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  1. CLI reference
  2. cluster
  3. update-external-dictionary

yc managed-clickhouse cluster update-external-dictionary

Written by
Yandex Cloud
Updated at January 27, 2026

Update an external dictionary in a ClickHouse cluster.

Command UsageCommand Usage

Syntax:

yc managed-clickhouse cluster update-external-dictionary <CLUSTER-NAME>|<CLUSTER-ID> [Flags...] [Global Flags...]

FlagsFlags

Flag

Description

--id

string

ID of the ClickHouse cluster.

--name

string

Name of the ClickHouse cluster.

--async

Display information about the operation in progress, without waiting for the operation to complete.

--dict-name

string

Name to set for the external dictionary.

--structure-id

string

Numeric key of the column for the dictionary.

--structure-key

PROPERTY=VALUE[,PROPERTY=VALUE...]

Specifies composite keys for the dictionary.

Possible property names:

  • name: Name of the column.

  • type: Type of the data in the column.

  • null-value: Default value for an element without data (for example, an empty string).

  • expression: Expression that describes the attribute, if applicable.

  • hierarchical: Indication of hierarchy support.

  • injective: Indication of injective mapping 'id' -> 'attribute'.

--structure-attribute

PROPERTY=VALUE[,PROPERTY=VALUE...]

Description of the fields available for database queries.

Possible property names:

  • name: Name of the column.

  • type: Type of the data in the column.

  • null-value: Default value for an element without data (for example, an empty string).

  • expression: Expression that describes the attribute, if applicable.

  • hierarchical: Indication of hierarchy support.

  • injective: Indication of injective mapping 'id' -> 'attribute'.

--fixed-lifetime

int

Fixed time between dictionary updates.

--lifetime-range

PROPERTY=VALUE[,PROPERTY=VALUE...]

Range of possible time intervals between dictionary updates.

Possible property names:

  • min: Minimum time interval between dictionary updates.

  • max: Maximum time interval between dictionary updates.

--layout-type

string

Layout type for the external dictionary.

--layout-size-in-cells

int

Number of cells in the cache. Rounded up to a power of two. Applicable only for cache and complex_key_cache layout types.

--layout-allow-read-expired-keys

Allows to read expired keys. Applicable only for cache and complex_key_cache layout types.

--layout-max-update-queue-size

int

Max size of update queue. Applicable only for cache and complex_key_cache layout types.

--layout-update-queue-push-timeout-milliseconds

int

Max timeout in milliseconds for push update task into queue. Applicable only for cache and complex_key_cache layout types.

--layout-query-wait-timeout-milliseconds

int

Max wait timeout in milliseconds for update task to complete. Applicable only for cache and complex_key_cache layout types.

--layout-max-threads-for-updates

int

Max threads for cache dictionary update. Applicable only for cache and complex_key_cache layout types.

--layout-initial-array-size

int

Initial dictionary key size. Applicable only for flat layout type.

--layout-max-array-size

int

Maximum dictionary key size. Applicable only for flat layout type.

--layout-access-to-key-from-attributes

Allows to retrieve key attribute using dictGetString function. Applicable only for ip_trie layout type.

--http-source-url

string

URL of the source for the external HTTP dictionary.

--http-source-format

string

Data format for the external HTTP dictionary.

--http-source

PROPERTY=VALUE[,PROPERTY=VALUE...]

Description of the source for the external HTTP dictionary.

Possible property names:

  • url: URL of the source for the external HTTP dictionary.

  • format: Data format for the external HTTP dictionary.

--http-header

PROPERTY=VALUE[,PROPERTY=VALUE...]

Single HTTP header entry.

Possible property names:

  • name: Identifier name used for the header send on the request. (required)

  • value: Value set for a specific identifier name. (required)

--mongodb-source

PROPERTY=VALUE[,PROPERTY=VALUE...]

Description of the MongoDB source for the external dictionary.

Possible property names:

  • db: Name of the MongoDB database to use for the dictionary.

  • connection: Name of the collection in the specified database to be used as the dictionary source.

  • host: MongoDB host for the specified database

  • port: Port to use for connecting to the host.

  • user: Name of the MongoDB database user.

  • password: Password of the MongoDB database user.

  • options: MongoDB dictionary options

--clickhouse-source

PROPERTY=VALUE[,PROPERTY=VALUE...]

Description of the ClickHouse source for the external dictionary.

Possible property names:

  • db: Name of the ClickHouse database to use for the dictionary.

  • table: Name of the table in the specified database.

  • host: ClickHouse host for the specified database.

  • port: Port to use for connecting to the host.

  • user: Name of the ClickHouse database user.

  • password: Password of the ClickHouse database user.

  • where: Selection criteria for the data in the specified ClickHouse table.

  • secure: Use ssl for connection.

--mysql-source

PROPERTY=VALUE[,PROPERTY=VALUE...]

Description of the MySQL source for the external dictionary

Possible property names:

  • db: Name of the MySQL database to use for the dictionary.

  • table: Name of the table in the specified database to be used as the dictionary source.

  • port: Default port to use for connecting to a replica of the dictionary source.

  • user: Name of the default user for replicas of the dictionary source.

  • password: Password for the default user for all replicas of the dictionary source.

  • where: Selection criteria for the data in the specified MySQL table.

  • close-connection: Should the connection be closed after each request.

  • share-connection: Should a connection be shared for some requests.

--mysql-replica

PROPERTY=VALUE[,PROPERTY=VALUE...]

MySQL replica of the database to be used as the dictionary source.

Possible property names:

  • host: MySQL host for the specified replica.

  • priority: The priority of the replica that ClickHouse should take into account when connecting to the dictionary source.

  • port: Port to use for connecting to the replica.

  • user: Name of the MySQL database user.

  • password: Password of the MySQL database user.

--mysql-invalidate-query

string

Query for checking the dictionary status, to pull only updated data.

--postgresql-source

PROPERTY=VALUE[,PROPERTY=VALUE...]

Description of the PostgreSQL source for the external dictionary

Possible property names:

  • db: Name of the Postgresql database to use for the dictionary.

  • table: Name of the table in the specified database to be used as the dictionary source.

  • port: Default port to use for connecting to a replica of the dictionary source.

  • user: Name of the default user for replicas of the dictionary source.

  • password: Password for the default user for all replicas of the dictionary source.

  • ssl-mode: SSL mode. Values: 'disable', 'allow', 'prefer', 'verify-ca', 'verify-full'

--postgresql-source-hosts

value[,value]

Replica hosts names.

--postgresql-invalidate-query

string

Query for checking the dictionary status, to pull only updated data.

Global FlagsGlobal Flags

Flag

Description

--profile

string

Set the custom configuration file.

--debug

Debug logging.

--debug-grpc

Debug gRPC logging. Very verbose, used for debugging connection problems.

--no-user-output

Disable printing user intended output to stderr.

--retry

int

Enable gRPC retries. By default, retries are enabled with maximum 5 attempts.
Pass 0 to disable retries. Pass any negative value for infinite retries.
Even infinite retries are capped with 2 minutes timeout.

--cloud-id

string

Set the ID of the cloud to use.

--folder-id

string

Set the ID of the folder to use.

--folder-name

string

Set the name of the folder to use (will be resolved to id).

--endpoint

string

Set the Cloud API endpoint (host:port).

--token

string

Set the OAuth token to use.

--impersonate-service-account-id

string

Set the ID of the service account to impersonate.

--no-browser

Disable opening browser for authentication.

--format

string

Set the output format: text (default), yaml, json, json-rest.

--jq

string

Query to select values from the response using jq syntax

-h, --help

Display help for the command.

  • Updating a dictionary

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