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## Summary - Complete the SQL reference: `ATTACH DATABASE`, the `CHANGES` clause, and `dedupe()`/`duplicate_pairs()` (verified against current sophon source; these were recently renamed from `vector_dedup`/`vector_duplicate_pairs`). Fix the blob-column default-projection claim and add the previously undocumented `blob_descriptor()`. - Enrich the gated Functions draft (still `.mintignore`'d, pre-release): chained Functions over blob outputs, GPU-produced blobs, Secrets, multi-input/output binding, `code=[module]` packaging. - Upgrade the materialized-view and computed-column auto-refresh drafts with precise, verified catch-up semantics, and add the missing `ALTER MATERIALIZED VIEW` / `CREATE ... WITH(...)` sections (also gated — the automatic-refresh scheduler is still dev/staging-only). - Thread one running example (video frames → GPU extract/caption → dedup → auto-refreshing materialized view) through Functions, materialized views, and the LeRobotDataset integration guide instead of a separate tutorial. - Rename "LanceDB OSS"/"OSS" to "LanceDB Embedded"/"Embedded" throughout (52 files); activate the existing availability-comparison mechanism on `basics/offerings.mdx` for a full feature-by-feature comparison table.
161 lines
5.5 KiB
Plaintext
161 lines
5.5 KiB
Plaintext
---
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title: "Management"
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sidebarTitle: "Overview"
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description: "Create, list, and drop the objects in a catalog, from Python, TypeScript, or SQL."
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icon: folder-tree
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keywords: ["ddl", "create", "drop", "list", "catalog", "management"]
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---
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Use the SDKs or SQL to manage [catalog objects](/basics/catalog), including
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tables, namespaces and views. The tables below provide a quick reference to
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the available methods; each object's guide covers its setup and behavior.
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Some long-running operations also provide a submission method that returns a
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[job](/basics/jobs). See the operation's guide for how to track completion.
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## Management APIs {#surface}
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<Note>
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SQL is available through the Enterprise Flight SQL endpoint.
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See [SQL](/basics/sql#sql-is-remote).
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</Note>
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### Namespaces {#namespaces}
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| | Python | TypeScript | SQL |
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| --- | --- | --- | --- |
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| create | `create_namespace` | `createNamespace` | -- |
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| list | `list_namespaces` | `listNamespaces` | -- |
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| describe | `describe_namespace` | `describeNamespace` | -- |
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| exists | `namespace_exists` | -- | -- |
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| drop | `drop_namespace` | `dropNamespace` | -- |
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See [Namespaces](/management/namespace).
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### Tables {#tables}
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| | Python | TypeScript | SQL |
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| --- | --- | --- | --- |
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| create | `create_table` | `createTable` | `CREATE TABLE` |
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| create empty | `create_table(schema=)` | `createEmptyTable` | `CREATE TABLE` |
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| open | `open_table` | `openTable` | -- |
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| list | `table_names`, `list_tables` | `tableNames`, `listTables` | -- |
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| exists | `table_exists` | -- | -- |
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| rename | `rename_table` | `renameTable` | -- |
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| clone | `clone_table` | `cloneTable` | -- |
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| drop | `drop_table`, `drop_table_async` | `dropTable`, `dropTableAsync` | `DROP TABLE` |
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| drop all | `drop_all_tables` | `dropAllTables` | -- |
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See [Tables](/management/table) for creating one and shaping its schema.
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### Materialized views {#materialized-views}
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| | Python | TypeScript | SQL |
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| --- | --- | --- | --- |
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| create | `create_materialized_view` | `createMaterializedView` | `CREATE MATERIALIZED VIEW` |
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| open | `open_materialized_view` | `openMaterializedView` | -- |
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| list | `list_materialized_views` | `listMaterializedViews` | `SHOW MATERIALIZED VIEWS` |
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| refresh | `refresh` | `refresh` | `REFRESH MATERIALIZED VIEW` |
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| drop | `drop_table` | `dropTable` | `DROP TABLE` |
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<Note>
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Local `list_materialized_views` reads table schemas to find views. On
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Enterprise, it requests the server's view listing.
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</Note>
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See [Materialized views](/management/materialized-view) for creating one, and
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[Refresh a materialized view](/feature-engineering/refresh-materialized-view) for keeping
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it current.
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### Views {#views}
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| | Python | TypeScript | SQL |
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| --- | --- | --- | --- |
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| create | `create_view` | `createView` | `CREATE VIEW` |
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| list | `list_views` | `listViews` | -- |
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| drop | `drop_view`, `drop_view_async` | `dropView`, `dropViewAsync` | `DROP VIEW` |
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<Badge color="red">Enterprise</Badge> Views exist only on an Enterprise cluster that
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enables them; the SDK methods send the view's SQL query to the deployment. See
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[Views](/management/view).
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{/*
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Draft for the Functions release.
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### Functions {#functions}
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| | Python | TypeScript | SQL |
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| --- | --- | --- | --- |
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| create | `create_function`, `create_function_async` | -- | `CREATE FUNCTION` |
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| get | `get_function` | -- | -- |
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| list | `list_functions` | -- | `SHOW FUNCTIONS` |
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| drop | `drop_function` | -- | -- |
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<Badge color="red">Enterprise</Badge> A function runs on the server, and only on
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a deployment that enables functions, so there is no local form. The TypeScript
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SDK has no function methods; use Python or SQL.
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See [Functions](/management/function).
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*/}
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### Jobs {#jobs}
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| | Python | TypeScript | SQL |
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| --- | --- | --- | --- |
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| list | `list_jobs` | `listJobs` | `SHOW JOBS` |
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| open | `open_job` | `openJob` | -- |
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| cancel | `cancel_job` | `cancelJob` | -- |
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| errors | `job.events` | `job.events` | `SHOW ERRORS` |
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See [Jobs](/basics/jobs).
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### Indexes {#indexes}
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| | Python | TypeScript | SQL |
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| --- | --- | --- | --- |
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| create | `create_index`, `create_index_async` | `createIndex`, `createIndexAsync` | `CREATE INDEX` |
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| list | `list_indices` | `listIndices` | -- |
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| stats | `index_stats` | `indexStats` | -- |
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| drop | `drop_index` | `dropIndex` | `DROP INDEX` |
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<Note>
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SQL `CREATE INDEX` covers one column and takes no user-chosen name: the server
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names it. For a multi-column or named index, use the SDK.
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</Note>
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Indexes are a performance decision rather than a structural one, so they are
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covered under [Maintenance](/indexing).
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## Work within a namespace {#namespace-paths}
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Most connection-level operations take a `namespace_path` (`namespacePath`) to
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act inside a namespace rather than at the database root:
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<CodeGroup>
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```python Python icon="python"
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db.table_names(namespace_path=["prod", "events"])
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tbl = db.open_table("clicks", namespace_path=["prod", "events"])
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```
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```typescript TypeScript icon="square-js"
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await db.tableNames(["prod", "events"]);
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const tbl = await db.openTable("clicks", ["prod", "events"]);
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```
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```sql SQL
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SELECT * FROM prod.events.clicks
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```
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</CodeGroup>
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In SQL the path is written as dotted identifiers instead.
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## Delete catalog objects {#dropping}
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<Warning>
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`drop_table` removes the table and every version of it. Table
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[versioning](/management/table#versioning) does not survive the table being dropped, and
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neither `drop_database` nor `drop_all_tables` asks for confirmation.
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</Warning>
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Dropping a **view** removes only the saved query. Dropping a **materialized
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view** removes stored rows, because a materialized view is a table.
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