Airbyte to ClickHouse

Synchronize data from over 350+ sources to Propel’s Serverless ClickHouse.

Get started with Airbyte

Step-by-step instructions to connect any Airbyte source to Propel.

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Features

Data Pools created with the Airbyte destination are Webhook Data Pools that support the following features:

Feature name	Supported	Notes
Syncs inserts, updates, and deletes	✅	Propel collects inserts, updates, and deletes sent from Airbyte.
Re-sync	✅	You can trigger a resync in Airbyte.
Configurable sync interval	✅	You can configure sync interval in Airbyte.
Sync Pausing / Resuming	✅	You can pause / resume syncs in Airbyte.
Sync mode: Full refresh - Overwrite	✅	Supports the Full refresh - Overwrite Airbyte sync mode.
Sync mode: Full refresh - Append	✅	Supports the Full refresh - Append Airbyte sync mode.
Sync mode: Incremental - Append	✅	Supports the Incremental - Append Airbyte sync mode.
Sync mode: Incremental - Append + Deduped	✅	Supports the Incremental - Append + Deduped Airbyte sync mode.
Schema changes	✅	When Airbyte detects a column was added in your source table, Propel will automatically add it to the payload in the _propel_payload column. It will not add it as a column in your destination Data Pool.
Delete Job API	✅	See Delete Job API.
API configurable	✅	See API docs.
Terraform configurable	✅	See Terraform docs.

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How does the Airbyte destination work?

Propel creates a Webhook Data Pool for each Airbyte source table. Airbyte streams inserts, updates, and deletes as individual records to Propel.

Data Pools mirror the source table’s structure, with additional columns from Airbyte and Propel:

Column	Type	Description
_propel_received_at	TIMESTAMP	The timestamp when the record was received by Propel in UTC.
_propel_payload	JSON	The JSON Payload of the record.
_airbyte_raw_id	STRING	The unique ID of the record generated by Airbyte.
_airbyte_extracted_at	TIMESTAMP	The timestamp when the data was extracted from the source by Airbyte in UTC.

After connecting, Airbyte performs initial and scheduled syncs, sending data to Propel’s Webhook Data Pool API. Propel then processes this data, making it available for SQL and the Query APIs.

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Key configurations

• Default Timestamp: _airbyte_extracted_at
• Primary Key: _airbyte_raw_id
• Sort Key: Combination of primary key and default timestamp

You can modify the sort key using a Materialized View.

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Data handling

Airbyte streams capture inserts, updates, and deletes. Process these changes using a Materialized View to create a new, updated Data Pool.

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Schema changes

Source schema changes are reflected in the _propel_payload JSON, but not in the Data Pool schema after initial setup.

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Data types

The following table illustrates how we transform Airbyte data types into Propel-supported types:

Airbyte Type	Airbyte Format	Propel Type
(Not specified or Null)	-	String
String	-	String
String	Date	Date
String	DateTime (TimestampWOTZ)	String
String	DateTime	Timestamp
String	Time	String
Boolean	-	Boolean
Number	-	Double
Integer	-	Int64
Object	-	JSON
Array	-	JSON

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Transforming data

Once your data is in a Webhook Data Pool, you can use Materialized Views to:

• Flatten nested JSON into tabular form
• Flatten JSON array into individual rows
• Combine data from multiple source Data Pools through JOINs
• Calculate new derived columns from existing data
• Perform incremental aggregations
• Sort rows with a different sorting key
• Filter out unnecessary data based on conditions
• De-duplicate rows