Estuary

SQL Server CDC to Snowflake + ClickHouse in Real Time (Fan-Out Demo)

TUTORIALS9/11/2026

See how to capture SQL Server change data once and fan it out to Snowflake, ClickHouse, and other destinations without creating duplicate source pipelines.

In this DBTA roundtable webinar, Estuary demonstrates a capture-once, fan-out architecture using change data capture (CDC).

The demo starts with an existing SQL Server to Snowflake pipeline for scheduled BI workloads, then adds ClickHouse as a real-time destination using the same captured collections—without re-reading the SQL Server source.

You’ll see how Estuary handles durable collections, batch vs. real-time sync schedules, backfills, schema mapping, merge vs. delta updates, and exactly-once delivery.

⏱️ Chapters

0:00 Introduction
2:08 Capture once, fan out architecture
2:53 Why multiple destinations add complexity
3:44 How the fan-out pattern works
6:40 SQL Server to Snowflake demo
8:37 Sources, collections & destinations
10:11 Inspecting CDC records
13:59 Snowflake pipeline
15:39 Adding ClickHouse for real-time workloads
18:16 ClickHouse ingestion options
18:53 Configuring the ClickHouse connector
20:38 Real-time vs. batch sync
25:14 Publishing & initial backfill
28:59 Real-time data in ClickHouse
30:27 Fan-out architecture complete
31:09 More destinations & migration use cases
32:29 Q&A: transforms, latency & deduplication

🔑 What you'll learn

* How to capture CDC data once and serve multiple destinations
* How Snowflake and ClickHouse can consume the same data at different frequencies
* How to add destinations without re-reading the source database
* How Estuary handles backfills, CDC updates, and exactly-once delivery

🔗 Try Estuary free: https://dashboard.estuary.dev/register
📚 Docs: https://docs.estuary.dev

#ChangeDataCapture #ClickHouse #Snowflake #DataEngineering #RealTimeData

More videos

Estuary logo on light background

Seamless Data Integration, Unlimited Potential

Discover the simplest way to connect and move your data.Get hands-on for free, or schedule a demo to see the possibilities for your team.