nameOrOptions:
       | string
       | ({ name: string; data: Data } & Partial<CreateTableOptions>),
-    data?: Record<string, unknown>[] | TableLike,
+    dataOrNamespace?: Record<string, unknown>[] | TableLike | string[],
+    namespaceOrOptions?: string[] | Partial<CreateTableOptions>,
     options?: Partial<CreateTableOptions>,
   ): Promise<Table> {
     if (typeof nameOrOptions !== "string" && "name" in nameOrOptions) {
-      const { name, data, ...options } = nameOrOptions;
+      // First overload: createTable(options, namespace?)
-
+      const { name, data, ...createOptions } = nameOrOptions;
-      return this.createTable(name, data, options);
+      const namespace = dataOrNamespace as string[] | undefined;
+      return this._createTableImpl(name, data, namespace, createOptions);
     }
+
+    // Second overload: createTable(name, data, namespace?, options?)
+    const name = nameOrOptions;
+    const data = dataOrNamespace as Record<string, unknown>[] | TableLike;
+
+    // Detect if third argument is namespace array or options object
+    let namespace: string[] | undefined;
+    let createOptions: Partial<CreateTableOptions> | undefined;
+
+    if (Array.isArray(namespaceOrOptions)) {
+      // Third argument is namespace array
+      namespace = namespaceOrOptions;
+      createOptions = options;
+    } else {
+      // Third argument is options object (backwards compatibility)
+      namespace = undefined;
+      createOptions = namespaceOrOptions;
+    }
+
+    return this._createTableImpl(name, data, namespace, createOptions);
+  }
+
+  private async _createTableImpl(
+    name: string,
+    data: Data,
+    namespace?: string[],
+    options?: Partial<CreateTableOptions>,
+  ): Promise<Table> {
     if (data === undefined) {
       throw new Error("data is required");
     }
@@ -302,9 +404,10 @@ export class LocalConnection extends Connection {
     const storageOptions = this.getStorageOptions(options);
 
     const innerTable = await this.inner.createTable(
-      nameOrOptions,
+      name,
       buf,
       mode,
+      namespace ?? [],
       storageOptions,
     );
 
@@ -314,39 +417,55 @@ export class LocalConnection extends Connection {
   async createEmptyTable(
     name: string,
     schema: import("./arrow").SchemaLike,
+    namespaceOrOptions?: string[] | Partial<CreateTableOptions>,
     options?: Partial<CreateTableOptions>,
   ): Promise<Table> {
-    let mode: string = options?.mode ?? "create";
+    // Detect if third argument is namespace array or options object
-    const existOk = options?.existOk ?? false;
+    let namespace: string[] | undefined;
+    let createOptions: Partial<CreateTableOptions> | undefined;
+
+    if (Array.isArray(namespaceOrOptions)) {
+      // Third argument is namespace array
+      namespace = namespaceOrOptions;
+      createOptions = options;
+    } else {
+      // Third argument is options object (backwards compatibility)
+      namespace = undefined;
+      createOptions = namespaceOrOptions;
+    }
+
+    let mode: string = createOptions?.mode ?? "create";
+    const existOk = createOptions?.existOk ?? false;
 
     if (mode === "create" && existOk) {
       mode = "exist_ok";
     }
     let metadata: Map<string, string> | undefined = undefined;
-    if (options?.embeddingFunction !== undefined) {
+    if (createOptions?.embeddingFunction !== undefined) {
-      const embeddingFunction = options.embeddingFunction;
+      const embeddingFunction = createOptions.embeddingFunction;
       const registry = getRegistry();
       metadata = registry.getTableMetadata([embeddingFunction]);
     }
 
-    const storageOptions = this.getStorageOptions(options);
+    const storageOptions = this.getStorageOptions(createOptions);
     const table = makeEmptyTable(schema, metadata);
     const buf = await fromTableToBuffer(table);
     const innerTable = await this.inner.createEmptyTable(
       name,
       buf,
       mode,
+      namespace ?? [],
       storageOptions,
     );
     return new LocalTable(innerTable);
   }
 
-  async dropTable(name: string): Promise<void> {
+  async dropTable(name: string, namespace?: string[]): Promise<void> {
-    return this.inner.dropTable(name);
+    return this.inner.dropTable(name, namespace ?? []);
   }
 
-  async dropAllTables(): Promise<void> {
+  async dropAllTables(namespace?: string[]): Promise<void> {
-    return this.inner.dropAllTables();
+    return this.inner.dropAllTables(namespace ?? []);
   }
 }
 

nodejs/npm/darwin-arm64/package.json

@@ -1,6 +1,6 @@
 {
 	"name": "@lancedb/lancedb-darwin-arm64",
-	"version": "0.21.4-beta.0",
+	"version": "0.22.0-beta.1",
 	"os": ["darwin"],
 	"cpu": ["arm64"],
 	"main": "lancedb.darwin-arm64.node",

nodejs/npm/darwin-x64/package.json

@@ -1,6 +1,6 @@
 {
 	"name": "@lancedb/lancedb-darwin-x64",
-	"version": "0.21.4-beta.0",
+	"version": "0.22.0-beta.1",
 	"os": ["darwin"],
 	"cpu": ["x64"],
 	"main": "lancedb.darwin-x64.node",

nodejs/npm/linux-arm64-gnu/package.json

@@ -1,6 +1,6 @@
 {
 	"name": "@lancedb/lancedb-linux-arm64-gnu",
-	"version": "0.21.4-beta.0",
+	"version": "0.22.0-beta.1",
 	"os": ["linux"],
 	"cpu": ["arm64"],
 	"main": "lancedb.linux-arm64-gnu.node",

nodejs/npm/linux-arm64-musl/package.json

@@ -1,6 +1,6 @@
 {
 	"name": "@lancedb/lancedb-linux-arm64-musl",
-	"version": "0.21.4-beta.0",
+	"version": "0.22.0-beta.1",
 	"os": ["linux"],
 	"cpu": ["arm64"],
 	"main": "lancedb.linux-arm64-musl.node",

nodejs/npm/linux-x64-gnu/package.json

@@ -1,6 +1,6 @@
 {
 	"name": "@lancedb/lancedb-linux-x64-gnu",
-	"version": "0.21.4-beta.0",
+	"version": "0.22.0-beta.1",
 	"os": ["linux"],
 	"cpu": ["x64"],
 	"main": "lancedb.linux-x64-gnu.node",

nodejs/npm/linux-x64-musl/package.json

@@ -1,6 +1,6 @@
 {
 	"name": "@lancedb/lancedb-linux-x64-musl",
-	"version": "0.21.4-beta.0",
+	"version": "0.22.0-beta.1",
 	"os": ["linux"],
 	"cpu": ["x64"],
 	"main": "lancedb.linux-x64-musl.node",

nodejs/npm/win32-arm64-msvc/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@lancedb/lancedb-win32-arm64-msvc",
-  "version": "0.21.4-beta.0",
+  "version": "0.22.0-beta.1",
   "os": [
     "win32"
   ],

nodejs/npm/win32-x64-msvc/package.json

@@ -1,6 +1,6 @@
 {
 	"name": "@lancedb/lancedb-win32-x64-msvc",
-	"version": "0.21.4-beta.0",
+	"version": "0.22.0-beta.1",
 	"os": ["win32"],
 	"cpu": ["x64"],
 	"main": "lancedb.win32-x64-msvc.node",

nodejs/package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "@lancedb/lancedb",
-  "version": "0.21.4-beta.0",
+  "version": "0.22.0-beta.1",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@lancedb/lancedb",
-      "version": "0.21.4-beta.0",
+      "version": "0.22.0-beta.1",
       "cpu": [
         "x64",
         "arm64"

nodejs/package.json

@@ -11,7 +11,7 @@
     "ann"
   ],
   "private": false,
-  "version": "0.21.4-beta.0",
+  "version": "0.22.0-beta.1",
   "main": "dist/index.js",
   "exports": {
     ".": "./dist/index.js",

nodejs/src/connection.rs

@@ -100,10 +100,12 @@ impl Connection {
     #[napi(catch_unwind)]
     pub async fn table_names(
         &self,
+        namespace: Vec<String>,
         start_after: Option<String>,
         limit: Option<u32>,
     ) -> napi::Result<Vec<String>> {
         let mut op = self.get_inner()?.table_names();
+        op = op.namespace(namespace);
         if let Some(start_after) = start_after {
             op = op.start_after(start_after);
         }
@@ -125,6 +127,7 @@ impl Connection {
         name: String,
         buf: Buffer,
         mode: String,
+        namespace: Vec<String>,
         storage_options: Option<HashMap<String, String>>,
     ) -> napi::Result<Table> {
         let batches = ipc_file_to_batches(buf.to_vec())
@@ -132,6 +135,8 @@ impl Connection {
         let mode = Self::parse_create_mode_str(&mode)?;
         let mut builder = self.get_inner()?.create_table(&name, batches).mode(mode);
 
+        builder = builder.namespace(namespace);
+
         if let Some(storage_options) = storage_options {
             for (key, value) in storage_options {
                 builder = builder.storage_option(key, value);
@@ -147,6 +152,7 @@ impl Connection {
         name: String,
         schema_buf: Buffer,
         mode: String,
+        namespace: Vec<String>,
         storage_options: Option<HashMap<String, String>>,
     ) -> napi::Result<Table> {
         let schema = ipc_file_to_schema(schema_buf.to_vec()).map_err(|e| {
@@ -157,6 +163,9 @@ impl Connection {
             .get_inner()?
             .create_empty_table(&name, schema)
             .mode(mode);
+
+        builder = builder.namespace(namespace);
+
         if let Some(storage_options) = storage_options {
             for (key, value) in storage_options {
                 builder = builder.storage_option(key, value);
@@ -170,10 +179,14 @@ impl Connection {
     pub async fn open_table(
         &self,
         name: String,
+        namespace: Vec<String>,
         storage_options: Option<HashMap<String, String>>,
         index_cache_size: Option<u32>,
     ) -> napi::Result<Table> {
         let mut builder = self.get_inner()?.open_table(&name);
+
+        builder = builder.namespace(namespace);
+
         if let Some(storage_options) = storage_options {
             for (key, value) in storage_options {
                 builder = builder.storage_option(key, value);
@@ -188,12 +201,18 @@ impl Connection {
 
     /// Drop table with the name. Or raise an error if the table does not exist.
     #[napi(catch_unwind)]
-    pub async fn drop_table(&self, name: String) -> napi::Result<()> {
+    pub async fn drop_table(&self, name: String, namespace: Vec<String>) -> napi::Result<()> {
-        self.get_inner()?.drop_table(&name).await.default_error()
+        self.get_inner()?
+            .drop_table(&name, &namespace)
+            .await
+            .default_error()
     }
 
     #[napi(catch_unwind)]
-    pub async fn drop_all_tables(&self) -> napi::Result<()> {
+    pub async fn drop_all_tables(&self, namespace: Vec<String>) -> napi::Result<()> {
-        self.get_inner()?.drop_all_tables().await.default_error()
+        self.get_inner()?
+            .drop_all_tables(&namespace)
+            .await
+            .default_error()
     }
 }

nodejs/src/query.rs

@@ -480,6 +480,7 @@ impl JsFullTextQuery {
     }
 
     #[napi(factory)]
+    #[allow(clippy::use_self)] // NAPI doesn't allow Self here but clippy reports it
     pub fn boolean_query(queries: Vec<(String, &JsFullTextQuery)>) -> napi::Result<Self> {
         let mut sub_queries = Vec::with_capacity(queries.len());
         for (occur, q) in queries {

nodejs/src/remote.rs

@@ -76,6 +76,7 @@ pub struct ClientConfig {
     pub retry_config: Option<RetryConfig>,
     pub timeout_config: Option<TimeoutConfig>,
     pub extra_headers: Option<HashMap<String, String>>,
+    pub id_delimiter: Option<String>,
 }
 
 impl From<TimeoutConfig> for lancedb::remote::TimeoutConfig {
@@ -115,6 +116,7 @@ impl From<ClientConfig> for lancedb::remote::ClientConfig {
             retry_config: config.retry_config.map(Into::into).unwrap_or_default(),
             timeout_config: config.timeout_config.map(Into::into).unwrap_or_default(),
             extra_headers: config.extra_headers.unwrap_or_default(),
+            id_delimiter: config.id_delimiter,
         }
     }
 }

nodejs/src/session.rs

@@ -94,7 +94,7 @@ impl napi::bindgen_prelude::FromNapiValue for Session {
         env: napi::sys::napi_env,
         napi_val: napi::sys::napi_value,
     ) -> napi::Result<Self> {
-        let object: napi::bindgen_prelude::ClassInstance<Session> =
+        let object: napi::bindgen_prelude::ClassInstance<Self> =
             napi::bindgen_prelude::ClassInstance::from_napi_value(env, napi_val)?;
         let copy = object.clone();
         Ok(copy)

python/.bumpversion.toml

@@ -1,5 +1,5 @@
 [tool.bumpversion]
-current_version = "0.24.4-beta.1"
+current_version = "0.25.0"
 parse = """(?x)
     (?P<major>0|[1-9]\\d*)\\.
     (?P<minor>0|[1-9]\\d*)\\.

python/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "lancedb-python"
-version = "0.24.4-beta.1"
+version = "0.25.0"
 edition.workspace = true
 description = "Python bindings for LanceDB"
 license.workspace = true

python/python/lancedb/_lancedb.pyi

@@ -21,14 +21,28 @@ class Session:
 
 class Connection(object):
     uri: str
+    async def is_open(self): ...
+    async def close(self): ...
+    async def list_namespaces(
+        self,
+        namespace: List[str],
+        page_token: Optional[str],
+        limit: Optional[int],
+    ) -> List[str]: ...
+    async def create_namespace(self, namespace: List[str]) -> None: ...
+    async def drop_namespace(self, namespace: List[str]) -> None: ...
     async def table_names(
-        self, start_after: Optional[str], limit: Optional[int]
+        self,
+        namespace: List[str],
+        start_after: Optional[str],
+        limit: Optional[int],
     ) -> list[str]: ...
     async def create_table(
         self,
         name: str,
         mode: str,
         data: pa.RecordBatchReader,
+        namespace: List[str] = [],
         storage_options: Optional[Dict[str, str]] = None,
     ) -> Table: ...
     async def create_empty_table(
@@ -36,10 +50,25 @@ class Connection(object):
         name: str,
         mode: str,
         schema: pa.Schema,
+        namespace: List[str] = [],
         storage_options: Optional[Dict[str, str]] = None,
     ) -> Table: ...
-    async def rename_table(self, old_name: str, new_name: str) -> None: ...
+    async def open_table(
-    async def drop_table(self, name: str) -> None: ...
+        self,
+        name: str,
+        namespace: List[str] = [],
+        storage_options: Optional[Dict[str, str]] = None,
+        index_cache_size: Optional[int] = None,
+    ) -> Table: ...
+    async def rename_table(
+        self,
+        cur_name: str,
+        new_name: str,
+        cur_namespace: List[str] = [],
+        new_namespace: List[str] = [],
+    ) -> None: ...
+    async def drop_table(self, name: str, namespace: List[str] = []) -> None: ...
+    async def drop_all_tables(self, namespace: List[str] = []) -> None: ...
 
 class Table:
     def name(self) -> str: ...

python/python/lancedb/db.py

@@ -43,14 +43,70 @@ if TYPE_CHECKING:
 class DBConnection(EnforceOverrides):
     """An active LanceDB connection interface."""
 
+    def list_namespaces(
+        self,
+        namespace: List[str] = [],
+        page_token: Optional[str] = None,
+        limit: int = 10,
+    ) -> Iterable[str]:
+        """List immediate child namespace names in the given namespace.
+
+        Parameters
+        ----------
+        namespace: List[str], default []
+            The parent namespace to list namespaces in.
+            Empty list represents root namespace.
+        page_token: str, optional
+            The token to use for pagination. If not present, start from the beginning.
+        limit: int, default 10
+            The size of the page to return.
+
+        Returns
+        -------
+        Iterable of str
+            List of immediate child namespace names
+        """
+        return []
+
+    def create_namespace(self, namespace: List[str]) -> None:
+        """Create a new namespace.
+
+        Parameters
+        ----------
+        namespace: List[str]
+            The namespace identifier to create.
+        """
+        raise NotImplementedError(
+            "Namespace operations are not supported for this connection type"
+        )
+
+    def drop_namespace(self, namespace: List[str]) -> None:
+        """Drop a namespace.
+
+        Parameters
+        ----------
+        namespace: List[str]
+            The namespace identifier to drop.
+        """
+        raise NotImplementedError(
+            "Namespace operations are not supported for this connection type"
+        )
+
     @abstractmethod
     def table_names(
-        self, page_token: Optional[str] = None, limit: int = 10
+        self,
+        page_token: Optional[str] = None,
+        limit: int = 10,
+        *,
+        namespace: List[str] = [],
     ) -> Iterable[str]:
         """List all tables in this database, in sorted order
 
         Parameters
         ----------
+        namespace: List[str], default []
+            The namespace to list tables in.
+            Empty list represents root namespace.
         page_token: str, optional
             The token to use for pagination. If not present, start from the beginning.
             Typically, this token is last table name from the previous page.
@@ -77,6 +133,7 @@ class DBConnection(EnforceOverrides):
         fill_value: float = 0.0,
         embedding_functions: Optional[List[EmbeddingFunctionConfig]] = None,
         *,
+        namespace: List[str] = [],
         storage_options: Optional[Dict[str, str]] = None,
         data_storage_version: Optional[str] = None,
         enable_v2_manifest_paths: Optional[bool] = None,
@@ -87,6 +144,9 @@ class DBConnection(EnforceOverrides):
         ----------
         name: str
             The name of the table.
+        namespace: List[str], default []
+            The namespace to create the table in.
+            Empty list represents root namespace.
         data: The data to initialize the table, *optional*
             User must provide at least one of `data` or `schema`.
             Acceptable types are:
@@ -238,6 +298,7 @@ class DBConnection(EnforceOverrides):
         self,
         name: str,
         *,
+        namespace: List[str] = [],
         storage_options: Optional[Dict[str, str]] = None,
         index_cache_size: Optional[int] = None,
     ) -> Table:
@@ -247,6 +308,9 @@ class DBConnection(EnforceOverrides):
         ----------
         name: str
             The name of the table.
+        namespace: List[str], optional
+            The namespace to open the table from.
+            None or empty list represents root namespace.
         index_cache_size: int, default 256
             **Deprecated**: Use session-level cache configuration instead.
             Create a Session with custom cache sizes and pass it to lancedb.connect().
@@ -272,17 +336,26 @@ class DBConnection(EnforceOverrides):
         """
         raise NotImplementedError
 
-    def drop_table(self, name: str):
+    def drop_table(self, name: str, namespace: List[str] = []):
         """Drop a table from the database.
 
         Parameters
         ----------
         name: str
             The name of the table.
+        namespace: List[str], default []
+            The namespace to drop the table from.
+            Empty list represents root namespace.
         """
         raise NotImplementedError
 
-    def rename_table(self, cur_name: str, new_name: str):
+    def rename_table(
+        self,
+        cur_name: str,
+        new_name: str,
+        cur_namespace: List[str] = [],
+        new_namespace: List[str] = [],
+    ):
         """Rename a table in the database.
 
         Parameters
@@ -291,6 +364,12 @@ class DBConnection(EnforceOverrides):
             The current name of the table.
         new_name: str
             The new name of the table.
+        cur_namespace: List[str], optional
+            The namespace of the current table.
+            None or empty list represents root namespace.
+        new_namespace: List[str], optional
+            The namespace to move the table to.
+            If not specified, defaults to the same as cur_namespace.
         """
         raise NotImplementedError
 
@@ -301,9 +380,15 @@ class DBConnection(EnforceOverrides):
         """
         raise NotImplementedError
 
-    def drop_all_tables(self):
+    def drop_all_tables(self, namespace: List[str] = []):
         """
         Drop all tables from the database
+
+        Parameters
+        ----------
+        namespace: List[str], optional
+            The namespace to drop all tables from.
+            None or empty list represents root namespace.
         """
         raise NotImplementedError
 
@@ -404,18 +489,87 @@ class LanceDBConnection(DBConnection):
         conn = AsyncConnection(await lancedb_connect(self.uri))
         return await conn.table_names(start_after=start_after, limit=limit)
 
+    @override
+    def list_namespaces(
+        self,
+        namespace: List[str] = [],
+        page_token: Optional[str] = None,
+        limit: int = 10,
+    ) -> Iterable[str]:
+        """List immediate child namespace names in the given namespace.
+
+        Parameters
+        ----------
+        namespace: List[str], optional
+            The parent namespace to list namespaces in.
+            None or empty list represents root namespace.
+        page_token: str, optional
+            The token to use for pagination. If not present, start from the beginning.
+        limit: int, default 10
+            The size of the page to return.
+
+        Returns
+        -------
+        Iterable of str
+            List of immediate child namespace names
+        """
+        return LOOP.run(
+            self._conn.list_namespaces(
+                namespace=namespace, page_token=page_token, limit=limit
+            )
+        )
+
+    @override
+    def create_namespace(self, namespace: List[str]) -> None:
+        """Create a new namespace.
+
+        Parameters
+        ----------
+        namespace: List[str]
+            The namespace identifier to create.
+        """
+        LOOP.run(self._conn.create_namespace(namespace=namespace))
+
+    @override
+    def drop_namespace(self, namespace: List[str]) -> None:
+        """Drop a namespace.
+
+        Parameters
+        ----------
+        namespace: List[str]
+            The namespace identifier to drop.
+        """
+        return LOOP.run(self._conn.drop_namespace(namespace=namespace))
+
     @override
     def table_names(
-        self, page_token: Optional[str] = None, limit: int = 10
+        self,
+        page_token: Optional[str] = None,
+        limit: int = 10,
+        *,
+        namespace: List[str] = [],
     ) -> Iterable[str]:
         """Get the names of all tables in the database. The names are sorted.
 
+        Parameters
+        ----------
+        namespace: List[str], optional
+            The namespace to list tables in.
+        page_token: str, optional
+            The token to use for pagination.
+        limit: int, default 10
+            The maximum number of tables to return.
+
         Returns
         -------
         Iterator of str.
             A list of table names.
         """
-        return LOOP.run(self._conn.table_names(start_after=page_token, limit=limit))
+        return LOOP.run(
+            self._conn.table_names(
+                namespace=namespace, start_after=page_token, limit=limit
+            )
+        )
 
     def __len__(self) -> int:
         return len(self.table_names())
@@ -435,12 +589,18 @@ class LanceDBConnection(DBConnection):
         fill_value: float = 0.0,
         embedding_functions: Optional[List[EmbeddingFunctionConfig]] = None,
         *,
+        namespace: List[str] = [],
         storage_options: Optional[Dict[str, str]] = None,
         data_storage_version: Optional[str] = None,
         enable_v2_manifest_paths: Optional[bool] = None,
     ) -> LanceTable:
         """Create a table in the database.
 
+        Parameters
+        ----------
+        namespace: List[str], optional
+            The namespace to create the table in.
+
         See
         ---
         DBConnection.create_table
@@ -459,6 +619,7 @@ class LanceDBConnection(DBConnection):
             on_bad_vectors=on_bad_vectors,
             fill_value=fill_value,
             embedding_functions=embedding_functions,
+            namespace=namespace,
             storage_options=storage_options,
         )
         return tbl
@@ -468,6 +629,7 @@ class LanceDBConnection(DBConnection):
         self,
         name: str,
         *,
+        namespace: List[str] = [],
         storage_options: Optional[Dict[str, str]] = None,
         index_cache_size: Optional[int] = None,
     ) -> LanceTable:
@@ -477,6 +639,8 @@ class LanceDBConnection(DBConnection):
         ----------
         name: str
             The name of the table.
+        namespace: List[str], optional
+            The namespace to open the table from.
 
         Returns
         -------
@@ -496,26 +660,68 @@ class LanceDBConnection(DBConnection):
         return LanceTable.open(
             self,
             name,
+            namespace=namespace,
             storage_options=storage_options,
             index_cache_size=index_cache_size,
         )
 
     @override
-    def drop_table(self, name: str, ignore_missing: bool = False):
+    def drop_table(
+        self,
+        name: str,
+        namespace: List[str] = [],
+        ignore_missing: bool = False,
+    ):
         """Drop a table from the database.
 
         Parameters
         ----------
         name: str
             The name of the table.
+        namespace: List[str], optional
+            The namespace to drop the table from.
         ignore_missing: bool, default False
             If True, ignore if the table does not exist.
         """
-        LOOP.run(self._conn.drop_table(name, ignore_missing=ignore_missing))
+        LOOP.run(
+            self._conn.drop_table(
+                name, namespace=namespace, ignore_missing=ignore_missing
+            )
+        )
 
     @override
-    def drop_all_tables(self):
+    def drop_all_tables(self, namespace: List[str] = []):
-        LOOP.run(self._conn.drop_all_tables())
+        LOOP.run(self._conn.drop_all_tables(namespace=namespace))
+
+    @override
+    def rename_table(
+        self,
+        cur_name: str,
+        new_name: str,
+        cur_namespace: List[str] = [],
+        new_namespace: List[str] = [],
+    ):
+        """Rename a table in the database.
+
+        Parameters
+        ----------
+        cur_name: str
+            The current name of the table.
+        new_name: str
+            The new name of the table.
+        cur_namespace: List[str], optional
+            The namespace of the current table.
+        new_namespace: List[str], optional
+            The namespace to move the table to.
+        """
+        LOOP.run(
+            self._conn.rename_table(
+                cur_name,
+                new_name,
+                cur_namespace=cur_namespace,
+                new_namespace=new_namespace,
+            )
+        )
 
     @deprecation.deprecated(
         deprecated_in="0.15.1",
@@ -588,13 +794,67 @@ class AsyncConnection(object):
     def uri(self) -> str:
         return self._inner.uri
 
+    async def list_namespaces(
+        self,
+        namespace: List[str] = [],
+        page_token: Optional[str] = None,
+        limit: int = 10,
+    ) -> Iterable[str]:
+        """List immediate child namespace names in the given namespace.
+
+        Parameters
+        ----------
+        namespace: List[str], optional
+            The parent namespace to list namespaces in.
+            None or empty list represents root namespace.
+        page_token: str, optional
+            The token to use for pagination. If not present, start from the beginning.
+        limit: int, default 10
+            The size of the page to return.
+
+        Returns
+        -------
+        Iterable of str
+            List of immediate child namespace names (not full paths)
+        """
+        return await self._inner.list_namespaces(
+            namespace=namespace, page_token=page_token, limit=limit
+        )
+
+    async def create_namespace(self, namespace: List[str]) -> None:
+        """Create a new namespace.
+
+        Parameters
+        ----------
+        namespace: List[str]
+            The namespace identifier to create.
+        """
+        await self._inner.create_namespace(namespace)
+
+    async def drop_namespace(self, namespace: List[str]) -> None:
+        """Drop a namespace.
+
+        Parameters
+        ----------
+        namespace: List[str]
+            The namespace identifier to drop.
+        """
+        await self._inner.drop_namespace(namespace)
+
     async def table_names(
-        self, *, start_after: Optional[str] = None, limit: Optional[int] = None
+        self,
+        *,
+        namespace: List[str] = [],
+        start_after: Optional[str] = None,
+        limit: Optional[int] = None,
     ) -> Iterable[str]:
         """List all tables in this database, in sorted order
 
         Parameters
         ----------
+        namespace: List[str], optional
+            The namespace to list tables in.
+            None or empty list represents root namespace.
         start_after: str, optional
             If present, only return names that come lexicographically after the supplied
             value.
@@ -608,7 +868,9 @@ class AsyncConnection(object):
         -------
         Iterable of str
         """
-        return await self._inner.table_names(start_after=start_after, limit=limit)
+        return await self._inner.table_names(
+            namespace=namespace, start_after=start_after, limit=limit
+        )
 
     async def create_table(
         self,
@@ -621,6 +883,7 @@ class AsyncConnection(object):
         fill_value: Optional[float] = None,
         storage_options: Optional[Dict[str, str]] = None,
         *,
+        namespace: List[str] = [],
         embedding_functions: Optional[List[EmbeddingFunctionConfig]] = None,
     ) -> AsyncTable:
         """Create an [AsyncTable][lancedb.table.AsyncTable] in the database.
@@ -629,6 +892,9 @@ class AsyncConnection(object):
         ----------
         name: str
             The name of the table.
+        namespace: List[str], default []
+            The namespace to create the table in.
+            Empty list represents root namespace.
         data: The data to initialize the table, *optional*
             User must provide at least one of `data` or `schema`.
             Acceptable types are:
@@ -807,6 +1073,7 @@ class AsyncConnection(object):
                 name,
                 mode,
                 schema,
+                namespace=namespace,
                 storage_options=storage_options,
             )
         else:
@@ -815,6 +1082,7 @@ class AsyncConnection(object):
                 name,
                 mode,
                 data,
+                namespace=namespace,
                 storage_options=storage_options,
             )
 
@@ -823,6 +1091,8 @@ class AsyncConnection(object):
     async def open_table(
         self,
         name: str,
+        *,
+        namespace: List[str] = [],
         storage_options: Optional[Dict[str, str]] = None,
         index_cache_size: Optional[int] = None,
     ) -> AsyncTable:
@@ -832,6 +1102,9 @@ class AsyncConnection(object):
         ----------
         name: str
             The name of the table.
+        namespace: List[str], optional
+            The namespace to open the table from.
+            None or empty list represents root namespace.
         storage_options: dict, optional
             Additional options for the storage backend. Options already set on the
             connection will be inherited by the table, but can be overridden here.
@@ -855,42 +1128,77 @@ class AsyncConnection(object):
         -------
         A LanceTable object representing the table.
         """
-        table = await self._inner.open_table(name, storage_options, index_cache_size)
+        table = await self._inner.open_table(
+            name,
+            namespace=namespace,
+            storage_options=storage_options,
+            index_cache_size=index_cache_size,
+        )
         return AsyncTable(table)
 
-    async def rename_table(self, old_name: str, new_name: str):
+    async def rename_table(
+        self,
+        cur_name: str,
+        new_name: str,
+        cur_namespace: List[str] = [],
+        new_namespace: List[str] = [],
+    ):
         """Rename a table in the database.
 
         Parameters
         ----------
-        old_name: str
+        cur_name: str
             The current name of the table.
         new_name: str
             The new name of the table.
+        cur_namespace: List[str], optional
+            The namespace of the current table.
+            None or empty list represents root namespace.
+        new_namespace: List[str], optional
+            The namespace to move the table to.
+            If not specified, defaults to the same as cur_namespace.
         """
-        await self._inner.rename_table(old_name, new_name)
+        await self._inner.rename_table(
+            cur_name, new_name, cur_namespace=cur_namespace, new_namespace=new_namespace
+        )
 
-    async def drop_table(self, name: str, *, ignore_missing: bool = False):
+    async def drop_table(
+        self,
+        name: str,
+        *,
+        namespace: List[str] = [],
+        ignore_missing: bool = False,
+    ):
         """Drop a table from the database.
 
         Parameters
         ----------
         name: str
             The name of the table.
+        namespace: List[str], default []
+            The namespace to drop the table from.
+            Empty list represents root namespace.
         ignore_missing: bool, default False
             If True, ignore if the table does not exist.
         """
         try:
-            await self._inner.drop_table(name)
+            await self._inner.drop_table(name, namespace=namespace)
         except ValueError as e:
             if not ignore_missing:
                 raise e
             if f"Table '{name}' was not found" not in str(e):
                 raise e
 
-    async def drop_all_tables(self):
+    async def drop_all_tables(self, namespace: List[str] = []):
-        """Drop all tables from the database."""
+        """Drop all tables from the database.
-        await self._inner.drop_all_tables()
+
+        Parameters
+        ----------
+        namespace: List[str], optional
+            The namespace to drop all tables from.
+            None or empty list represents root namespace.
+        """
+        await self._inner.drop_all_tables(namespace=namespace)
 
     @deprecation.deprecated(
         deprecated_in="0.15.1",

python/python/lancedb/namespace.py

@@ -26,6 +26,9 @@ from lance_namespace_urllib3_client.models import (
     DescribeTableRequest,
     CreateTableRequest,
     DropTableRequest,
+    ListNamespacesRequest,
+    CreateNamespaceRequest,
+    DropNamespaceRequest,
     JsonArrowSchema,
     JsonArrowField,
     JsonArrowDataType,
@@ -134,10 +137,13 @@ class LanceNamespaceDBConnection(DBConnection):
 
     @override
     def table_names(
-        self, page_token: Optional[str] = None, limit: int = 10
+        self,
+        page_token: Optional[str] = None,
+        limit: int = 10,
+        *,
+        namespace: List[str] = [],
     ) -> Iterable[str]:
-        # Use namespace to list tables
+        request = ListTablesRequest(id=namespace, page_token=page_token, limit=limit)
-        request = ListTablesRequest(id=None, page_token=page_token, limit=limit)
         response = self._ns.list_tables(request)
         return response.tables if response.tables else []
 
@@ -153,6 +159,7 @@ class LanceNamespaceDBConnection(DBConnection):
         fill_value: float = 0.0,
         embedding_functions: Optional[List[EmbeddingFunctionConfig]] = None,
         *,
+        namespace: List[str] = [],
         storage_options: Optional[Dict[str, str]] = None,
         data_storage_version: Optional[str] = None,
         enable_v2_manifest_paths: Optional[bool] = None,
@@ -183,8 +190,9 @@ class LanceNamespaceDBConnection(DBConnection):
         # Convert PyArrow schema to JsonArrowSchema
         json_schema = _convert_pyarrow_schema_to_json(schema)
 
-        # Create table request
+        # Create table request with namespace
-        request = CreateTableRequest(id=[name], var_schema=json_schema)
+        table_id = namespace + [name]
+        request = CreateTableRequest(id=table_id, var_schema=json_schema)
 
         # Create empty Arrow IPC stream bytes
         import pyarrow.ipc as ipc
@@ -199,17 +207,21 @@ class LanceNamespaceDBConnection(DBConnection):
         request_data = buffer.getvalue()
 
         self._ns.create_table(request, request_data)
-        return self.open_table(name, storage_options=storage_options)
+        return self.open_table(
+            name, namespace=namespace, storage_options=storage_options
+        )
 
     @override
     def open_table(
         self,
         name: str,
         *,
+        namespace: List[str] = [],
         storage_options: Optional[Dict[str, str]] = None,
         index_cache_size: Optional[int] = None,
     ) -> Table:
-        request = DescribeTableRequest(id=[name])
+        table_id = namespace + [name]
+        request = DescribeTableRequest(id=table_id)
         response = self._ns.describe_table(request)
 
         merged_storage_options = dict()
@@ -225,13 +237,20 @@ class LanceNamespaceDBConnection(DBConnection):
         )
 
     @override
-    def drop_table(self, name: str):
+    def drop_table(self, name: str, namespace: List[str] = []):
         # Use namespace drop_table directly
-        request = DropTableRequest(id=[name])
+        table_id = namespace + [name]
+        request = DropTableRequest(id=table_id)
         self._ns.drop_table(request)
 
     @override
-    def rename_table(self, cur_name: str, new_name: str):
+    def rename_table(
+        self,
+        cur_name: str,
+        new_name: str,
+        cur_namespace: List[str] = [],
+        new_namespace: List[str] = [],
+    ):
         raise NotImplementedError(
             "rename_table is not supported for namespace connections"
         )
@@ -243,9 +262,66 @@ class LanceNamespaceDBConnection(DBConnection):
         )
 
     @override
-    def drop_all_tables(self):
+    def drop_all_tables(self, namespace: List[str] = []):
-        for table_name in self.table_names():
+        for table_name in self.table_names(namespace=namespace):
-            self.drop_table(table_name)
+            self.drop_table(table_name, namespace=namespace)
+
+    @override
+    def list_namespaces(
+        self,
+        namespace: List[str] = [],
+        page_token: Optional[str] = None,
+        limit: int = 10,
+    ) -> Iterable[str]:
+        """
+        List child namespaces under the given namespace.
+
+        Parameters
+        ----------
+        namespace : Optional[List[str]]
+            The parent namespace to list children from.
+            If None, lists root-level namespaces.
+        page_token : Optional[str]
+            Pagination token for listing results.
+        limit : int
+            Maximum number of namespaces to return.
+
+        Returns
+        -------
+        Iterable[str]
+            Names of child namespaces.
+        """
+        request = ListNamespacesRequest(
+            id=namespace, page_token=page_token, limit=limit
+        )
+        response = self._ns.list_namespaces(request)
+        return response.namespaces if response.namespaces else []
+
+    @override
+    def create_namespace(self, namespace: List[str]) -> None:
+        """
+        Create a new namespace.
+
+        Parameters
+        ----------
+        namespace : List[str]
+            The namespace path to create.
+        """
+        request = CreateNamespaceRequest(id=namespace)
+        self._ns.create_namespace(request)
+
+    @override
+    def drop_namespace(self, namespace: List[str]) -> None:
+        """
+        Drop a namespace.
+
+        Parameters
+        ----------
+        namespace : List[str]
+            The namespace path to drop.
+        """
+        request = DropNamespaceRequest(id=namespace)
+        self._ns.drop_namespace(request)
 
     def _lance_table_from_uri(
         self,

python/python/lancedb/query.py

@@ -943,20 +943,22 @@ class LanceQueryBuilder(ABC):
         >>> query = [100, 100]
         >>> plan = table.search(query).analyze_plan()
         >>> print(plan)  # doctest: +ELLIPSIS, +NORMALIZE_WHITESPACE
-        AnalyzeExec verbose=true, metrics=[]
+        AnalyzeExec verbose=true, metrics=[], cumulative_cpu=...
-          TracedExec, metrics=[]
+          TracedExec, metrics=[], cumulative_cpu=...
-            ProjectionExec: expr=[...], metrics=[...]
+            ProjectionExec: expr=[...], metrics=[...], cumulative_cpu=...
-              GlobalLimitExec: skip=0, fetch=10, metrics=[...]
+              GlobalLimitExec: skip=0, fetch=10, metrics=[...], cumulative_cpu=...
                 FilterExec: _distance@2 IS NOT NULL,
-                metrics=[output_rows=..., elapsed_compute=...]
+                metrics=[output_rows=..., elapsed_compute=...], cumulative_cpu=...
                   SortExec: TopK(fetch=10), expr=[...],
                   preserve_partitioning=[...],
-                  metrics=[output_rows=..., elapsed_compute=..., row_replacements=...]
+                  metrics=[output_rows=..., elapsed_compute=..., row_replacements=...],
+                  cumulative_cpu=...
                     KNNVectorDistance: metric=l2,
-                    metrics=[output_rows=..., elapsed_compute=..., output_batches=...]
+                    metrics=[output_rows=..., elapsed_compute=..., output_batches=...],
+                    cumulative_cpu=...
                       LanceRead: uri=..., projection=[vector], ...
                       metrics=[output_rows=..., elapsed_compute=...,
-                      bytes_read=..., iops=..., requests=...]
+                      bytes_read=..., iops=..., requests=...], cumulative_cpu=...
 
         Returns
         -------

python/python/lancedb/remote/__init__.py

@@ -118,6 +118,7 @@ class ClientConfig:
     retry_config: RetryConfig = field(default_factory=RetryConfig)
     timeout_config: Optional[TimeoutConfig] = field(default_factory=TimeoutConfig)
     extra_headers: Optional[dict] = None
+    id_delimiter: Optional[str] = None
 
     def __post_init__(self):
         if isinstance(self.retry_config, dict):

python/python/lancedb/remote/db.py

@@ -96,14 +96,73 @@ class RemoteDBConnection(DBConnection):
     def __repr__(self) -> str:
         return f"RemoteConnect(name={self.db_name})"
 
+    @override
+    def list_namespaces(
+        self,
+        namespace: List[str] = [],
+        page_token: Optional[str] = None,
+        limit: int = 10,
+    ) -> Iterable[str]:
+        """List immediate child namespace names in the given namespace.
+
+        Parameters
+        ----------
+        namespace: List[str], optional
+            The parent namespace to list namespaces in.
+            None or empty list represents root namespace.
+        page_token: str, optional
+            The token to use for pagination. If not present, start from the beginning.
+        limit: int, default 10
+            The size of the page to return.
+
+        Returns
+        -------
+        Iterable of str
+            List of immediate child namespace names
+        """
+        return LOOP.run(
+            self._conn.list_namespaces(
+                namespace=namespace, page_token=page_token, limit=limit
+            )
+        )
+
+    @override
+    def create_namespace(self, namespace: List[str]) -> None:
+        """Create a new namespace.
+
+        Parameters
+        ----------
+        namespace: List[str]
+            The namespace identifier to create.
+        """
+        LOOP.run(self._conn.create_namespace(namespace=namespace))
+
+    @override
+    def drop_namespace(self, namespace: List[str]) -> None:
+        """Drop a namespace.
+
+        Parameters
+        ----------
+        namespace: List[str]
+            The namespace identifier to drop.
+        """
+        return LOOP.run(self._conn.drop_namespace(namespace=namespace))
+
     @override
     def table_names(
-        self, page_token: Optional[str] = None, limit: int = 10
+        self,
+        page_token: Optional[str] = None,
+        limit: int = 10,
+        *,
+        namespace: List[str] = [],
     ) -> Iterable[str]:
         """List the names of all tables in the database.
 
         Parameters
         ----------
+        namespace: List[str], default []
+            The namespace to list tables in.
+            Empty list represents root namespace.
         page_token: str
             The last token to start the new page.
         limit: int, default 10
@@ -113,13 +172,18 @@ class RemoteDBConnection(DBConnection):
         -------
         An iterator of table names.
         """
-        return LOOP.run(self._conn.table_names(start_after=page_token, limit=limit))
+        return LOOP.run(
+            self._conn.table_names(
+                namespace=namespace, start_after=page_token, limit=limit
+            )
+        )
 
     @override
     def open_table(
         self,
         name: str,
         *,
+        namespace: List[str] = [],
         storage_options: Optional[Dict[str, str]] = None,
         index_cache_size: Optional[int] = None,
     ) -> Table:
@@ -129,6 +193,9 @@ class RemoteDBConnection(DBConnection):
         ----------
         name: str
             The name of the table.
+        namespace: List[str], optional
+            The namespace to open the table from.
+            None or empty list represents root namespace.
 
         Returns
         -------
@@ -142,7 +209,7 @@ class RemoteDBConnection(DBConnection):
                 " (there is no local cache to configure)"
             )
 
-        table = LOOP.run(self._conn.open_table(name))
+        table = LOOP.run(self._conn.open_table(name, namespace=namespace))
         return RemoteTable(table, self.db_name)
 
     @override
@@ -155,6 +222,8 @@ class RemoteDBConnection(DBConnection):
         fill_value: float = 0.0,
         mode: Optional[str] = None,
         embedding_functions: Optional[List[EmbeddingFunctionConfig]] = None,
+        *,
+        namespace: List[str] = [],
     ) -> Table:
         """Create a [Table][lancedb.table.Table] in the database.
 
@@ -162,6 +231,9 @@ class RemoteDBConnection(DBConnection):
         ----------
         name: str
             The name of the table.
+        namespace: List[str], optional
+            The namespace to create the table in.
+            None or empty list represents root namespace.
         data: The data to initialize the table, *optional*
             User must provide at least one of `data` or `schema`.
             Acceptable types are:
@@ -262,6 +334,7 @@ class RemoteDBConnection(DBConnection):
             self._conn.create_table(
                 name,
                 data,
+                namespace=namespace,
                 mode=mode,
                 schema=schema,
                 on_bad_vectors=on_bad_vectors,
@@ -271,18 +344,27 @@ class RemoteDBConnection(DBConnection):
         return RemoteTable(table, self.db_name)
 
     @override
-    def drop_table(self, name: str):
+    def drop_table(self, name: str, namespace: List[str] = []):
         """Drop a table from the database.
 
         Parameters
         ----------
         name: str
             The name of the table.
+        namespace: List[str], optional
+            The namespace to drop the table from.
+            None or empty list represents root namespace.
         """
-        LOOP.run(self._conn.drop_table(name))
+        LOOP.run(self._conn.drop_table(name, namespace=namespace))
 
     @override
-    def rename_table(self, cur_name: str, new_name: str):
+    def rename_table(
+        self,
+        cur_name: str,
+        new_name: str,
+        cur_namespace: List[str] = [],
+        new_namespace: List[str] = [],
+    ):
         """Rename a table in the database.
 
         Parameters
@@ -292,7 +374,14 @@ class RemoteDBConnection(DBConnection):
         new_name: str
             The new name of the table.
         """
-        LOOP.run(self._conn.rename_table(cur_name, new_name))
+        LOOP.run(
+            self._conn.rename_table(
+                cur_name,
+                new_name,
+                cur_namespace=cur_namespace,
+                new_namespace=new_namespace,
+            )
+        )
 
     async def close(self):
         """Close the connection to the database."""

python/python/lancedb/remote/table.py

@@ -115,6 +115,7 @@ class RemoteTable(Table):
         *,
         replace: bool = False,
         wait_timeout: timedelta = None,
+        name: Optional[str] = None,
     ):
         """Creates a scalar index
         Parameters
@@ -139,7 +140,11 @@ class RemoteTable(Table):
 
         LOOP.run(
             self._table.create_index(
-                column, config=config, replace=replace, wait_timeout=wait_timeout
+                column,
+                config=config,
+                replace=replace,
+                wait_timeout=wait_timeout,
+                name=name,
             )
         )
 
@@ -161,6 +166,7 @@ class RemoteTable(Table):
         ngram_min_length: int = 3,
         ngram_max_length: int = 3,
         prefix_only: bool = False,
+        name: Optional[str] = None,
     ):
         config = FTS(
             with_position=with_position,
@@ -177,7 +183,11 @@ class RemoteTable(Table):
         )
         LOOP.run(
             self._table.create_index(
-                column, config=config, replace=replace, wait_timeout=wait_timeout
+                column,
+                config=config,
+                replace=replace,
+                wait_timeout=wait_timeout,
+                name=name,
             )
         )
 

python/python/lancedb/table.py

@@ -783,6 +783,7 @@ class Table(ABC):
         replace: bool = True,
         index_type: ScalarIndexType = "BTREE",
         wait_timeout: Optional[timedelta] = None,
+        name: Optional[str] = None,
     ):
         """Create a scalar index on a column.
 
@@ -797,6 +798,8 @@ class Table(ABC):
             The type of index to create.
         wait_timeout: timedelta, optional
             The timeout to wait if indexing is asynchronous.
+        name: str, optional
+            The name of the index. If not provided, a default name will be generated.
         Examples
         --------
 
@@ -859,6 +862,7 @@ class Table(ABC):
         ngram_max_length: int = 3,
         prefix_only: bool = False,
         wait_timeout: Optional[timedelta] = None,
+        name: Optional[str] = None,
     ):
         """Create a full-text search index on the table.
 
@@ -923,6 +927,8 @@ class Table(ABC):
             Whether to only index the prefix of the token for ngram tokenizer.
         wait_timeout: timedelta, optional
             The timeout to wait if indexing is asynchronous.
+        name: str, optional
+            The name of the index. If not provided, a default name will be generated.
         """
         raise NotImplementedError
 
@@ -1113,7 +1119,9 @@ class Table(ABC):
         raise NotImplementedError
 
     @abstractmethod
-    def take_offsets(self, offsets: list[int]) -> LanceTakeQueryBuilder:
+    def take_offsets(
+        self, offsets: list[int], *, with_row_id: bool = False
+    ) -> LanceTakeQueryBuilder:
         """
         Take a list of offsets from the table.
 
@@ -1139,8 +1147,60 @@ class Table(ABC):
             A record batch containing the rows at the given offsets.
         """
 
+    def __getitems__(self, offsets: list[int]) -> pa.RecordBatch:
+        """
+        Take a list of offsets from the table and return as a record batch.
+
+        This method uses the `take_offsets` method to take the rows.  However, it
+        aligns the offsets to the passed in offsets.  This means the return type
+        is a record batch (and so users should take care not to pass in too many
+        offsets)
+
+        Note: this method is primarily intended to fulfill the Dataset contract
+        for pytorch.
+
+        Parameters
+        ----------
+        offsets: list[int]
+            The offsets to take.
+
+        Returns
+        -------
+        pa.RecordBatch
+            A record batch containing the rows at the given offsets.
+        """
+        # We don't know the order of the results at all.  So we calculate a permutation
+        # for ordering the given offsets.  Then we load the data with the _rowoffset
+        # column.  Then we sort by _rowoffset and apply the inverse of the permutation
+        # that we calculated.
+        #
+        # Note: this is potentially a lot of memory copy if we're operating on large
+        # batches :(
+        num_offsets = len(offsets)
+        indices = list(range(num_offsets))
+        permutation = sorted(indices, key=lambda idx: offsets[idx])
+        permutation_inv = [0] * num_offsets
+        for i in range(num_offsets):
+            permutation_inv[permutation[i]] = i
+
+        columns = self.schema.names
+        columns.append("_rowoffset")
+        tbl = (
+            self.take_offsets(offsets)
+            .select(columns)
+            .to_arrow()
+            .sort_by("_rowoffset")
+            .take(permutation_inv)
+            .combine_chunks()
+            .drop_columns(["_rowoffset"])
+        )
+
+        return tbl
+
     @abstractmethod
-    def take_row_ids(self, row_ids: list[int]) -> LanceTakeQueryBuilder:
+    def take_row_ids(
+        self, row_ids: list[int], *, with_row_id: bool = False
+    ) -> LanceTakeQueryBuilder:
         """
         Take a list of row ids from the table.
 
@@ -1646,13 +1706,16 @@ class LanceTable(Table):
         connection: "LanceDBConnection",
         name: str,
         *,
+        namespace: List[str] = [],
         storage_options: Optional[Dict[str, str]] = None,
         index_cache_size: Optional[int] = None,
     ):
         self._conn = connection
+        self._namespace = namespace
         self._table = LOOP.run(
             connection._conn.open_table(
                 name,
+                namespace=namespace,
                 storage_options=storage_options,
                 index_cache_size=index_cache_size,
             )
@@ -1663,8 +1726,8 @@ class LanceTable(Table):
         return self._table.name
 
     @classmethod
-    def open(cls, db, name, **kwargs):
+    def open(cls, db, name, *, namespace: List[str] = [], **kwargs):
-        tbl = cls(db, name, **kwargs)
+        tbl = cls(db, name, namespace=namespace, **kwargs)
 
         # check the dataset exists
         try:
@@ -2048,6 +2111,7 @@ class LanceTable(Table):
         *,
         replace: bool = True,
         index_type: ScalarIndexType = "BTREE",
+        name: Optional[str] = None,
     ):
         if index_type == "BTREE":
             config = BTree()
@@ -2058,7 +2122,7 @@ class LanceTable(Table):
         else:
             raise ValueError(f"Unknown index type {index_type}")
         return LOOP.run(
-            self._table.create_index(column, replace=replace, config=config)
+            self._table.create_index(column, replace=replace, config=config, name=name)
         )
 
     def create_fts_index(
@@ -2082,6 +2146,7 @@ class LanceTable(Table):
         ngram_min_length: int = 3,
         ngram_max_length: int = 3,
         prefix_only: bool = False,
+        name: Optional[str] = None,
     ):
         if not use_tantivy:
             if not isinstance(field_names, str):
@@ -2119,6 +2184,7 @@ class LanceTable(Table):
                     field_names,
                     replace=replace,
                     config=config,
+                    name=name,
                 )
             )
             return
@@ -2485,6 +2551,7 @@ class LanceTable(Table):
         fill_value: float = 0.0,
         embedding_functions: Optional[List[EmbeddingFunctionConfig]] = None,
         *,
+        namespace: List[str] = [],
         storage_options: Optional[Dict[str, str | bool]] = None,
         data_storage_version: Optional[str] = None,
         enable_v2_manifest_paths: Optional[bool] = None,
@@ -2544,6 +2611,7 @@ class LanceTable(Table):
         """
         self = cls.__new__(cls)
         self._conn = db
+        self._namespace = namespace
 
         if data_storage_version is not None:
             warnings.warn(
@@ -2576,6 +2644,7 @@ class LanceTable(Table):
                 on_bad_vectors=on_bad_vectors,
                 fill_value=fill_value,
                 embedding_functions=embedding_functions,
+                namespace=namespace,
                 storage_options=storage_options,
             )
         )

python/python/tests/test_db.py

@@ -175,6 +175,18 @@ def test_table_names(tmp_db: lancedb.DBConnection):
     tmp_db.create_table("test3", data=data)
     assert tmp_db.table_names() == ["test1", "test2", "test3"]
 
+    # Test that positional arguments for page_token and limit
+    result = list(tmp_db.table_names("test1", 1))  # page_token="test1", limit=1
+    assert result == ["test2"], f"Expected ['test2'], got {result}"
+
+    # Test mixed positional and keyword arguments
+    result = list(tmp_db.table_names("test2", limit=2))
+    assert result == ["test3"], f"Expected ['test3'], got {result}"
+
+    # Test that namespace parameter can be passed as keyword
+    result = list(tmp_db.table_names(namespace=[]))
+    assert len(result) == 3
+
 
 @pytest.mark.asyncio
 async def test_table_names_async(tmp_path):
@@ -728,3 +740,93 @@ def test_bypass_vector_index_sync(tmp_db: lancedb.DBConnection):
         table.search(sample_key).bypass_vector_index().explain_plan(verbose=True)
     )
     assert "KNN" in plan_without_index
+
+
+def test_local_namespace_operations(tmp_path):
+    """Test that local mode namespace operations behave as expected."""
+    # Create a local database connection
+    db = lancedb.connect(tmp_path)
+
+    # Test list_namespaces returns empty list
+    namespaces = list(db.list_namespaces())
+    assert namespaces == []
+
+    # Test list_namespaces with parameters still returns empty list
+    namespaces_with_params = list(
+        db.list_namespaces(namespace=["test"], page_token="token", limit=5)
+    )
+    assert namespaces_with_params == []
+
+
+def test_local_create_namespace_not_supported(tmp_path):
+    """Test that create_namespace is not supported in local mode."""
+    db = lancedb.connect(tmp_path)
+
+    with pytest.raises(
+        NotImplementedError,
+        match="Namespace operations are not supported for listing database",
+    ):
+        db.create_namespace(["test_namespace"])
+
+
+def test_local_drop_namespace_not_supported(tmp_path):
+    """Test that drop_namespace is not supported in local mode."""
+    db = lancedb.connect(tmp_path)
+
+    with pytest.raises(
+        NotImplementedError,
+        match="Namespace operations are not supported for listing database",
+    ):
+        db.drop_namespace(["test_namespace"])
+
+
+def test_local_table_operations_with_namespace_raise_error(tmp_path):
+    """
+    Test that table operations with namespace parameter
+    raise ValueError in local mode.
+    """
+    db = lancedb.connect(tmp_path)
+
+    # Create some test data
+    data = [{"vector": [1.0, 2.0], "item": "test"}]
+    schema = pa.schema(
+        [pa.field("vector", pa.list_(pa.float32(), 2)), pa.field("item", pa.string())]
+    )
+
+    # Test create_table with namespace - should raise ValueError
+    with pytest.raises(
+        NotImplementedError,
+        match="Namespace parameter is not supported for listing database",
+    ):
+        db.create_table(
+            "test_table_with_ns", data=data, schema=schema, namespace=["test_ns"]
+        )
+
+    # Create table normally for other tests
+    db.create_table("test_table", data=data, schema=schema)
+    assert "test_table" in db.table_names()
+
+    # Test open_table with namespace - should raise ValueError
+    with pytest.raises(
+        NotImplementedError,
+        match="Namespace parameter is not supported for listing database",
+    ):
+        db.open_table("test_table", namespace=["test_ns"])
+
+    # Test table_names with namespace - should raise ValueError
+    with pytest.raises(
+        NotImplementedError,
+        match="Namespace parameter is not supported for listing database",
+    ):
+        list(db.table_names(namespace=["test_ns"]))
+
+    # Test drop_table with namespace - should raise ValueError
+    with pytest.raises(
+        NotImplementedError,
+        match="Namespace parameter is not supported for listing database",
+    ):
+        db.drop_table("test_table", namespace=["test_ns"])
+
+    # Test table_names without namespace - should work normally
+    tables_root = list(db.table_names())
+    assert "test_table" in tables_root

python/python/tests/test_fts.py

@@ -157,7 +157,16 @@ def test_create_index_with_stemming(tmp_path, table):
 def test_create_inverted_index(table, use_tantivy, with_position):
     if use_tantivy and not with_position:
         pytest.skip("we don't support building a tantivy index without position")
-    table.create_fts_index("text", use_tantivy=use_tantivy, with_position=with_position)
+    table.create_fts_index(
+        "text",
+        use_tantivy=use_tantivy,
+        with_position=with_position,
+        name="custom_fts_index",
+    )
+    if not use_tantivy:
+        indices = table.list_indices()
+        fts_indices = [i for i in indices if i.index_type == "FTS"]
+        assert any(i.name == "custom_fts_index" for i in fts_indices)
 
 
 def test_populate_index(tmp_path, table):

python/python/tests/test_namespace.py

@@ -23,6 +23,12 @@ from lance_namespace_urllib3_client.models import (
     CreateTableResponse,
     DropTableRequest,
     DropTableResponse,
+    ListNamespacesRequest,
+    ListNamespacesResponse,
+    CreateNamespaceRequest,
+    CreateNamespaceResponse,
+    DropNamespaceRequest,
+    DropNamespaceResponse,
 )
 
 
@@ -31,6 +37,8 @@ class TempNamespace(LanceNamespace):
 
     # Class-level storage to persist table registry across instances
     _global_registry: Dict[str, Dict[str, str]] = {}
+    # Class-level storage for namespaces (supporting 1-level namespace)
+    _global_namespaces: Dict[str, set] = {}
 
     def __init__(self, **properties):
         """Initialize the test namespace.
@@ -44,20 +52,48 @@ class TempNamespace(LanceNamespace):
         root = self.config.root
         if root not in self._global_registry:
             self._global_registry[root] = {}
+        if root not in self._global_namespaces:
+            self._global_namespaces[root] = set()
         self.tables = self._global_registry[root]  # Reference to shared registry
+        self.namespaces = self._global_namespaces[
+            root
+        ]  # Reference to shared namespaces
 
     def list_tables(self, request: ListTablesRequest) -> ListTablesResponse:
         """List all tables in the namespace."""
-        # For simplicity, ignore namespace ID validation
+        if not request.id:
-        tables = list(self.tables.keys())
+            # List all tables in root namespace
+            tables = [name for name in self.tables.keys() if "." not in name]
+        else:
+            # List tables in specific namespace (1-level only)
+            if len(request.id) == 1:
+                namespace_name = request.id[0]
+                prefix = f"{namespace_name}."
+                tables = [
+                    name[len(prefix) :]
+                    for name in self.tables.keys()
+                    if name.startswith(prefix)
+                ]
+            else:
+                # Multi-level namespaces not supported
+                raise ValueError("Only 1-level namespaces are supported")
         return ListTablesResponse(tables=tables)
 
     def describe_table(self, request: DescribeTableRequest) -> DescribeTableResponse:
         """Describe a table by returning its location."""
-        if not request.id or len(request.id) != 1:
+        if not request.id:
             raise ValueError("Invalid table ID")
 
+        if len(request.id) == 1:
+            # Root namespace table
             table_name = request.id[0]
+        elif len(request.id) == 2:
+            # Namespaced table (1-level namespace)
+            namespace_name, table_name = request.id
+            table_name = f"{namespace_name}.{table_name}"
+        else:
+            raise ValueError("Only 1-level namespaces are supported")
+
         if table_name not in self.tables:
             raise RuntimeError(f"Table does not exist: {table_name}")
 
@@ -68,10 +104,22 @@ class TempNamespace(LanceNamespace):
         self, request: CreateTableRequest, request_data: bytes
     ) -> CreateTableResponse:
         """Create a table in the namespace."""
-        if not request.id or len(request.id) != 1:
+        if not request.id:
             raise ValueError("Invalid table ID")
 
+        if len(request.id) == 1:
+            # Root namespace table
             table_name = request.id[0]
+            table_uri = f"{self.config.root}/{table_name}.lance"
+        elif len(request.id) == 2:
+            # Namespaced table (1-level namespace)
+            namespace_name, base_table_name = request.id
+            # Add namespace to our namespace set
+            self.namespaces.add(namespace_name)
+            table_name = f"{namespace_name}.{base_table_name}"
+            table_uri = f"{self.config.root}/{namespace_name}/{base_table_name}.lance"
+        else:
+            raise ValueError("Only 1-level namespaces are supported")
 
         # Check if table already exists
         if table_name in self.tables:
@@ -81,13 +129,14 @@ class TempNamespace(LanceNamespace):
             else:
                 raise RuntimeError(f"Table already exists: {table_name}")
 
-        # Generate table URI based on root directory
-        table_uri = f"{self.config.root}/{table_name}.lance"
-
         # Parse the Arrow IPC stream to get the schema and create the actual table
         import pyarrow.ipc as ipc
         import io
         import lance
+        import os
+
+        # Create directory if needed for namespaced tables
+        os.makedirs(os.path.dirname(table_uri), exist_ok=True)
 
         # Read the IPC stream
         reader = ipc.open_stream(io.BytesIO(request_data))
@@ -103,10 +152,19 @@ class TempNamespace(LanceNamespace):
 
     def drop_table(self, request: DropTableRequest) -> DropTableResponse:
         """Drop a table from the namespace."""
-        if not request.id or len(request.id) != 1:
+        if not request.id:
             raise ValueError("Invalid table ID")
 
+        if len(request.id) == 1:
+            # Root namespace table
             table_name = request.id[0]
+        elif len(request.id) == 2:
+            # Namespaced table (1-level namespace)
+            namespace_name, base_table_name = request.id
+            table_name = f"{namespace_name}.{base_table_name}"
+        else:
+            raise ValueError("Only 1-level namespaces are supported")
+
         if table_name not in self.tables:
             raise RuntimeError(f"Table does not exist: {table_name}")
 
@@ -152,6 +210,78 @@ class TempNamespace(LanceNamespace):
         del self.tables[table_name]
         return DeregisterTableResponse()
 
+    def list_namespaces(self, request: ListNamespacesRequest) -> ListNamespacesResponse:
+        """List child namespaces."""
+        if not request.id:
+            # List root-level namespaces
+            namespaces = list(self.namespaces)
+        elif len(request.id) == 1:
+            # For 1-level namespace, there are no child namespaces
+            namespaces = []
+        else:
+            raise ValueError("Only 1-level namespaces are supported")
+
+        return ListNamespacesResponse(namespaces=namespaces)
+
+    def create_namespace(
+        self, request: CreateNamespaceRequest
+    ) -> CreateNamespaceResponse:
+        """Create a namespace."""
+        if not request.id:
+            raise ValueError("Invalid namespace ID")
+
+        if len(request.id) == 1:
+            # Create 1-level namespace
+            namespace_name = request.id[0]
+            self.namespaces.add(namespace_name)
+
+            # Create directory for the namespace
+            import os
+
+            namespace_dir = f"{self.config.root}/{namespace_name}"
+            os.makedirs(namespace_dir, exist_ok=True)
+        else:
+            raise ValueError("Only 1-level namespaces are supported")
+
+        return CreateNamespaceResponse()
+
+    def drop_namespace(self, request: DropNamespaceRequest) -> DropNamespaceResponse:
+        """Drop a namespace."""
+        if not request.id:
+            raise ValueError("Invalid namespace ID")
+
+        if len(request.id) == 1:
+            # Drop 1-level namespace
+            namespace_name = request.id[0]
+
+            if namespace_name not in self.namespaces:
+                raise RuntimeError(f"Namespace does not exist: {namespace_name}")
+
+            # Check if namespace has any tables
+            prefix = f"{namespace_name}."
+            tables_in_namespace = [
+                name for name in self.tables.keys() if name.startswith(prefix)
+            ]
+            if tables_in_namespace:
+                raise RuntimeError(
+                    f"Cannot drop namespace '{namespace_name}': contains tables"
+                )
+
+            # Remove namespace
+            self.namespaces.remove(namespace_name)
+
+            # Remove directory
+            import shutil
+            import os
+
+            namespace_dir = f"{self.config.root}/{namespace_name}"
+            if os.path.exists(namespace_dir):
+                shutil.rmtree(namespace_dir, ignore_errors=True)
+        else:
+            raise ValueError("Only 1-level namespaces are supported")
+
+        return DropNamespaceResponse()
+
 
 class TempNamespaceConfig:
     """Configuration for TestNamespace."""
@@ -187,12 +317,16 @@ class TestNamespaceConnection:
         # Clear the TestNamespace registry for this test
         if self.temp_dir in TempNamespace._global_registry:
             TempNamespace._global_registry[self.temp_dir].clear()
+        if self.temp_dir in TempNamespace._global_namespaces:
+            TempNamespace._global_namespaces[self.temp_dir].clear()
 
     def teardown_method(self):
         """Clean up test fixtures."""
         # Clear the TestNamespace registry
         if self.temp_dir in TempNamespace._global_registry:
             del TempNamespace._global_registry[self.temp_dir]
+        if self.temp_dir in TempNamespace._global_namespaces:
+            del TempNamespace._global_namespaces[self.temp_dir]
         shutil.rmtree(self.temp_dir, ignore_errors=True)
 
     def test_connect_namespace_test(self):
@@ -286,6 +420,10 @@ class TestNamespaceConnection:
         assert "table2" in table_names
         assert len(table_names) == 1
 
+        # Test that drop_table works without explicit namespace parameter
+        db.drop_table("table2")
+        assert len(list(db.table_names())) == 0
+
         # Should not be able to open dropped table
         with pytest.raises(RuntimeError):
             db.open_table("table1")
@@ -353,6 +491,11 @@ class TestNamespaceConnection:
         # Verify all tables are gone
         assert len(list(db.table_names())) == 0
 
+        # Test that table_names works with keyword-only namespace parameter
+        db.create_table("test_table", schema=schema)
+        result = list(db.table_names(namespace=[]))
+        assert "test_table" in result
+
     def test_table_operations(self):
         """Test various table operations through namespace."""
         db = lancedb.connect_namespace("temp", {"root": self.temp_dir})
@@ -412,3 +555,153 @@ class TestNamespaceConnection:
             ]
         )
         db.create_table("test_table", schema=schema, storage_options=table_opts)
+
+    def test_namespace_operations(self):
+        """Test namespace management operations."""
+        db = lancedb.connect_namespace("temp", {"root": self.temp_dir})
+
+        # Initially no namespaces
+        assert len(list(db.list_namespaces())) == 0
+
+        # Create a namespace
+        db.create_namespace(["test_namespace"])
+
+        # Verify namespace exists
+        namespaces = list(db.list_namespaces())
+        assert "test_namespace" in namespaces
+        assert len(namespaces) == 1
+
+        # Create table in namespace
+        schema = pa.schema(
+            [
+                pa.field("id", pa.int64()),
+                pa.field("vector", pa.list_(pa.float32(), 2)),
+            ]
+        )
+        table = db.create_table(
+            "test_table", schema=schema, namespace=["test_namespace"]
+        )
+        assert table is not None
+
+        # Verify table exists in namespace
+        tables_in_namespace = list(db.table_names(namespace=["test_namespace"]))
+        assert "test_table" in tables_in_namespace
+        assert len(tables_in_namespace) == 1
+
+        # Open table from namespace
+        table = db.open_table("test_table", namespace=["test_namespace"])
+        assert table is not None
+        assert table.name == "test_table"
+
+        # Drop table from namespace
+        db.drop_table("test_table", namespace=["test_namespace"])
+
+        # Verify table no longer exists in namespace
+        tables_in_namespace = list(db.table_names(namespace=["test_namespace"]))
+        assert len(tables_in_namespace) == 0
+
+        # Drop namespace
+        db.drop_namespace(["test_namespace"])
+
+        # Verify namespace no longer exists
+        namespaces = list(db.list_namespaces())
+        assert len(namespaces) == 0
+
+    def test_namespace_with_tables_cannot_be_dropped(self):
+        """Test that namespaces containing tables cannot be dropped."""
+        db = lancedb.connect_namespace("temp", {"root": self.temp_dir})
+
+        # Create namespace and table
+        db.create_namespace(["test_namespace"])
+        schema = pa.schema(
+            [
+                pa.field("id", pa.int64()),
+                pa.field("vector", pa.list_(pa.float32(), 2)),
+            ]
+        )
+        db.create_table("test_table", schema=schema, namespace=["test_namespace"])
+
+        # Try to drop namespace with tables - should fail
+        with pytest.raises(RuntimeError, match="contains tables"):
+            db.drop_namespace(["test_namespace"])
+
+        # Drop table first
+        db.drop_table("test_table", namespace=["test_namespace"])
+
+        # Now dropping namespace should work
+        db.drop_namespace(["test_namespace"])
+
+    def test_same_table_name_different_namespaces(self):
+        db = lancedb.connect_namespace("temp", {"root": self.temp_dir})
+
+        # Create two namespaces
+        db.create_namespace(["namespace_a"])
+        db.create_namespace(["namespace_b"])
+
+        # Define schema
+        schema = pa.schema(
+            [
+                pa.field("id", pa.int64()),
+                pa.field("vector", pa.list_(pa.float32(), 2)),
+                pa.field("text", pa.string()),
+            ]
+        )
+
+        # Create table with same name in both namespaces
+        table_a = db.create_table(
+            "same_name_table", schema=schema, namespace=["namespace_a"]
+        )
+        table_b = db.create_table(
+            "same_name_table", schema=schema, namespace=["namespace_b"]
+        )
+
+        # Add different data to each table
+        data_a = [
+            {"id": 1, "vector": [1.0, 2.0], "text": "data_from_namespace_a"},
+            {"id": 2, "vector": [3.0, 4.0], "text": "also_from_namespace_a"},
+        ]
+        table_a.add(data_a)
+
+        data_b = [
+            {"id": 10, "vector": [10.0, 20.0], "text": "data_from_namespace_b"},
+            {"id": 20, "vector": [30.0, 40.0], "text": "also_from_namespace_b"},
+            {"id": 30, "vector": [50.0, 60.0], "text": "more_from_namespace_b"},
+        ]
+        table_b.add(data_b)
+
+        # Verify data in namespace_a table
+        opened_table_a = db.open_table("same_name_table", namespace=["namespace_a"])
+        result_a = opened_table_a.to_pandas().sort_values("id").reset_index(drop=True)
+        assert len(result_a) == 2
+        assert result_a["id"].tolist() == [1, 2]
+        assert result_a["text"].tolist() == [
+            "data_from_namespace_a",
+            "also_from_namespace_a",
+        ]
+        assert [v.tolist() for v in result_a["vector"]] == [[1.0, 2.0], [3.0, 4.0]]
+
+        # Verify data in namespace_b table
+        opened_table_b = db.open_table("same_name_table", namespace=["namespace_b"])
+        result_b = opened_table_b.to_pandas().sort_values("id").reset_index(drop=True)
+        assert len(result_b) == 3
+        assert result_b["id"].tolist() == [10, 20, 30]
+        assert result_b["text"].tolist() == [
+            "data_from_namespace_b",
+            "also_from_namespace_b",
+            "more_from_namespace_b",
+        ]
+        assert [v.tolist() for v in result_b["vector"]] == [
+            [10.0, 20.0],
+            [30.0, 40.0],
+            [50.0, 60.0],
+        ]
+
+        # Verify root namespace doesn't have this table
+        root_tables = list(db.table_names())
+        assert "same_name_table" not in root_tables
+
+        # Clean up
+        db.drop_table("same_name_table", namespace=["namespace_a"])
+        db.drop_table("same_name_table", namespace=["namespace_b"])
+        db.drop_namespace(["namespace_a"])
+        db.drop_namespace(["namespace_b"])

python/python/tests/test_query.py

@@ -5,6 +5,7 @@ from typing import List, Union
 import unittest.mock as mock
 from datetime import timedelta
 from pathlib import Path
+import random
 
 import lancedb
 from lancedb.db import AsyncConnection
@@ -1355,6 +1356,27 @@ def test_take_queries(tmp_path):
     ]
 
 
+def test_getitems(tmp_path):
+    db = lancedb.connect(tmp_path)
+    data = pa.table(
+        {
+            "idx": range(100),
+        }
+    )
+    # Make two fragments
+    table = db.create_table("test", data)
+    table.add(pa.table({"idx": range(100, 200)}))
+
+    assert table.__getitems__([5, 2, 117]) == pa.table(
+        {
+            "idx": [5, 2, 117],
+        }
+    )
+
+    offsets = random.sample(range(200), 10)
+    assert table.__getitems__(offsets) == pa.table({"idx": offsets})
+
+
 @pytest.mark.asyncio
 async def test_query_timeout_async(tmp_path):
     db = await lancedb.connect_async(tmp_path)

python/python/tests/test_remote_db.py

@@ -271,12 +271,21 @@ def test_table_add_in_threadpool():
 
 
 def test_table_create_indices():
+    # Track received index creation requests to validate name parameter
+    received_requests = []
+
     def handler(request):
         index_stats = dict(
             index_type="IVF_PQ", num_indexed_rows=1000, num_unindexed_rows=0
         )
 
         if request.path == "/v1/table/test/create_index/":
+            # Capture the request body to validate name parameter
+            content_len = int(request.headers.get("Content-Length", 0))
+            if content_len > 0:
+                body = request.rfile.read(content_len)
+                body_data = json.loads(body)
+                received_requests.append(body_data)
             request.send_response(200)
             request.end_headers()
         elif request.path == "/v1/table/test/create/?mode=create":
@@ -307,34 +316,34 @@ def test_table_create_indices():
                 dict(
                     indexes=[
                         {
-                            "index_name": "id_idx",
+                            "index_name": "custom_scalar_idx",
                             "columns": ["id"],
                         },
                         {
-                            "index_name": "text_idx",
+                            "index_name": "custom_fts_idx",
                             "columns": ["text"],
                         },
                         {
-                            "index_name": "vector_idx",
+                            "index_name": "custom_vector_idx",
                             "columns": ["vector"],
                         },
                     ]
                 )
             )
             request.wfile.write(payload.encode())
-        elif request.path == "/v1/table/test/index/id_idx/stats/":
+        elif request.path == "/v1/table/test/index/custom_scalar_idx/stats/":
             request.send_response(200)
             request.send_header("Content-Type", "application/json")
             request.end_headers()
             payload = json.dumps(index_stats)
             request.wfile.write(payload.encode())
-        elif request.path == "/v1/table/test/index/text_idx/stats/":
+        elif request.path == "/v1/table/test/index/custom_fts_idx/stats/":
             request.send_response(200)
             request.send_header("Content-Type", "application/json")
             request.end_headers()
             payload = json.dumps(index_stats)
             request.wfile.write(payload.encode())
-        elif request.path == "/v1/table/test/index/vector_idx/stats/":
+        elif request.path == "/v1/table/test/index/custom_vector_idx/stats/":
             request.send_response(200)
             request.send_header("Content-Type", "application/json")
             request.end_headers()
@@ -351,16 +360,49 @@ def test_table_create_indices():
         # Parameters are well-tested through local and async tests.
         # This is a smoke-test.
         table = db.create_table("test", [{"id": 1}])
-        table.create_scalar_index("id", wait_timeout=timedelta(seconds=2))
+
-        table.create_fts_index("text", wait_timeout=timedelta(seconds=2))
+        # Test create_scalar_index with custom name
-        table.create_index(
+        table.create_scalar_index(
-            vector_column_name="vector", wait_timeout=timedelta(seconds=10)
+            "id", wait_timeout=timedelta(seconds=2), name="custom_scalar_idx"
         )
-        table.wait_for_index(["id_idx"], timedelta(seconds=2))
+
-        table.wait_for_index(["text_idx", "vector_idx"], timedelta(seconds=2))
+        # Test create_fts_index with custom name
-        table.drop_index("vector_idx")
+        table.create_fts_index(
-        table.drop_index("id_idx")
+            "text", wait_timeout=timedelta(seconds=2), name="custom_fts_idx"
-        table.drop_index("text_idx")
+        )
+
+        # Test create_index with custom name
+        table.create_index(
+            vector_column_name="vector",
+            wait_timeout=timedelta(seconds=10),
+            name="custom_vector_idx",
+        )
+
+        # Validate that the name parameter was passed correctly in requests
+        assert len(received_requests) == 3
+
+        # Check scalar index request has custom name
+        scalar_req = received_requests[0]
+        assert "name" in scalar_req
+        assert scalar_req["name"] == "custom_scalar_idx"
+
+        # Check FTS index request has custom name
+        fts_req = received_requests[1]
+        assert "name" in fts_req
+        assert fts_req["name"] == "custom_fts_idx"
+
+        # Check vector index request has custom name
+        vector_req = received_requests[2]
+        assert "name" in vector_req
+        assert vector_req["name"] == "custom_vector_idx"
+
+        table.wait_for_index(["custom_scalar_idx"], timedelta(seconds=2))
+        table.wait_for_index(
+            ["custom_fts_idx", "custom_vector_idx"], timedelta(seconds=2)
+        )
+        table.drop_index("custom_vector_idx")
+        table.drop_index("custom_scalar_idx")
+        table.drop_index("custom_fts_idx")
 
 
 def test_table_wait_for_index_timeout():

python/python/tests/test_table.py

@@ -1274,11 +1274,13 @@ def test_create_scalar_index(mem_db: DBConnection):
         "my_table",
         data=test_data,
     )
+    # Test with default name
     table.create_scalar_index("x")
     indices = table.list_indices()
     assert len(indices) == 1
     scalar_index = indices[0]
     assert scalar_index.index_type == "BTree"
+    assert scalar_index.name == "x_idx"  # Default name
 
     # Confirm that prefiltering still works with the scalar index column
     results = table.search().where("x = 'c'").to_arrow()
@@ -1292,6 +1294,14 @@ def test_create_scalar_index(mem_db: DBConnection):
     indices = table.list_indices()
     assert len(indices) == 0
 
+    # Test with custom name
+    table.create_scalar_index("y", name="custom_y_index")
+    indices = table.list_indices()
+    assert len(indices) == 1
+    scalar_index = indices[0]
+    assert scalar_index.index_type == "BTree"
+    assert scalar_index.name == "custom_y_index"
+
 
 def test_empty_query(mem_db: DBConnection):
     table = mem_db.create_table(

python/python/tests/test_torch.py

@@ -0,0 +1,26 @@
+# SPDX-License-Identifier: Apache-2.0
+# SPDX-FileCopyrightText: Copyright The LanceDB Authors
+
+import pyarrow as pa
+import pytest
+
+torch = pytest.importorskip("torch")
+
+
+def tbl_to_tensor(tbl):
+    def to_tensor(col: pa.ChunkedArray):
+        if col.num_chunks > 1:
+            raise Exception("Single batch was too large to fit into a one-chunk table")
+        return torch.from_dlpack(col.chunk(0))
+
+    return torch.stack([to_tensor(tbl.column(i)) for i in range(tbl.num_columns)])
+
+
+def test_table_dataloader(mem_db):
+    table = mem_db.create_table("test_table", pa.table({"a": range(1000)}))
+    dataloader = torch.utils.data.DataLoader(
+        table, collate_fn=tbl_to_tensor, batch_size=10, shuffle=True
+    )
+    for batch in dataloader:
+        assert batch.size(0) == 1
+        assert batch.size(1) == 10

python/src/connection.rs

@@ -63,14 +63,16 @@ impl Connection {
         self.get_inner().map(|inner| inner.uri().to_string())
     }
 
-    #[pyo3(signature = (start_after=None, limit=None))]
+    #[pyo3(signature = (namespace=vec![], start_after=None, limit=None))]
     pub fn table_names(
         self_: PyRef<'_, Self>,
+        namespace: Vec<String>,
         start_after: Option<String>,
         limit: Option<u32>,
     ) -> PyResult<Bound<'_, PyAny>> {
         let inner = self_.get_inner()?.clone();
         let mut op = inner.table_names();
+        op = op.namespace(namespace);
         if let Some(start_after) = start_after {
             op = op.start_after(start_after);
         }
@@ -80,12 +82,13 @@ impl Connection {
         future_into_py(self_.py(), async move { op.execute().await.infer_error() })
     }
 
-    #[pyo3(signature = (name, mode, data, storage_options=None))]
+    #[pyo3(signature = (name, mode, data, namespace=vec![], storage_options=None))]
     pub fn create_table<'a>(
         self_: PyRef<'a, Self>,
         name: String,
         mode: &str,
         data: Bound<'_, PyAny>,
+        namespace: Vec<String>,
         storage_options: Option<HashMap<String, String>>,
     ) -> PyResult<Bound<'a, PyAny>> {
         let inner = self_.get_inner()?.clone();
@@ -93,8 +96,10 @@ impl Connection {
         let mode = Self::parse_create_mode_str(mode)?;
 
         let batches = ArrowArrayStreamReader::from_pyarrow_bound(&data)?;
+
         let mut builder = inner.create_table(name, batches).mode(mode);
 
+        builder = builder.namespace(namespace);
         if let Some(storage_options) = storage_options {
             builder = builder.storage_options(storage_options);
         }
@@ -105,12 +110,13 @@ impl Connection {
         })
     }
 
-    #[pyo3(signature = (name, mode, schema, storage_options=None))]
+    #[pyo3(signature = (name, mode, schema, namespace=vec![], storage_options=None))]
     pub fn create_empty_table<'a>(
         self_: PyRef<'a, Self>,
         name: String,
         mode: &str,
         schema: Bound<'_, PyAny>,
+        namespace: Vec<String>,
         storage_options: Option<HashMap<String, String>>,
     ) -> PyResult<Bound<'a, PyAny>> {
         let inner = self_.get_inner()?.clone();
@@ -121,6 +127,7 @@ impl Connection {
 
         let mut builder = inner.create_empty_table(name, Arc::new(schema)).mode(mode);
 
+        builder = builder.namespace(namespace);
         if let Some(storage_options) = storage_options {
             builder = builder.storage_options(storage_options);
         }
@@ -131,49 +138,115 @@ impl Connection {
         })
     }
 
-    #[pyo3(signature = (name, storage_options = None, index_cache_size = None))]
+    #[pyo3(signature = (name, namespace=vec![], storage_options = None, index_cache_size = None))]
     pub fn open_table(
         self_: PyRef<'_, Self>,
         name: String,
+        namespace: Vec<String>,
         storage_options: Option<HashMap<String, String>>,
         index_cache_size: Option<u32>,
     ) -> PyResult<Bound<'_, PyAny>> {
         let inner = self_.get_inner()?.clone();
+
         let mut builder = inner.open_table(name);
+        builder = builder.namespace(namespace);
         if let Some(storage_options) = storage_options {
             builder = builder.storage_options(storage_options);
         }
         if let Some(index_cache_size) = index_cache_size {
             builder = builder.index_cache_size(index_cache_size);
         }
+
         future_into_py(self_.py(), async move {
             let table = builder.execute().await.infer_error()?;
             Ok(Table::new(table))
         })
     }
 
+    #[pyo3(signature = (cur_name, new_name, cur_namespace=vec![], new_namespace=vec![]))]
     pub fn rename_table(
         self_: PyRef<'_, Self>,
-        old_name: String,
+        cur_name: String,
         new_name: String,
+        cur_namespace: Vec<String>,
+        new_namespace: Vec<String>,
     ) -> PyResult<Bound<'_, PyAny>> {
         let inner = self_.get_inner()?.clone();
         future_into_py(self_.py(), async move {
-            inner.rename_table(old_name, new_name).await.infer_error()
+            inner
+                .rename_table(cur_name, new_name, &cur_namespace, &new_namespace)
+                .await
+                .infer_error()
         })
     }
 
-    pub fn drop_table(self_: PyRef<'_, Self>, name: String) -> PyResult<Bound<'_, PyAny>> {
+    #[pyo3(signature = (name, namespace=vec![]))]
+    pub fn drop_table(
+        self_: PyRef<'_, Self>,
+        name: String,
+        namespace: Vec<String>,
+    ) -> PyResult<Bound<'_, PyAny>> {
         let inner = self_.get_inner()?.clone();
         future_into_py(self_.py(), async move {
-            inner.drop_table(name).await.infer_error()
+            inner.drop_table(name, &namespace).await.infer_error()
         })
     }
 
-    pub fn drop_all_tables(self_: PyRef<'_, Self>) -> PyResult<Bound<'_, PyAny>> {
+    #[pyo3(signature = (namespace=vec![],))]
+    pub fn drop_all_tables(
+        self_: PyRef<'_, Self>,
+        namespace: Vec<String>,
+    ) -> PyResult<Bound<'_, PyAny>> {
         let inner = self_.get_inner()?.clone();
         future_into_py(self_.py(), async move {
-            inner.drop_all_tables().await.infer_error()
+            inner.drop_all_tables(&namespace).await.infer_error()
+        })
+    }
+
+    // Namespace management methods
+
+    #[pyo3(signature = (namespace=vec![], page_token=None, limit=None))]
+    pub fn list_namespaces(
+        self_: PyRef<'_, Self>,
+        namespace: Vec<String>,
+        page_token: Option<String>,
+        limit: Option<u32>,
+    ) -> PyResult<Bound<'_, PyAny>> {
+        let inner = self_.get_inner()?.clone();
+        future_into_py(self_.py(), async move {
+            use lancedb::database::ListNamespacesRequest;
+            let request = ListNamespacesRequest {
+                namespace,
+                page_token,
+                limit,
+            };
+            inner.list_namespaces(request).await.infer_error()
+        })
+    }
+
+    #[pyo3(signature = (namespace,))]
+    pub fn create_namespace(
+        self_: PyRef<'_, Self>,
+        namespace: Vec<String>,
+    ) -> PyResult<Bound<'_, PyAny>> {
+        let inner = self_.get_inner()?.clone();
+        future_into_py(self_.py(), async move {
+            use lancedb::database::CreateNamespaceRequest;
+            let request = CreateNamespaceRequest { namespace };
+            inner.create_namespace(request).await.infer_error()
+        })
+    }
+
+    #[pyo3(signature = (namespace,))]
+    pub fn drop_namespace(
+        self_: PyRef<'_, Self>,
+        namespace: Vec<String>,
+    ) -> PyResult<Bound<'_, PyAny>> {
+        let inner = self_.get_inner()?.clone();
+        future_into_py(self_.py(), async move {
+            use lancedb::database::DropNamespaceRequest;
+            let request = DropNamespaceRequest { namespace };
+            inner.drop_namespace(request).await.infer_error()
         })
     }
 }
@@ -227,6 +300,7 @@ pub struct PyClientConfig {
     retry_config: Option<PyClientRetryConfig>,
     timeout_config: Option<PyClientTimeoutConfig>,
     extra_headers: Option<HashMap<String, String>>,
+    id_delimiter: Option<String>,
 }
 
 #[derive(FromPyObject)]
@@ -281,6 +355,7 @@ impl From<PyClientConfig> for lancedb::remote::ClientConfig {
             retry_config: value.retry_config.map(Into::into).unwrap_or_default(),
             timeout_config: value.timeout_config.map(Into::into).unwrap_or_default(),
             extra_headers: value.extra_headers.unwrap_or_default(),
+            id_delimiter: value.id_delimiter,
         }
     }
 }

rust/lancedb/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "lancedb"
-version = "0.21.4-beta.0"
+version = "0.22.0-beta.1"
 edition.workspace = true
 description = "LanceDB: A serverless, low-latency vector database for AI applications"
 license.workspace = true

rust/lancedb/examples/hybrid_search.rs

@@ -62,12 +62,10 @@ async fn main() -> Result<()> {
             .as_any()
             .downcast_ref::<StringArray>()
             .unwrap();
-        for text in out.iter() {
+        for text in out.iter().flatten() {
-            if let Some(text) = text {
             println!("Result: {}", text);
         }
     }
-    }
 
     Ok(())
 }

rust/lancedb/examples/simple.rs

@@ -43,7 +43,7 @@ async fn main() -> Result<()> {
     // --8<-- [end:delete]
 
     // --8<-- [start:drop_table]
-    db.drop_table("my_table").await.unwrap();
+    db.drop_table("my_table", &[]).await.unwrap();
     // --8<-- [end:drop_table]
     Ok(())
 }

rust/lancedb/src/catalog/listing.rs

@@ -379,6 +379,7 @@ mod tests {
             data: CreateTableData::Empty(TableDefinition::new_from_schema(dummy_schema)),
             mode: Default::default(),
             write_options: Default::default(),
+            namespace: vec![],
         })
         .await
         .unwrap();
@@ -414,6 +415,7 @@ mod tests {
             data: CreateTableData::Empty(TableDefinition::new_from_schema(dummy_schema)),
             mode: Default::default(),
             write_options: Default::default(),
+            namespace: vec![],
         })
         .await
         .unwrap();

rust/lancedb/src/connection.rs

@@ -19,8 +19,9 @@ use crate::database::listing::{
     ListingDatabase, OPT_NEW_TABLE_STORAGE_VERSION, OPT_NEW_TABLE_V2_MANIFEST_PATHS,
 };
 use crate::database::{
-    CreateTableData, CreateTableMode, CreateTableRequest, Database, DatabaseOptions,
+    CreateNamespaceRequest, CreateTableData, CreateTableMode, CreateTableRequest, Database,
-    OpenTableRequest, TableNamesRequest,
+    DatabaseOptions, DropNamespaceRequest, ListNamespacesRequest, OpenTableRequest,
+    TableNamesRequest,
 };
 use crate::embeddings::{
     EmbeddingDefinition, EmbeddingFunction, EmbeddingRegistry, MemoryRegistry, WithEmbeddings,
@@ -67,6 +68,12 @@ impl TableNamesBuilder {
         self
     }
 
+    /// Set the namespace to list tables from
+    pub fn namespace(mut self, namespace: Vec<String>) -> Self {
+        self.request.namespace = namespace;
+        self
+    }
+
     /// Execute the table names operation
     pub async fn execute(self) -> Result<Vec<String>> {
         self.parent.clone().table_names(self.request).await
@@ -348,6 +355,12 @@ impl<const HAS_DATA: bool> CreateTableBuilder<HAS_DATA> {
         );
         self
     }
+
+    /// Set the namespace for the table
+    pub fn namespace(mut self, namespace: Vec<String>) -> Self {
+        self.request.namespace = namespace;
+        self
+    }
 }
 
 #[derive(Clone, Debug)]
@@ -367,6 +380,7 @@ impl OpenTableBuilder {
             parent,
             request: OpenTableRequest {
                 name,
+                namespace: vec![],
                 index_cache_size: None,
                 lance_read_params: None,
             },
@@ -442,6 +456,12 @@ impl OpenTableBuilder {
         self
     }
 
+    /// Set the namespace for the table
+    pub fn namespace(mut self, namespace: Vec<String>) -> Self {
+        self.request.namespace = namespace;
+        self
+    }
+
     /// Open the table
     pub async fn execute(self) -> Result<Table> {
         Ok(Table::new_with_embedding_registry(
@@ -564,9 +584,16 @@ impl Connection {
         &self,
         old_name: impl AsRef<str>,
         new_name: impl AsRef<str>,
+        cur_namespace: &[String],
+        new_namespace: &[String],
     ) -> Result<()> {
         self.internal
-            .rename_table(old_name.as_ref(), new_name.as_ref())
+            .rename_table(
+                old_name.as_ref(),
+                new_name.as_ref(),
+                cur_namespace,
+                new_namespace,
+            )
             .await
     }
 
@@ -574,8 +601,9 @@ impl Connection {
     ///
     /// # Arguments
     /// * `name` - The name of the table to drop
-    pub async fn drop_table(&self, name: impl AsRef<str>) -> Result<()> {
+    /// * `namespace` - The namespace to drop the table from
-        self.internal.drop_table(name.as_ref()).await
+    pub async fn drop_table(&self, name: impl AsRef<str>, namespace: &[String]) -> Result<()> {
+        self.internal.drop_table(name.as_ref(), namespace).await
     }
 
     /// Drop the database
@@ -583,12 +611,30 @@ impl Connection {
     /// This is the same as dropping all of the tables
     #[deprecated(since = "0.15.1", note = "Use `drop_all_tables` instead")]
     pub async fn drop_db(&self) -> Result<()> {
-        self.internal.drop_all_tables().await
+        self.internal.drop_all_tables(&[]).await
     }
 
     /// Drops all tables in the database
-    pub async fn drop_all_tables(&self) -> Result<()> {
+    ///
-        self.internal.drop_all_tables().await
+    /// # Arguments
+    /// * `namespace` - The namespace to drop all tables from. Empty slice represents root namespace.
+    pub async fn drop_all_tables(&self, namespace: &[String]) -> Result<()> {
+        self.internal.drop_all_tables(namespace).await
+    }
+
+    /// List immediate child namespace names in the given namespace
+    pub async fn list_namespaces(&self, request: ListNamespacesRequest) -> Result<Vec<String>> {
+        self.internal.list_namespaces(request).await
+    }
+
+    /// Create a new namespace
+    pub async fn create_namespace(&self, request: CreateNamespaceRequest) -> Result<()> {
+        self.internal.create_namespace(request).await
+    }
+
+    /// Drop a namespace
+    pub async fn drop_namespace(&self, request: DropNamespaceRequest) -> Result<()> {
+        self.internal.drop_namespace(request).await
     }
 
     /// Get the in-memory embedding registry.
@@ -1220,12 +1266,12 @@ mod tests {
 
         // drop non-exist table
         assert!(matches!(
-            db.drop_table("invalid_table").await,
+            db.drop_table("invalid_table", &[]).await,
             Err(crate::Error::TableNotFound { .. }),
         ));
 
         create_dir_all(tmp_dir.path().join("table1.lance")).unwrap();
-        db.drop_table("table1").await.unwrap();
+        db.drop_table("table1", &[]).await.unwrap();
 
         let tables = db.table_names().execute().await.unwrap();
         assert_eq!(tables.len(), 0);

rust/lancedb/src/database.rs

@@ -34,9 +34,36 @@ pub trait DatabaseOptions {
     fn serialize_into_map(&self, map: &mut HashMap<String, String>);
 }
 
+/// A request to list namespaces in the database
+#[derive(Clone, Debug, Default)]
+pub struct ListNamespacesRequest {
+    /// The parent namespace to list namespaces in. Empty list represents root namespace.
+    pub namespace: Vec<String>,
+    /// If present, only return names that come lexicographically after the supplied value.
+    pub page_token: Option<String>,
+    /// The maximum number of namespace names to return
+    pub limit: Option<u32>,
+}
+
+/// A request to create a namespace
+#[derive(Clone, Debug)]
+pub struct CreateNamespaceRequest {
+    /// The namespace identifier to create
+    pub namespace: Vec<String>,
+}
+
+/// A request to drop a namespace
+#[derive(Clone, Debug)]
+pub struct DropNamespaceRequest {
+    /// The namespace identifier to drop
+    pub namespace: Vec<String>,
+}
+
 /// A request to list names of tables in the database
 #[derive(Clone, Debug, Default)]
 pub struct TableNamesRequest {
+    /// The namespace to list tables in. Empty list represents root namespace.
+    pub namespace: Vec<String>,
     /// If present, only return names that come lexicographically after the supplied
     /// value.
     ///
@@ -51,6 +78,8 @@ pub struct TableNamesRequest {
 #[derive(Clone, Debug)]
 pub struct OpenTableRequest {
     pub name: String,
+    /// The namespace to open the table from. Empty list represents root namespace.
+    pub namespace: Vec<String>,
     pub index_cache_size: Option<u32>,
     pub lance_read_params: Option<ReadParams>,
 }
@@ -125,6 +154,8 @@ impl StreamingWriteSource for CreateTableData {
 pub struct CreateTableRequest {
     /// The name of the new table
     pub name: String,
+    /// The namespace to create the table in. Empty list represents root namespace.
+    pub namespace: Vec<String>,
     /// Initial data to write to the table, can be None to create an empty table
     pub data: CreateTableData,
     /// The mode to use when creating the table
@@ -137,6 +168,7 @@ impl CreateTableRequest {
     pub fn new(name: String, data: CreateTableData) -> Self {
         Self {
             name,
+            namespace: vec![],
             data,
             mode: CreateTableMode::default(),
             write_options: WriteOptions::default(),
@@ -151,6 +183,12 @@ impl CreateTableRequest {
 pub trait Database:
     Send + Sync + std::any::Any + std::fmt::Debug + std::fmt::Display + 'static
 {
+    /// List immediate child namespace names in the given namespace
+    async fn list_namespaces(&self, request: ListNamespacesRequest) -> Result<Vec<String>>;
+    /// Create a new namespace
+    async fn create_namespace(&self, request: CreateNamespaceRequest) -> Result<()>;
+    /// Drop a namespace
+    async fn drop_namespace(&self, request: DropNamespaceRequest) -> Result<()>;
     /// List the names of tables in the database
     async fn table_names(&self, request: TableNamesRequest) -> Result<Vec<String>>;
     /// Create a table in the database
@@ -158,10 +196,16 @@ pub trait Database:
     /// Open a table in the database
     async fn open_table(&self, request: OpenTableRequest) -> Result<Arc<dyn BaseTable>>;
     /// Rename a table in the database
-    async fn rename_table(&self, old_name: &str, new_name: &str) -> Result<()>;
+    async fn rename_table(
+        &self,
+        cur_name: &str,
+        new_name: &str,
+        cur_namespace: &[String],
+        new_namespace: &[String],
+    ) -> Result<()>;
     /// Drop a table in the database
-    async fn drop_table(&self, name: &str) -> Result<()>;
+    async fn drop_table(&self, name: &str, namespace: &[String]) -> Result<()>;
     /// Drop all tables in the database
-    async fn drop_all_tables(&self) -> Result<()>;
+    async fn drop_all_tables(&self, namespace: &[String]) -> Result<()>;
     fn as_any(&self) -> &dyn std::any::Any;
 }

rust/lancedb/src/database/listing.rs

@@ -22,7 +22,8 @@ use crate::table::NativeTable;
 use crate::utils::validate_table_name;
 
 use super::{
-    BaseTable, CreateTableMode, CreateTableRequest, Database, DatabaseOptions, OpenTableRequest,
+    BaseTable, CreateNamespaceRequest, CreateTableMode, CreateTableRequest, Database,
+    DatabaseOptions, DropNamespaceRequest, ListNamespacesRequest, OpenTableRequest,
     TableNamesRequest,
 };
 
@@ -551,6 +552,7 @@ impl ListingDatabase {
     async fn handle_table_exists(
         &self,
         table_name: &str,
+        namespace: Vec<String>,
         mode: CreateTableMode,
         data_schema: &arrow_schema::Schema,
     ) -> Result<Arc<dyn BaseTable>> {
@@ -561,6 +563,7 @@ impl ListingDatabase {
             CreateTableMode::ExistOk(callback) => {
                 let req = OpenTableRequest {
                     name: table_name.to_string(),
+                    namespace: namespace.clone(),
                     index_cache_size: None,
                     lance_read_params: None,
                 };
@@ -584,7 +587,28 @@ impl ListingDatabase {
 
 #[async_trait::async_trait]
 impl Database for ListingDatabase {
+    async fn list_namespaces(&self, _request: ListNamespacesRequest) -> Result<Vec<String>> {
+        Ok(Vec::new())
+    }
+
+    async fn create_namespace(&self, _request: CreateNamespaceRequest) -> Result<()> {
+        Err(Error::NotSupported {
+            message: "Namespace operations are not supported for listing database".into(),
+        })
+    }
+
+    async fn drop_namespace(&self, _request: DropNamespaceRequest) -> Result<()> {
+        Err(Error::NotSupported {
+            message: "Namespace operations are not supported for listing database".into(),
+        })
+    }
+
     async fn table_names(&self, request: TableNamesRequest) -> Result<Vec<String>> {
+        if !request.namespace.is_empty() {
+            return Err(Error::NotSupported {
+                message: "Namespace parameter is not supported for listing database. Only root namespace is supported.".into(),
+            });
+        }
         let mut f = self
             .object_store
             .read_dir(self.base_path.clone())
@@ -615,6 +639,11 @@ impl Database for ListingDatabase {
     }
 
     async fn create_table(&self, request: CreateTableRequest) -> Result<Arc<dyn BaseTable>> {
+        if !request.namespace.is_empty() {
+            return Err(Error::NotSupported {
+                message: "Namespace parameter is not supported for listing database. Only root namespace is supported.".into(),
+            });
+        }
         let table_uri = self.table_uri(&request.name)?;
 
         let (storage_version_override, v2_manifest_override) =
@@ -637,7 +666,12 @@ impl Database for ListingDatabase {
         {
             Ok(table) => Ok(Arc::new(table)),
             Err(Error::TableAlreadyExists { .. }) => {
-                self.handle_table_exists(&request.name, request.mode, &data_schema)
+                self.handle_table_exists(
+                    &request.name,
+                    request.namespace.clone(),
+                    request.mode,
+                    &data_schema,
+                )
                 .await
             }
             Err(err) => Err(err),
@@ -645,6 +679,11 @@ impl Database for ListingDatabase {
     }
 
     async fn open_table(&self, mut request: OpenTableRequest) -> Result<Arc<dyn BaseTable>> {
+        if !request.namespace.is_empty() {
+            return Err(Error::NotSupported {
+                message: "Namespace parameter is not supported for listing database. Only root namespace is supported.".into(),
+            });
+        }
         let table_uri = self.table_uri(&request.name)?;
 
         // Only modify the storage options if we actually have something to
@@ -694,17 +733,44 @@ impl Database for ListingDatabase {
         Ok(native_table)
     }
 
-    async fn rename_table(&self, _old_name: &str, _new_name: &str) -> Result<()> {
+    async fn rename_table(
+        &self,
+        _cur_name: &str,
+        _new_name: &str,
+        cur_namespace: &[String],
+        new_namespace: &[String],
+    ) -> Result<()> {
+        if !cur_namespace.is_empty() {
+            return Err(Error::NotSupported {
+                message: "Namespace parameter is not supported for listing database.".into(),
+            });
+        }
+        if !new_namespace.is_empty() {
+            return Err(Error::NotSupported {
+                message: "Namespace parameter is not supported for listing database.".into(),
+            });
+        }
         Err(Error::NotSupported {
-            message: "rename_table is not supported in LanceDB OSS".to_string(),
+            message: "rename_table is not supported in LanceDB OSS".into(),
         })
     }
 
-    async fn drop_table(&self, name: &str) -> Result<()> {
+    async fn drop_table(&self, name: &str, namespace: &[String]) -> Result<()> {
+        if !namespace.is_empty() {
+            return Err(Error::NotSupported {
+                message: "Namespace parameter is not supported for listing database.".into(),
+            });
+        }
         self.drop_tables(vec![name.to_string()]).await
     }
 
-    async fn drop_all_tables(&self) -> Result<()> {
+    async fn drop_all_tables(&self, namespace: &[String]) -> Result<()> {
+        // Check if namespace parameter is provided
+        if !namespace.is_empty() {
+            return Err(Error::NotSupported {
+                message: "Namespace parameter is not supported for listing database.".into(),
+            });
+        }
         let tables = self.table_names(TableNamesRequest::default()).await?;
         self.drop_tables(tables).await
     }

rust/lancedb/src/io/object_store.rs

@@ -9,7 +9,7 @@ use futures::{stream::BoxStream, TryFutureExt};
 use lance::io::WrappingObjectStore;
 use object_store::{
     path::Path, Error, GetOptions, GetResult, ListResult, MultipartUpload, ObjectMeta, ObjectStore,
-    PutMultipartOpts, PutOptions, PutPayload, PutResult, Result, UploadPart,
+    PutMultipartOptions, PutOptions, PutPayload, PutResult, Result, UploadPart,
 };
 
 use async_trait::async_trait;
@@ -73,7 +73,7 @@ impl ObjectStore for MirroringObjectStore {
     async fn put_multipart_opts(
         &self,
         location: &Path,
-        opts: PutMultipartOpts,
+        opts: PutMultipartOptions,
     ) -> Result<Box<dyn MultipartUpload>> {
         if location.primary_only() {
             return self.primary.put_multipart_opts(location, opts).await;
@@ -170,7 +170,11 @@ impl MirroringObjectStoreWrapper {
 }
 
 impl WrappingObjectStore for MirroringObjectStoreWrapper {
-    fn wrap(&self, primary: Arc<dyn ObjectStore>) -> Arc<dyn ObjectStore> {
+    fn wrap(
+        &self,
+        primary: Arc<dyn ObjectStore>,
+        _storage_options: Option<&std::collections::HashMap<String, String>>,
+    ) -> Arc<dyn ObjectStore> {
         Arc::new(MirroringObjectStore {
             primary,
             secondary: self.secondary.clone(),

rust/lancedb/src/io/object_store/io_tracking.rs

@@ -11,7 +11,7 @@ use futures::stream::BoxStream;
 use lance::io::WrappingObjectStore;
 use object_store::{
     path::Path, GetOptions, GetResult, ListResult, MultipartUpload, ObjectMeta, ObjectStore,
-    PutMultipartOpts, PutOptions, PutPayload, PutResult, Result as OSResult, UploadPart,
+    PutMultipartOptions, PutOptions, PutPayload, PutResult, Result as OSResult, UploadPart,
 };
 
 #[derive(Debug, Default)]
@@ -50,7 +50,11 @@ impl IoStatsHolder {
 }
 
 impl WrappingObjectStore for IoStatsHolder {
-    fn wrap(&self, target: Arc<dyn ObjectStore>) -> Arc<dyn ObjectStore> {
+    fn wrap(
+        &self,
+        target: Arc<dyn ObjectStore>,
+        _storage_options: Option<&std::collections::HashMap<String, String>>,
+    ) -> Arc<dyn ObjectStore> {
         Arc::new(IoTrackingStore {
             target,
             stats: self.0.clone(),
@@ -106,7 +110,7 @@ impl ObjectStore for IoTrackingStore {
     async fn put_multipart_opts(
         &self,
         location: &Path,
-        opts: PutMultipartOpts,
+        opts: PutMultipartOptions,
     ) -> OSResult<Box<dyn MultipartUpload>> {
         let target = self.target.put_multipart_opts(location, opts).await?;
         Ok(Box::new(IoTrackingMultipartUpload {

rust/lancedb/src/remote/client.rs

@@ -25,6 +25,9 @@ pub struct ClientConfig {
     pub user_agent: String,
     // TODO: how to configure request ids?
     pub extra_headers: HashMap<String, String>,
+    /// The delimiter to use when constructing object identifiers.
+    /// If not default, passes as query parameter.
+    pub id_delimiter: Option<String>,
 }
 
 impl Default for ClientConfig {
@@ -34,6 +37,7 @@ impl Default for ClientConfig {
             retry_config: RetryConfig::default(),
             user_agent: concat!("LanceDB-Rust-Client/", env!("CARGO_PKG_VERSION")).into(),
             extra_headers: HashMap::new(),
+            id_delimiter: None,
         }
     }
 }
@@ -145,6 +149,7 @@ pub struct RestfulLanceDbClient<S: HttpSend = Sender> {
     host: String,
     pub(crate) retry_config: ResolvedRetryConfig,
     pub(crate) sender: S,
+    pub(crate) id_delimiter: String,
 }
 
 pub trait HttpSend: Clone + Send + Sync + std::fmt::Debug + 'static {
@@ -268,6 +273,7 @@ impl RestfulLanceDbClient<Sender> {
             host,
             retry_config,
             sender: Sender,
+            id_delimiter: client_config.id_delimiter.unwrap_or("$".to_string()),
         })
     }
 }
@@ -356,12 +362,22 @@ impl<S: HttpSend> RestfulLanceDbClient<S> {
 
     pub fn get(&self, uri: &str) -> RequestBuilder {
         let full_uri = format!("{}{}", self.host, uri);
-        self.client.get(full_uri)
+        let builder = self.client.get(full_uri);
+        self.add_id_delimiter_query_param(builder)
     }
 
     pub fn post(&self, uri: &str) -> RequestBuilder {
         let full_uri = format!("{}{}", self.host, uri);
-        self.client.post(full_uri)
+        let builder = self.client.post(full_uri);
+        self.add_id_delimiter_query_param(builder)
+    }
+
+    fn add_id_delimiter_query_param(&self, req: RequestBuilder) -> RequestBuilder {
+        if self.id_delimiter != "$" {
+            req.query(&[("delimiter", self.id_delimiter.clone())])
+        } else {
+            req
+        }
     }
 
     pub async fn send(&self, req: RequestBuilder) -> Result<(String, Response)> {
@@ -594,6 +610,7 @@ pub mod test_utils {
             sender: MockSender {
                 f: Arc::new(wrapper),
             },
+            id_delimiter: "$".to_string(),
         }
     }
 }

rust/lancedb/src/remote/db.rs

@@ -14,8 +14,9 @@ use serde::Deserialize;
 use tokio::task::spawn_blocking;
 
 use crate::database::{
-    CreateTableData, CreateTableMode, CreateTableRequest, Database, DatabaseOptions,
+    CreateNamespaceRequest, CreateTableData, CreateTableMode, CreateTableRequest, Database,
-    OpenTableRequest, TableNamesRequest,
+    DatabaseOptions, DropNamespaceRequest, ListNamespacesRequest, OpenTableRequest,
+    TableNamesRequest,
 };
 use crate::error::Result;
 use crate::table::BaseTable;
@@ -245,10 +246,61 @@ impl From<&CreateTableMode> for &'static str {
     }
 }
 
+fn build_table_identifier(name: &str, namespace: &[String], delimiter: &str) -> String {
+    if !namespace.is_empty() {
+        let mut parts = namespace.to_vec();
+        parts.push(name.to_string());
+        parts.join(delimiter)
+    } else {
+        name.to_string()
+    }
+}
+
+fn build_namespace_identifier(namespace: &[String], delimiter: &str) -> String {
+    if namespace.is_empty() {
+        // According to the namespace spec, use delimiter to represent root namespace
+        delimiter.to_string()
+    } else {
+        namespace.join(delimiter)
+    }
+}
+
+/// Build a secure cache key using length prefixes.
+/// This format is completely unambiguous regardless of delimiter or content.
+/// Format: [u32_len][namespace1][u32_len][namespace2]...[u32_len][table_name]
+/// Returns a hex-encoded string for use as a cache key.
+fn build_cache_key(name: &str, namespace: &[String]) -> String {
+    let mut key = Vec::new();
+
+    // Add each namespace component with length prefix
+    for ns in namespace {
+        let bytes = ns.as_bytes();
+        key.extend_from_slice(&(bytes.len() as u32).to_le_bytes());
+        key.extend_from_slice(bytes);
+    }
+
+    // Add table name with length prefix
+    let name_bytes = name.as_bytes();
+    key.extend_from_slice(&(name_bytes.len() as u32).to_le_bytes());
+    key.extend_from_slice(name_bytes);
+
+    // Convert to hex string for use as a cache key
+    key.iter().map(|b| format!("{:02x}", b)).collect()
+}
+
 #[async_trait]
 impl<S: HttpSend> Database for RemoteDatabase<S> {
     async fn table_names(&self, request: TableNamesRequest) -> Result<Vec<String>> {
-        let mut req = self.client.get("/v1/table/");
+        let mut req = if !request.namespace.is_empty() {
+            let namespace_id =
+                build_namespace_identifier(&request.namespace, &self.client.id_delimiter);
+            self.client
+                .get(&format!("/v1/namespace/{}/table/list", namespace_id))
+        } else {
+            // TODO: use new API for all listing operations once stable
+            self.client.get("/v1/table/")
+        };
+
         if let Some(limit) = request.limit {
             req = req.query(&[("limit", limit)]);
         }
@@ -264,12 +316,17 @@ impl<S: HttpSend> Database for RemoteDatabase<S> {
             .err_to_http(request_id)?
             .tables;
         for table in &tables {
+            let table_identifier =
+                build_table_identifier(table, &request.namespace, &self.client.id_delimiter);
+            let cache_key = build_cache_key(table, &request.namespace);
             let remote_table = Arc::new(RemoteTable::new(
                 self.client.clone(),
                 table.clone(),
+                request.namespace.clone(),
+                table_identifier.clone(),
                 version.clone(),
             ));
-            self.table_cache.insert(table.clone(), remote_table).await;
+            self.table_cache.insert(cache_key, remote_table).await;
         }
         Ok(tables)
     }
@@ -295,9 +352,11 @@ impl<S: HttpSend> Database for RemoteDatabase<S> {
             .await
             .unwrap()?;
 
+        let identifier =
+            build_table_identifier(&request.name, &request.namespace, &self.client.id_delimiter);
         let req = self
             .client
-            .post(&format!("/v1/table/{}/create/", request.name))
+            .post(&format!("/v1/table/{}/create/", identifier))
             .query(&[("mode", Into::<&str>::into(&request.mode))])
             .body(data_buffer)
             .header(CONTENT_TYPE, ARROW_STREAM_CONTENT_TYPE);
@@ -314,6 +373,7 @@ impl<S: HttpSend> Database for RemoteDatabase<S> {
                     CreateTableMode::ExistOk(callback) => {
                         let req = OpenTableRequest {
                             name: request.name.clone(),
+                            namespace: request.namespace.clone(),
                             index_cache_size: None,
                             lance_read_params: None,
                         };
@@ -342,70 +402,160 @@ impl<S: HttpSend> Database for RemoteDatabase<S> {
         }
         let rsp = self.client.check_response(&request_id, rsp).await?;
         let version = parse_server_version(&request_id, &rsp)?;
+        let table_identifier =
+            build_table_identifier(&request.name, &request.namespace, &self.client.id_delimiter);
+        let cache_key = build_cache_key(&request.name, &request.namespace);
         let table = Arc::new(RemoteTable::new(
             self.client.clone(),
             request.name.clone(),
+            request.namespace.clone(),
+            table_identifier,
             version,
         ));
-        self.table_cache
+        self.table_cache.insert(cache_key, table.clone()).await;
-            .insert(request.name.clone(), table.clone())
-            .await;
 
         Ok(table)
     }
 
     async fn open_table(&self, request: OpenTableRequest) -> Result<Arc<dyn BaseTable>> {
+        let identifier =
+            build_table_identifier(&request.name, &request.namespace, &self.client.id_delimiter);
+        let cache_key = build_cache_key(&request.name, &request.namespace);
+
         // We describe the table to confirm it exists before moving on.
-        if let Some(table) = self.table_cache.get(&request.name).await {
+        if let Some(table) = self.table_cache.get(&cache_key).await {
             Ok(table.clone())
         } else {
             let req = self
                 .client
-                .post(&format!("/v1/table/{}/describe/", request.name));
+                .post(&format!("/v1/table/{}/describe/", identifier));
             let (request_id, rsp) = self.client.send_with_retry(req, None, true).await?;
             if rsp.status() == StatusCode::NOT_FOUND {
-                return Err(crate::Error::TableNotFound { name: request.name });
+                return Err(crate::Error::TableNotFound {
+                    name: identifier.clone(),
+                });
             }
             let rsp = self.client.check_response(&request_id, rsp).await?;
             let version = parse_server_version(&request_id, &rsp)?;
+            let table_identifier = build_table_identifier(
+                &request.name,
+                &request.namespace,
+                &self.client.id_delimiter,
+            );
             let table = Arc::new(RemoteTable::new(
                 self.client.clone(),
                 request.name.clone(),
+                request.namespace.clone(),
+                table_identifier,
                 version,
             ));
-            self.table_cache.insert(request.name, table.clone()).await;
+            let cache_key = build_cache_key(&request.name, &request.namespace);
+            self.table_cache.insert(cache_key, table.clone()).await;
             Ok(table)
         }
     }
 
-    async fn rename_table(&self, current_name: &str, new_name: &str) -> Result<()> {
+    async fn rename_table(
+        &self,
+        current_name: &str,
+        new_name: &str,
+        cur_namespace: &[String],
+        new_namespace: &[String],
+    ) -> Result<()> {
+        let current_identifier =
+            build_table_identifier(current_name, cur_namespace, &self.client.id_delimiter);
+        let current_cache_key = build_cache_key(current_name, cur_namespace);
+        let new_cache_key = build_cache_key(new_name, new_namespace);
+
+        let mut body = serde_json::json!({ "new_table_name": new_name });
+        if !new_namespace.is_empty() {
+            body["new_namespace"] = serde_json::Value::Array(
+                new_namespace
+                    .iter()
+                    .map(|s| serde_json::Value::String(s.clone()))
+                    .collect(),
+            );
+        }
         let req = self
             .client
-            .post(&format!("/v1/table/{}/rename/", current_name));
+            .post(&format!("/v1/table/{}/rename/", current_identifier))
-        let req = req.json(&serde_json::json!({ "new_table_name": new_name }));
+            .json(&body);
         let (request_id, resp) = self.client.send(req).await?;
         self.client.check_response(&request_id, resp).await?;
-        let table = self.table_cache.remove(current_name).await;
+        let table = self.table_cache.remove(&current_cache_key).await;
         if let Some(table) = table {
-            self.table_cache.insert(new_name.into(), table).await;
+            self.table_cache.insert(new_cache_key, table).await;
         }
         Ok(())
     }
 
-    async fn drop_table(&self, name: &str) -> Result<()> {
+    async fn drop_table(&self, name: &str, namespace: &[String]) -> Result<()> {
-        let req = self.client.post(&format!("/v1/table/{}/drop/", name));
+        let identifier = build_table_identifier(name, namespace, &self.client.id_delimiter);
+        let cache_key = build_cache_key(name, namespace);
+        let req = self.client.post(&format!("/v1/table/{}/drop/", identifier));
         let (request_id, resp) = self.client.send(req).await?;
         self.client.check_response(&request_id, resp).await?;
-        self.table_cache.remove(name).await;
+        self.table_cache.remove(&cache_key).await;
         Ok(())
     }
 
-    async fn drop_all_tables(&self) -> Result<()> {
+    async fn drop_all_tables(&self, namespace: &[String]) -> Result<()> {
+        // TODO: Implement namespace-aware drop_all_tables
+        let _namespace = namespace; // Suppress unused warning for now
         Err(crate::Error::NotSupported {
-            message: "Dropping databases is not supported in the remote API".to_string(),
+            message: "Dropping all tables is not currently supported in the remote API".to_string(),
         })
     }
 
+    async fn list_namespaces(&self, request: ListNamespacesRequest) -> Result<Vec<String>> {
+        let namespace_id =
+            build_namespace_identifier(request.namespace.as_slice(), &self.client.id_delimiter);
+        let mut req = self
+            .client
+            .get(&format!("/v1/namespace/{}/list", namespace_id));
+        if let Some(limit) = request.limit {
+            req = req.query(&[("limit", limit)]);
+        }
+        if let Some(page_token) = request.page_token {
+            req = req.query(&[("page_token", page_token)]);
+        }
+
+        let (request_id, resp) = self.client.send(req).await?;
+        let resp = self.client.check_response(&request_id, resp).await?;
+
+        #[derive(Deserialize)]
+        struct ListNamespacesResponse {
+            namespaces: Vec<String>,
+        }
+
+        let parsed: ListNamespacesResponse = resp.json().await.map_err(|e| Error::Runtime {
+            message: format!("Failed to parse namespace response: {}", e),
+        })?;
+        Ok(parsed.namespaces)
+    }
+
+    async fn create_namespace(&self, request: CreateNamespaceRequest) -> Result<()> {
+        let namespace_id =
+            build_namespace_identifier(request.namespace.as_slice(), &self.client.id_delimiter);
+        let req = self
+            .client
+            .post(&format!("/v1/namespace/{}/create", namespace_id));
+        let (request_id, resp) = self.client.send(req).await?;
+        self.client.check_response(&request_id, resp).await?;
+        Ok(())
+    }
+
+    async fn drop_namespace(&self, request: DropNamespaceRequest) -> Result<()> {
+        let namespace_id =
+            build_namespace_identifier(request.namespace.as_slice(), &self.client.id_delimiter);
+        let req = self
+            .client
+            .post(&format!("/v1/namespace/{}/drop", namespace_id));
+        let (request_id, resp) = self.client.send(req).await?;
+        self.client.check_response(&request_id, resp).await?;
+        Ok(())
+    }
+
     fn as_any(&self) -> &dyn std::any::Any {
         self
     }
@@ -436,6 +586,7 @@ impl From<StorageOptions> for RemoteOptions {
 
 #[cfg(test)]
 mod tests {
+    use super::build_cache_key;
     use std::sync::{Arc, OnceLock};
 
     use arrow_array::{Int32Array, RecordBatch, RecordBatchIterator};
@@ -448,6 +599,38 @@ mod tests {
         Connection, Error,
     };
 
+    #[test]
+    fn test_cache_key_security() {
+        // Test that cache keys are unique regardless of delimiter manipulation
+
+        // Case 1: Different delimiters should not affect cache key
+        let key1 = build_cache_key("table1", &["ns1".to_string(), "ns2".to_string()]);
+        let key2 = build_cache_key("table1", &["ns1$ns2".to_string()]);
+        assert_ne!(
+            key1, key2,
+            "Cache keys should differ for different namespace structures"
+        );
+
+        // Case 2: Table name containing delimiter should not cause collision
+        let key3 = build_cache_key("ns2$table1", &["ns1".to_string()]);
+        assert_ne!(
+            key1, key3,
+            "Cache key should be different when table name contains delimiter"
+        );
+
+        // Case 3: Empty namespace vs namespace with empty string
+        let key4 = build_cache_key("table1", &[]);
+        let key5 = build_cache_key("table1", &["".to_string()]);
+        assert_ne!(
+            key4, key5,
+            "Empty namespace should differ from namespace with empty string"
+        );
+
+        // Case 4: Verify same inputs produce same key (consistency)
+        let key6 = build_cache_key("table1", &["ns1".to_string(), "ns2".to_string()]);
+        assert_eq!(key1, key6, "Same inputs should produce same cache key");
+    }
+
     #[tokio::test]
     async fn test_retries() {
         // We'll record the request_id here, to check it matches the one in the error.
@@ -711,7 +894,7 @@ mod tests {
 
             http::Response::builder().status(200).body("").unwrap()
         });
-        conn.drop_table("table1").await.unwrap();
+        conn.drop_table("table1", &[]).await.unwrap();
         // NOTE: the API will return 200 even if the table does not exist. So we shouldn't expect 404.
     }
 
@@ -731,7 +914,9 @@ mod tests {
 
             http::Response::builder().status(200).body("").unwrap()
         });
-        conn.rename_table("table1", "table2").await.unwrap();
+        conn.rename_table("table1", "table2", &[], &[])
+            .await
+            .unwrap();
     }
 
     #[tokio::test]
@@ -745,4 +930,186 @@ mod tests {
             .await
             .unwrap();
     }
+
+    #[tokio::test]
+    async fn test_table_names_with_root_namespace() {
+        // When namespace is empty (root namespace), should use /v1/table/ for backwards compatibility
+        let conn = Connection::new_with_handler(|request| {
+            assert_eq!(request.method(), &reqwest::Method::GET);
+            assert_eq!(request.url().path(), "/v1/table/");
+            assert_eq!(request.url().query(), None);
+
+            http::Response::builder()
+                .status(200)
+                .body(r#"{"tables": ["table1", "table2"]}"#)
+                .unwrap()
+        });
+        let names = conn
+            .table_names()
+            .namespace(vec![])
+            .execute()
+            .await
+            .unwrap();
+        assert_eq!(names, vec!["table1", "table2"]);
+    }
+
+    #[tokio::test]
+    async fn test_table_names_with_namespace() {
+        // When namespace is non-empty, should use /v1/namespace/{id}/table/list
+        let conn = Connection::new_with_handler(|request| {
+            assert_eq!(request.method(), &reqwest::Method::GET);
+            assert_eq!(request.url().path(), "/v1/namespace/test/table/list");
+            assert_eq!(request.url().query(), None);
+
+            http::Response::builder()
+                .status(200)
+                .body(r#"{"tables": ["table1", "table2"]}"#)
+                .unwrap()
+        });
+        let names = conn
+            .table_names()
+            .namespace(vec!["test".to_string()])
+            .execute()
+            .await
+            .unwrap();
+        assert_eq!(names, vec!["table1", "table2"]);
+    }
+
+    #[tokio::test]
+    async fn test_table_names_with_nested_namespace() {
+        // When namespace is vec!["ns1", "ns2"], should use /v1/namespace/ns1$ns2/table/list
+        let conn = Connection::new_with_handler(|request| {
+            assert_eq!(request.method(), &reqwest::Method::GET);
+            assert_eq!(request.url().path(), "/v1/namespace/ns1$ns2/table/list");
+            assert_eq!(request.url().query(), None);
+
+            http::Response::builder()
+                .status(200)
+                .body(r#"{"tables": ["ns1$ns2$table1", "ns1$ns2$table2"]}"#)
+                .unwrap()
+        });
+        let names = conn
+            .table_names()
+            .namespace(vec!["ns1".to_string(), "ns2".to_string()])
+            .execute()
+            .await
+            .unwrap();
+        assert_eq!(names, vec!["ns1$ns2$table1", "ns1$ns2$table2"]);
+    }
+
+    #[tokio::test]
+    async fn test_open_table_with_namespace() {
+        let conn = Connection::new_with_handler(|request| {
+            assert_eq!(request.method(), &reqwest::Method::POST);
+            assert_eq!(request.url().path(), "/v1/table/ns1$ns2$table1/describe/");
+            assert_eq!(request.url().query(), None);
+
+            http::Response::builder()
+                .status(200)
+                .body(r#"{"table": "table1"}"#)
+                .unwrap()
+        });
+        let table = conn
+            .open_table("table1")
+            .namespace(vec!["ns1".to_string(), "ns2".to_string()])
+            .execute()
+            .await
+            .unwrap();
+        assert_eq!(table.name(), "table1");
+    }
+
+    #[tokio::test]
+    async fn test_create_table_with_namespace() {
+        let conn = Connection::new_with_handler(|request| {
+            assert_eq!(request.method(), &reqwest::Method::POST);
+            assert_eq!(request.url().path(), "/v1/table/ns1$table1/create/");
+            assert_eq!(
+                request
+                    .headers()
+                    .get(reqwest::header::CONTENT_TYPE)
+                    .unwrap(),
+                ARROW_STREAM_CONTENT_TYPE.as_bytes()
+            );
+
+            http::Response::builder().status(200).body("").unwrap()
+        });
+        let data = RecordBatch::try_new(
+            Arc::new(Schema::new(vec![Field::new("a", DataType::Int32, false)])),
+            vec![Arc::new(Int32Array::from(vec![1, 2, 3]))],
+        )
+        .unwrap();
+        let reader = RecordBatchIterator::new([Ok(data.clone())], data.schema());
+        let table = conn
+            .create_table("table1", reader)
+            .namespace(vec!["ns1".to_string()])
+            .execute()
+            .await
+            .unwrap();
+        assert_eq!(table.name(), "table1");
+    }
+
+    #[tokio::test]
+    async fn test_drop_table_with_namespace() {
+        let conn = Connection::new_with_handler(|request| {
+            assert_eq!(request.method(), &reqwest::Method::POST);
+            assert_eq!(request.url().path(), "/v1/table/ns1$ns2$table1/drop/");
+            assert_eq!(request.url().query(), None);
+            assert!(request.body().is_none());
+
+            http::Response::builder().status(200).body("").unwrap()
+        });
+        conn.drop_table("table1", &["ns1".to_string(), "ns2".to_string()])
+            .await
+            .unwrap();
+    }
+
+    #[tokio::test]
+    async fn test_rename_table_with_namespace() {
+        let conn = Connection::new_with_handler(|request| {
+            assert_eq!(request.method(), &reqwest::Method::POST);
+            assert_eq!(request.url().path(), "/v1/table/ns1$table1/rename/");
+            assert_eq!(
+                request.headers().get("Content-Type").unwrap(),
+                JSON_CONTENT_TYPE
+            );
+
+            let body = request.body().unwrap().as_bytes().unwrap();
+            let body: serde_json::Value = serde_json::from_slice(body).unwrap();
+            assert_eq!(body["new_table_name"], "table2");
+            assert_eq!(body["new_namespace"], serde_json::json!(["ns2"]));
+
+            http::Response::builder().status(200).body("").unwrap()
+        });
+        conn.rename_table(
+            "table1",
+            "table2",
+            &["ns1".to_string()],
+            &["ns2".to_string()],
+        )
+        .await
+        .unwrap();
+    }
+
+    #[tokio::test]
+    async fn test_create_empty_table_with_namespace() {
+        let conn = Connection::new_with_handler(|request| {
+            assert_eq!(request.method(), &reqwest::Method::POST);
+            assert_eq!(request.url().path(), "/v1/table/prod$data$metrics/create/");
+            assert_eq!(
+                request
+                    .headers()
+                    .get(reqwest::header::CONTENT_TYPE)
+                    .unwrap(),
+                ARROW_STREAM_CONTENT_TYPE.as_bytes()
+            );
+
+            http::Response::builder().status(200).body("").unwrap()
+        });
+        let schema = Arc::new(Schema::new(vec![Field::new("a", DataType::Int32, false)]));
+        conn.create_empty_table("metrics", schema)
+            .namespace(vec!["prod".to_string(), "data".to_string()])
+            .execute()
+            .await
+            .unwrap();
+    }
 }

rust/lancedb/src/remote/table.rs

@@ -70,7 +70,7 @@ impl<S: HttpSend + 'static> Tags for RemoteTags<'_, S> {
         let request = self
             .inner
             .client
-            .post(&format!("/v1/table/{}/tags/list/", self.inner.name));
+            .post(&format!("/v1/table/{}/tags/list/", self.inner.identifier));
         let (request_id, response) = self.inner.send(request, true).await?;
         let response = self
             .inner
@@ -104,7 +104,10 @@ impl<S: HttpSend + 'static> Tags for RemoteTags<'_, S> {
         let request = self
             .inner
             .client
-            .post(&format!("/v1/table/{}/tags/version/", self.inner.name))
+            .post(&format!(
+                "/v1/table/{}/tags/version/",
+                self.inner.identifier
+            ))
             .json(&serde_json::json!({ "tag": tag }));
 
         let (request_id, response) = self.inner.send(request, true).await?;
@@ -146,7 +149,7 @@ impl<S: HttpSend + 'static> Tags for RemoteTags<'_, S> {
         let request = self
             .inner
             .client
-            .post(&format!("/v1/table/{}/tags/create/", self.inner.name))
+            .post(&format!("/v1/table/{}/tags/create/", self.inner.identifier))
             .json(&serde_json::json!({
                 "tag": tag,
                 "version": version
@@ -163,7 +166,7 @@ impl<S: HttpSend + 'static> Tags for RemoteTags<'_, S> {
         let request = self
             .inner
             .client
-            .post(&format!("/v1/table/{}/tags/delete/", self.inner.name))
+            .post(&format!("/v1/table/{}/tags/delete/", self.inner.identifier))
             .json(&serde_json::json!({ "tag": tag }));
 
         let (request_id, response) = self.inner.send(request, true).await?;
@@ -177,7 +180,7 @@ impl<S: HttpSend + 'static> Tags for RemoteTags<'_, S> {
         let request = self
             .inner
             .client
-            .post(&format!("/v1/table/{}/tags/update/", self.inner.name))
+            .post(&format!("/v1/table/{}/tags/update/", self.inner.identifier))
             .json(&serde_json::json!({
                 "tag": tag,
                 "version": version
@@ -196,6 +199,8 @@ pub struct RemoteTable<S: HttpSend = Sender> {
     #[allow(dead_code)]
     client: RestfulLanceDbClient<S>,
     name: String,
+    namespace: Vec<String>,
+    identifier: String,
     server_version: ServerVersion,
 
     version: RwLock<Option<u64>>,
@@ -205,11 +210,15 @@ impl<S: HttpSend> RemoteTable<S> {
     pub fn new(
         client: RestfulLanceDbClient<S>,
         name: String,
+        namespace: Vec<String>,
+        identifier: String,
         server_version: ServerVersion,
     ) -> Self {
         Self {
             client,
             name,
+            namespace,
+            identifier,
             server_version,
             version: RwLock::new(None),
         }
@@ -223,7 +232,7 @@ impl<S: HttpSend> RemoteTable<S> {
     async fn describe_version(&self, version: Option<u64>) -> Result<TableDescription> {
         let mut request = self
             .client
-            .post(&format!("/v1/table/{}/describe/", self.name));
+            .post(&format!("/v1/table/{}/describe/", self.identifier));
 
         let body = serde_json::json!({ "version": version });
         request = request.json(&body);
@@ -334,7 +343,7 @@ impl<S: HttpSend> RemoteTable<S> {
     ) -> Result<reqwest::Response> {
         if response.status() == StatusCode::NOT_FOUND {
             return Err(Error::TableNotFound {
-                name: self.name.clone(),
+                name: self.identifier.clone(),
             });
         }
 
@@ -548,7 +557,9 @@ impl<S: HttpSend> RemoteTable<S> {
         query: &AnyQuery,
         options: &QueryExecutionOptions,
     ) -> Result<Vec<Pin<Box<dyn RecordBatchStream + Send>>>> {
-        let mut request = self.client.post(&format!("/v1/table/{}/query/", self.name));
+        let mut request = self
+            .client
+            .post(&format!("/v1/table/{}/query/", self.identifier));
 
         if let Some(timeout) = options.timeout {
             // Also send to server, so it can abort the query if it takes too long.
@@ -615,7 +626,7 @@ struct TableDescription {
 
 impl<S: HttpSend> std::fmt::Display for RemoteTable<S> {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        write!(f, "RemoteTable({})", self.name)
+        write!(f, "RemoteTable({})", self.identifier)
     }
 }
 
@@ -634,7 +645,9 @@ mod test_utils {
             let client = client_with_handler(handler);
             Self {
                 client,
-                name,
+                name: name.clone(),
+                namespace: vec![],
+                identifier: name,
                 server_version: version.map(ServerVersion).unwrap_or_default(),
                 version: RwLock::new(None),
             }
@@ -650,6 +663,14 @@ impl<S: HttpSend> BaseTable for RemoteTable<S> {
     fn name(&self) -> &str {
         &self.name
     }
+
+    fn namespace(&self) -> &[String] {
+        &self.namespace
+    }
+
+    fn id(&self) -> &str {
+        &self.identifier
+    }
     async fn version(&self) -> Result<u64> {
         self.describe().await.map(|desc| desc.version)
     }
@@ -678,7 +699,7 @@ impl<S: HttpSend> BaseTable for RemoteTable<S> {
     async fn restore(&self) -> Result<()> {
         let mut request = self
             .client
-            .post(&format!("/v1/table/{}/restore/", self.name));
+            .post(&format!("/v1/table/{}/restore/", self.identifier));
         let version = self.current_version().await;
         let body = serde_json::json!({ "version": version });
         request = request.json(&body);
@@ -692,7 +713,7 @@ impl<S: HttpSend> BaseTable for RemoteTable<S> {
     async fn list_versions(&self) -> Result<Vec<Version>> {
         let request = self
             .client
-            .post(&format!("/v1/table/{}/version/list/", self.name));
+            .post(&format!("/v1/table/{}/version/list/", self.identifier));
         let (request_id, response) = self.send(request, true).await?;
         let response = self.check_table_response(&request_id, response).await?;
 
@@ -723,7 +744,7 @@ impl<S: HttpSend> BaseTable for RemoteTable<S> {
     async fn count_rows(&self, filter: Option<Filter>) -> Result<usize> {
         let mut request = self
             .client
-            .post(&format!("/v1/table/{}/count_rows/", self.name));
+            .post(&format!("/v1/table/{}/count_rows/", self.identifier));
 
         let version = self.current_version().await;
 
@@ -759,7 +780,7 @@ impl<S: HttpSend> BaseTable for RemoteTable<S> {
         self.check_mutable().await?;
         let mut request = self
             .client
-            .post(&format!("/v1/table/{}/insert/", self.name))
+            .post(&format!("/v1/table/{}/insert/", self.identifier))
             .header(CONTENT_TYPE, ARROW_STREAM_CONTENT_TYPE);
 
         match add.mode {
@@ -831,7 +852,7 @@ impl<S: HttpSend> BaseTable for RemoteTable<S> {
     async fn explain_plan(&self, query: &AnyQuery, verbose: bool) -> Result<String> {
         let base_request = self
             .client
-            .post(&format!("/v1/table/{}/explain_plan/", self.name));
+            .post(&format!("/v1/table/{}/explain_plan/", self.identifier));
 
         let query_bodies = self.prepare_query_bodies(query).await?;
         let requests: Vec<reqwest::RequestBuilder> = query_bodies
@@ -880,7 +901,7 @@ impl<S: HttpSend> BaseTable for RemoteTable<S> {
     ) -> Result<String> {
         let request = self
             .client
-            .post(&format!("/v1/table/{}/analyze_plan/", self.name));
+            .post(&format!("/v1/table/{}/analyze_plan/", self.identifier));
 
         let query_bodies = self.prepare_query_bodies(query).await?;
         let requests: Vec<reqwest::RequestBuilder> = query_bodies
@@ -919,7 +940,7 @@ impl<S: HttpSend> BaseTable for RemoteTable<S> {
         self.check_mutable().await?;
         let request = self
             .client
-            .post(&format!("/v1/table/{}/update/", self.name));
+            .post(&format!("/v1/table/{}/update/", self.identifier));
 
         let mut updates = Vec::new();
         for (column, expression) in update.columns {
@@ -958,7 +979,7 @@ impl<S: HttpSend> BaseTable for RemoteTable<S> {
         let body = serde_json::json!({ "predicate": predicate });
         let request = self
             .client
-            .post(&format!("/v1/table/{}/delete/", self.name))
+            .post(&format!("/v1/table/{}/delete/", self.identifier))
             .json(&body);
         let (request_id, response) = self.send(request, true).await?;
         let response = self.check_table_response(&request_id, response).await?;
@@ -980,7 +1001,7 @@ impl<S: HttpSend> BaseTable for RemoteTable<S> {
         self.check_mutable().await?;
         let request = self
             .client
-            .post(&format!("/v1/table/{}/create_index/", self.name));
+            .post(&format!("/v1/table/{}/create_index/", self.identifier));
 
         let column = match index.columns.len() {
             0 => {
@@ -1121,7 +1142,7 @@ impl<S: HttpSend> BaseTable for RemoteTable<S> {
         let query = MergeInsertRequest::try_from(params)?;
         let mut request = self
             .client
-            .post(&format!("/v1/table/{}/merge_insert/", self.name))
+            .post(&format!("/v1/table/{}/merge_insert/", self.identifier))
             .query(&query)
             .header(CONTENT_TYPE, ARROW_STREAM_CONTENT_TYPE);
 
@@ -1193,7 +1214,7 @@ impl<S: HttpSend> BaseTable for RemoteTable<S> {
                 let body = serde_json::json!({ "new_columns": body });
                 let request = self
                     .client
-                    .post(&format!("/v1/table/{}/add_columns/", self.name))
+                    .post(&format!("/v1/table/{}/add_columns/", self.identifier))
                     .json(&body);
                 let (request_id, response) = self.send(request, true).await?;
                 let response = self.check_table_response(&request_id, response).await?;
@@ -1246,7 +1267,7 @@ impl<S: HttpSend> BaseTable for RemoteTable<S> {
         let body = serde_json::json!({ "alterations": body });
         let request = self
             .client
-            .post(&format!("/v1/table/{}/alter_columns/", self.name))
+            .post(&format!("/v1/table/{}/alter_columns/", self.identifier))
             .json(&body);
         let (request_id, response) = self.send(request, true).await?;
         let response = self.check_table_response(&request_id, response).await?;
@@ -1271,7 +1292,7 @@ impl<S: HttpSend> BaseTable for RemoteTable<S> {
         let body = serde_json::json!({ "columns": columns });
         let request = self
             .client
-            .post(&format!("/v1/table/{}/drop_columns/", self.name))
+            .post(&format!("/v1/table/{}/drop_columns/", self.identifier))
             .json(&body);
         let (request_id, response) = self.send(request, true).await?;
         let response = self.check_table_response(&request_id, response).await?;
@@ -1295,7 +1316,7 @@ impl<S: HttpSend> BaseTable for RemoteTable<S> {
         // Make request to list the indices
         let mut request = self
             .client
-            .post(&format!("/v1/table/{}/index/list/", self.name));
+            .post(&format!("/v1/table/{}/index/list/", self.identifier));
         let version = self.current_version().await;
         let body = serde_json::json!({ "version": version });
         request = request.json(&body);
@@ -1351,7 +1372,7 @@ impl<S: HttpSend> BaseTable for RemoteTable<S> {
     async fn index_stats(&self, index_name: &str) -> Result<Option<IndexStatistics>> {
         let mut request = self.client.post(&format!(
             "/v1/table/{}/index/{}/stats/",
-            self.name, index_name
+            self.identifier, index_name
         ));
         let version = self.current_version().await;
         let body = serde_json::json!({ "version": version });
@@ -1379,7 +1400,7 @@ impl<S: HttpSend> BaseTable for RemoteTable<S> {
     async fn drop_index(&self, index_name: &str) -> Result<()> {
         let request = self.client.post(&format!(
             "/v1/table/{}/index/{}/drop/",
-            self.name, index_name
+            self.identifier, index_name
         ));
         let (request_id, response) = self.send(request, true).await?;
         if response.status() == StatusCode::NOT_FOUND {
@@ -1407,7 +1428,9 @@ impl<S: HttpSend> BaseTable for RemoteTable<S> {
     }
 
     async fn stats(&self) -> Result<TableStatistics> {
-        let request = self.client.post(&format!("/v1/table/{}/stats/", self.name));
+        let request = self
+            .client
+            .post(&format!("/v1/table/{}/stats/", self.identifier));
         let (request_id, response) = self.send(request, true).await?;
         let response = self.check_table_response(&request_id, response).await?;
         let body = response.text().await.err_to_http(request_id.clone())?;
@@ -3082,4 +3105,174 @@ mod tests {
         });
         table
     }
+
+    #[tokio::test]
+    async fn test_table_with_namespace_identifier() {
+        // Test that a table created with namespace uses the correct identifier in API calls
+        let table = Table::new_with_handler("ns1$ns2$table1", |request| {
+            assert_eq!(request.method(), "POST");
+            // All API calls should use the full identifier in the path
+            assert_eq!(request.url().path(), "/v1/table/ns1$ns2$table1/describe/");
+
+            http::Response::builder()
+                .status(200)
+                .body(r#"{"version": 1, "schema": { "fields": [] }}"#)
+                .unwrap()
+        });
+
+        // The name() method should return just the base name, not the full identifier
+        assert_eq!(table.name(), "ns1$ns2$table1");
+
+        // API operations should work correctly
+        let version = table.version().await.unwrap();
+        assert_eq!(version, 1);
+    }
+
+    #[tokio::test]
+    async fn test_query_with_namespace() {
+        let table = Table::new_with_handler("analytics$events", |request| {
+            match request.url().path() {
+                "/v1/table/analytics$events/query/" => {
+                    assert_eq!(request.method(), "POST");
+
+                    // Return empty arrow stream
+                    let data = RecordBatch::try_new(
+                        Arc::new(Schema::new(vec![Field::new("id", DataType::Int32, false)])),
+                        vec![Arc::new(Int32Array::from(vec![1, 2, 3]))],
+                    )
+                    .unwrap();
+                    let body = write_ipc_file(&data);
+
+                    http::Response::builder()
+                        .status(200)
+                        .header("Content-Type", ARROW_FILE_CONTENT_TYPE)
+                        .body(body)
+                        .unwrap()
+                }
+                _ => {
+                    panic!("Unexpected path: {}", request.url().path());
+                }
+            }
+        });
+
+        let results = table.query().execute().await.unwrap();
+        let batches = results.try_collect::<Vec<_>>().await.unwrap();
+        assert_eq!(batches.len(), 1);
+        assert_eq!(batches[0].num_rows(), 3);
+    }
+
+    #[tokio::test]
+    async fn test_add_data_with_namespace() {
+        let data = RecordBatch::try_new(
+            Arc::new(Schema::new(vec![Field::new("a", DataType::Int32, false)])),
+            vec![Arc::new(Int32Array::from(vec![1, 2, 3]))],
+        )
+        .unwrap();
+
+        let (sender, receiver) = std::sync::mpsc::channel();
+        let table = Table::new_with_handler("prod$metrics", move |mut request| {
+            if request.url().path() == "/v1/table/prod$metrics/insert/" {
+                assert_eq!(request.method(), "POST");
+                assert_eq!(
+                    request.headers().get("Content-Type").unwrap(),
+                    ARROW_STREAM_CONTENT_TYPE
+                );
+                let mut body_out = reqwest::Body::from(Vec::new());
+                std::mem::swap(request.body_mut().as_mut().unwrap(), &mut body_out);
+                sender.send(body_out).unwrap();
+                http::Response::builder()
+                    .status(200)
+                    .body(r#"{"version": 2}"#)
+                    .unwrap()
+            } else {
+                panic!("Unexpected request path: {}", request.url().path());
+            }
+        });
+
+        let result = table
+            .add(RecordBatchIterator::new([Ok(data.clone())], data.schema()))
+            .execute()
+            .await
+            .unwrap();
+
+        assert_eq!(result.version, 2);
+
+        let body = receiver.recv().unwrap();
+        let body = collect_body(body).await;
+        let expected_body = write_ipc_stream(&data);
+        assert_eq!(&body, &expected_body);
+    }
+
+    #[tokio::test]
+    async fn test_create_index_with_namespace() {
+        let table = Table::new_with_handler("dev$users", |request| {
+            match request.url().path() {
+                "/v1/table/dev$users/create_index/" => {
+                    assert_eq!(request.method(), "POST");
+                    assert_eq!(
+                        request.headers().get("Content-Type").unwrap(),
+                        JSON_CONTENT_TYPE
+                    );
+
+                    // Verify the request body contains the column name
+                    if let Some(body) = request.body().unwrap().as_bytes() {
+                        let body = std::str::from_utf8(body).unwrap();
+                        let value: serde_json::Value = serde_json::from_str(body).unwrap();
+                        assert_eq!(value["column"], "embedding");
+                        assert_eq!(value["index_type"], "IVF_PQ");
+                    }
+
+                    http::Response::builder().status(200).body("").unwrap()
+                }
+                "/v1/table/dev$users/describe/" => {
+                    // Needed for schema check in Auto index type
+                    http::Response::builder()
+                        .status(200)
+                        .body(r#"{"version": 1, "schema": {"fields": [{"name": "embedding", "type": {"type": "list", "item": {"type": "float32"}}, "nullable": false}]}}"#)
+                        .unwrap()
+                }
+                _ => {
+                    panic!("Unexpected path: {}", request.url().path());
+                }
+            }
+        });
+
+        table
+            .create_index(&["embedding"], Index::IvfPq(IvfPqIndexBuilder::default()))
+            .execute()
+            .await
+            .unwrap();
+    }
+
+    #[tokio::test]
+    async fn test_drop_columns_with_namespace() {
+        let table = Table::new_with_handler("test$schema_ops", |request| {
+            assert_eq!(request.method(), "POST");
+            assert_eq!(
+                request.url().path(),
+                "/v1/table/test$schema_ops/drop_columns/"
+            );
+            assert_eq!(
+                request.headers().get("Content-Type").unwrap(),
+                JSON_CONTENT_TYPE
+            );
+
+            if let Some(body) = request.body().unwrap().as_bytes() {
+                let body = std::str::from_utf8(body).unwrap();
+                let value: serde_json::Value = serde_json::from_str(body).unwrap();
+                let columns = value["columns"].as_array().unwrap();
+                assert_eq!(columns.len(), 2);
+                assert_eq!(columns[0], "old_col1");
+                assert_eq!(columns[1], "old_col2");
+            }
+
+            http::Response::builder()
+                .status(200)
+                .body(r#"{"version": 5}"#)
+                .unwrap()
+        });
+
+        let result = table.drop_columns(&["old_col1", "old_col2"]).await.unwrap();
+        assert_eq!(result.version, 5);
+    }
 }

rust/lancedb/src/table.rs

@@ -32,7 +32,7 @@ use lance::index::vector::VectorIndexParams;
 use lance::io::WrappingObjectStore;
 use lance_datafusion::exec::{analyze_plan as lance_analyze_plan, execute_plan};
 use lance_datafusion::utils::StreamingWriteSource;
-use lance_index::scalar::{ScalarIndexParams, ScalarIndexType};
+use lance_index::scalar::{BuiltinIndexType, ScalarIndexParams};
 use lance_index::vector::hnsw::builder::HnswBuildParams;
 use lance_index::vector::ivf::IvfBuildParams;
 use lance_index::vector::pq::PQBuildParams;
@@ -509,6 +509,10 @@ pub trait BaseTable: std::fmt::Display + std::fmt::Debug + Send + Sync {
     fn as_any(&self) -> &dyn std::any::Any;
     /// Get the name of the table.
     fn name(&self) -> &str;
+    /// Get the namespace of the table.
+    fn namespace(&self) -> &[String];
+    /// Get the id of the table
+    fn id(&self) -> &str;
     /// Get the arrow [Schema] of the table.
     async fn schema(&self) -> Result<SchemaRef>;
     /// Count the number of rows in this table.
@@ -1774,7 +1778,9 @@ impl NativeTable {
                     );
                     Ok(Box::new(lance_idx_params))
                 } else if supported_btree_data_type(field.data_type()) {
-                    Ok(Box::new(ScalarIndexParams::new(ScalarIndexType::BTree)))
+                    Ok(Box::new(ScalarIndexParams::for_builtin(
+                        BuiltinIndexType::BTree,
+                    )))
                 } else {
                     return Err(Error::InvalidInput {
                         message: format!(
@@ -1787,15 +1793,21 @@ impl NativeTable {
             }
             Index::BTree(_) => {
                 Self::validate_index_type(field, "BTree", supported_btree_data_type)?;
-                Ok(Box::new(ScalarIndexParams::new(ScalarIndexType::BTree)))
+                Ok(Box::new(ScalarIndexParams::for_builtin(
+                    BuiltinIndexType::BTree,
+                )))
             }
             Index::Bitmap(_) => {
                 Self::validate_index_type(field, "Bitmap", supported_bitmap_data_type)?;
-                Ok(Box::new(ScalarIndexParams::new(ScalarIndexType::Bitmap)))
+                Ok(Box::new(ScalarIndexParams::for_builtin(
+                    BuiltinIndexType::Bitmap,
+                )))
             }
             Index::LabelList(_) => {
                 Self::validate_index_type(field, "LabelList", supported_label_list_data_type)?;
-                Ok(Box::new(ScalarIndexParams::new(ScalarIndexType::LabelList)))
+                Ok(Box::new(ScalarIndexParams::for_builtin(
+                    BuiltinIndexType::LabelList,
+                )))
             }
             Index::FTS(fts_opts) => {
                 Self::validate_index_type(field, "FTS", supported_fts_data_type)?;
@@ -2007,6 +2019,16 @@ impl BaseTable for NativeTable {
         self.name.as_str()
     }
 
+    fn namespace(&self) -> &[String] {
+        // Native tables don't support namespaces yet, return empty slice for root namespace
+        &[]
+    }
+
+    fn id(&self) -> &str {
+        // For native tables, id is same as name since no namespace support
+        self.name.as_str()
+    }
+
     async fn version(&self) -> Result<u64> {
         Ok(self.dataset.get().await?.version().version)
     }
@@ -3250,6 +3272,7 @@ mod tests {
         fn wrap(
             &self,
             original: Arc<dyn object_store::ObjectStore>,
+            _storage_options: Option<&std::collections::HashMap<String, String>>,
         ) -> Arc<dyn object_store::ObjectStore> {
             self.called.store(true, Ordering::Relaxed);
             original

rust/lancedb/tests/object_store_test.rs

@@ -130,7 +130,7 @@ async fn test_minio_lifecycle() -> Result<()> {
     let data = RecordBatchIterator::new(vec![Ok(data.clone())], data.schema());
     table.add(data).execute().await?;
 
-    db.drop_table("test_table").await?;
+    db.drop_table("test_table", &[]).await?;
 
     Ok(())
 }