Clickhouse source (contrib)

Description

Clickhouse data sources are Clickhouse tables or views. These can be specified either by a table reference or a SQL query.

Disclaimer

The Clickhouse data source does not achieve full test coverage. Please do not assume complete stability.

Examples

Defining a Clickhouse source:

from feast.infra.offline_stores.contrib.clickhouse_offline_store.clickhouse_source import (
    ClickhouseSource,
)

driver_stats_source = ClickhouseSource(
    name="feast_driver_hourly_stats",
    query="SELECT * FROM feast_driver_hourly_stats",
    timestamp_field="event_timestamp",
    created_timestamp_column="created",
)

The full set of configuration options is available here.

Supported Types

Clickhouse data sources support all eight primitive types and their corresponding array types. The support for Clickhouse Decimal type is achieved by converting it to double. For a comparison against other batch data sources, please see here.