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lancedb/docs/src/js/classes/Catalog.md
T
Colin Patrick McCabe d864e7198f feat!: list_databases returns an iterator (#4442)
CatalogConnection.list_databases should return an iterator so that users
don't have to manually re-implement pagination. For those who do want
more control over pagination, add num_page_results and page_token to the
Iterator object, and also allow the iterator object to be created at a
specific page token.
2026-10-05 19:41:53 -07:00

1.7 KiB

@lancedb/lancedb • Docs


@lancedb/lancedb / Catalog

Class: Catalog

A remote catalog manages databases through the server's root namespace.

Accessors

uri

get uri(): string

The root namespace endpoint.

Returns

string

Methods

connectDatabase()

connectDatabase(name): Promise<Connection>

Connect to an existing database by its logical name.

Parameters

  • name: string

Returns

Promise<Connection>


createDatabase()

createDatabase(name, options): Promise<Connection>

Create a database, or open an existing database when existOk is true.

Parameters

  • name: string

  • options = {}

  • options.existOk?: boolean

Returns

Promise<Connection>


dropDatabase()

dropDatabase(name, options): Promise<void>

Drop an empty database. The server rejects nonempty databases.

Parameters

  • name: string

  • options = {}

  • options.ignoreMissing?: boolean

Returns

Promise<void>


listDatabases()

listDatabases(options): DatabaseNames

Iterate lazily over all database names using for await...of. pageToken resumes from a saved token; omitted starts at the beginning. pageLimit limits each REST response, not the total; omitted uses the server default. Request errors are raised during iteration and terminate the iterator.

Parameters

  • options = {}

  • options.pageLimit?: number

  • options.pageToken?: string

Returns

DatabaseNames

Example

for await (const name of catalog.listDatabases({ pageLimit: 20 })) {
  console.log(name);
}